Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Vacuum Tube Preamp Mini Bluetooth Receiver Headphone Amp USB DAC APTX-HD Item description IMPORTANT NOTE: Turn ON position means Treble and Bass Control are invalid. Features Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / phone OTG Matched headphone impedance: 16-300Ω Output power of headphone jack: 268mW@16Ω Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Conversor digital analógico de la prestigiosa Audio Analogue, múltiples entradas digitales (AES/EBU, óptica, coaxial, USB) y salidas analógica balanceada y single ended. Especificaciones completas en las fotos. Perfecto estado, con su caja y mando a distancia originales. PVP 1.500€

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Vacuum Tube Preamp Mini Bluetooth Receiver Headphone Amp USB DAC APTX-HD Item description IMPORTANT NOTE: Turn ON position means Treble and Bass Control are invalid. Features Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / phone OTG Matched headphone impedance: 16-300Ω Output power of headphone jack: 268mW@16Ω Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

arious audio input: can be connect to PC directly as a high-grade USB external sound card, and can be wired to CD player, lossless audio source? and can wirelessly connect to smart phone by Bluetooth, very convenient. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Stereo Bluetooth 5.0 Preamplifier Vacuum Tube Preamp Mini USB DAC Adapter Item description Notice: 1.The vacuum tube needs 5-7 seconds to warm up. 2.Choose audio input by hand. Clockwise rotation to switch different kinds of input signal, the order is Bluetooth→USB-PC→AUX Features Various audio input: can be connect to PC directly as a high-grade USB external sound card, and can be wired to CD player, lossless audio source? and can wirelessly connect to smart phone by Bluetooth, very convenient. Excellent sound quality: using classic 6N3 tube, warm and charming tone, very balanced, clear and delicate sound, dynamically With Treble and Bass Function: users can adjust freely according to different parameters of their own speaker device to achieve ideal HiFi sound quality. High-end Material: Bluetooth 5.0 module using QCC3003 chip supporting A2DP, AVRCP, HFP, AAC, 12S and so on. 16M SPI FLASH storage chip, lossless decoding transmission with farther distance, more stable speed.Bluetooth decoding using the latest US ES9023, Hyperstream architecture and time-domain jitter cancellation technology enable jitter-free recording quality with a dynamic range of 112 decibels. USB sound card using BB PCM2704, the sound quality output is warm and the sound field is open. Parameters Audio Input: USB-PC / 3.5mm Stereo / Wireless Bluetooth 5.0 Audio Output: RCA Power Supply: DC 12V (adapter is equipped and global universal) Bluetooth Chip: QCC3003+ES9023 USB Chip: US BB PCM2704 PCM2704 Parameters Distortion: THD + N: 0.006% (RL > 10kΩ) Distortion: THD + N: 0.025% (RL = 32Ω) SNR: 99 decibels Dynamic range: 99 dB Support sampling rate: 16Bit 32k, 44.1k, 48k Dimensions: 138*116*32mm Packing List 1* HiFi Preamp 1* Power Supply 2* 6N3 Tube 1* Bluetooth Antenna 1* USB Cable Common reasons for background noise: 1. Audio cables are with poor quality. 2. Audio source. If the source itself has noise, the pre-amplifier will amplify its noise. 3. The tube is not plugged into the base correctly. Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

Product details Product Descriptions: If there is no input for 10 seconds there will be a prompt tone to remind you to go to sleep. If you play music again, there will be a prompt tone to indicate that the input is successful. Product paramstes: Chipt: 6K4+AC6926C+SA9123+MS8412+NE5532 Tube model: 6K4x2Pcs Replaceable tubes: 6J1, 6J2, GE5654, 6J3, 6J4, 6J5, 6?1?, 6AK5, etc. Support: MP3/WMA/APE/FLAC/WAV pc-usb sampling rate: 24bit96khz Optical fiber/coaxial sampling rate: 24bit 192khz Bluetooth sampling rate: 24bit 48khz pc-usb support system: XP/W7/W8/W10/MAC/Linux Total harmonic distortion: 0.07% Signal to noise ratio: ≥98db Frequency response: 20-20Khz (±1db) Treble/bass adjustment range: ±6db Speaker impedance: 3-8Ω Output power: 100W*2 4Ω load Input mode: Bluetooth / RCA/pc-usb/optical/coaxial Support equipment: mobile phones, tablets, computers, MP3, TV, etc. Output mode: passive speaker, active subwoofer Working power supply: DC18-30V Size: 115*98*54mm Package included: 1Pcs Tube T9 tube amplifier + 1Pcs US DC24V Power adapter AIYIMA T9 2.1 channel Power Amplifier Unique and amazing combination: integrated T9 amplifier with VU meter into whole in such a mini size, when enjoy HiFi music, the pointer dancing in the warm light with strong vintage feelings, dynamically decorates the audio system space.Aiyima t9 hifi bluetooth 5.0 vacuum clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise. Also with treble and bass knobs to adjust ones own preferable sound styles, presents HiFi music with rousing highs and deep lows. Strong output power and low frequency output: use amp IC TPA3221, each channel can output 100W(4Ω), match perfectly and easily to drive all 3-8Ω passive speakers, adds a low frequency output easy to connect active speakers and build 2.1 channel system, the bass effects is greatly enhanced.With multiple digital audio inputs: Bluetooth 5.0 / USB / Coaxial / Optical / stereo RCA, compatible with most audio device such as phones, computers, tablets, TVs, TV, CD players etc. The perfect combination of DAC and amplifier, very suitable for audiophiles who have various audio devices.Practical funtions to simplify use: with input selection and indicators, clearly to show the working status in real time; aluminum alloy case is specially designed, cool and unique to decorate your desktop space.

Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Vacuum Tube Preamp Mini Bluetooth Receiver Headphone Amp USB DAC APTX-HD Item description IMPORTANT NOTE: Turn ON position means Treble and Bass Control are invalid. Features Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / phone OTG Matched headphone impedance: 16-300Ω Output power of headphone jack: 268mW@16Ω Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

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