Diyaudio/passdiy ACP+ headphone amp, but used as a preamp. Topology of the circuit is similar to firstwatt J2. Toshiba 2sj74 jfets used on input stage, 610 mosfet outputs. Great rich sound, only reason selling is making another in more of a preamp form rather than the stock kit in this naked format. Would be well packaged to protect, including generic 3a 24v power supply (only really need less than an amp). I think some people even used this to driver 100db speakers.

Get in on that Wayne Colburn sound with an excellent discrete Opamp from Staccato. Original volume knob is included, I just swapped to a different one for aesthetic reasons. Also included is a TI RC4580 Opamp.

MAIN FEATURES:* Works with headphones with impedances of 15 ohms to 600 ohms.* Designed as a power amplifier rather than a typical headphone amplifier to be able to drive low impedance planar headphones.* Low feedback wide bandwidth discreet design.* Class A direct coupled Mosfet output stage.* Custom low noise Toroidal power transformer with a Faraday shield.* Discreet regulated power supply for audio circuits.The Pass Labs HPA-1 is a Class A headphone amp that was designed to amplify headphones with impedances of 15 ohms to 600 ohms. It can deliver full-range dynamics across the entire frequency range. The HPA-1 can even drive headphones that present difficult loads in terms of impedance, power consumption or both.In order to stand out from the crowd, Pass Labs conceptually designed the HPA-1 as a real Class-A power amplifier, not as an accessory offering only incremental performance gains. The HPA-1 cuts no corners in the circuit design and spares no necessary expense in execution. The foundation of the HPA-1s engineering is a custom, low-noise shielded toroidal power transformer feeding a discreet low noise regulated power supply for the audio circuits. The importance of the power supply is often overlooked and plays a large part in the overall performance of the amplifier.The HPA-1s amplifier circuits are low-feedback, wide-bandwidth discreet designs employing J-Fet input stages and Class A-biased direct-coupled MOSFET output stages. The HPA-1 easily drives headphones presenting loads from 15 to 600 ohms, particularly excelling on planar headphone designs. The sound is rich and detailed.The HPA-1 has a single high-quality headphone jack on the front panel, two sets of single-ended analog inputs via RCA jacks on the rear panel, and also a set of switchable Preamp line-level output jacks on the rear panel. There are no compromises with the HPA-1 when used as a stereo preamp, and it will compete against contemporary preamplifiers. The rear panel holds the power switch and fuse. Volume control is via a hefty rotary knob connected to an ALPS Potentiometer. The other front-panel controls are three pushbuttons to select inputs or to engage the Preamp output.The substantial casework is the customary and well-recognized brushed aluminum shared with other Pass Laboratories products.

MAIN FEATURES:* Works with headphones with impedances of 15 ohms to 600 ohms.* Designed as a power amplifier rather than a typical headphone amplifier to be able to drive low impedance planar headphones.* Low feedback wide bandwidth discreet design.* Class A direct coupled Mosfet output stage.* Custom low noise Toroidal power transformer with a Faraday shield.* Discreet regulated power supply for audio circuits.The Pass Labs HPA-1 is a Class A headphone amp that was designed to amplify headphones with impedances of 15 ohms to 600 ohms. It can deliver full-range dynamics across the entire frequency range. The HPA-1 can even drive headphones that present difficult loads in terms of impedance, power consumption or both.In order to stand out from the crowd, Pass Labs conceptually designed the HPA-1 as a real Class-A power amplifier, not as an accessory offering only incremental performance gains. The HPA-1 cuts no corners in the circuit design and spares no necessary expense in execution. The foundation of the HPA-1s engineering is a custom, low-noise shielded toroidal power transformer feeding a discreet low noise regulated power supply for the audio circuits. The importance of the power supply is often overlooked and plays a large part in the overall performance of the amplifier.The HPA-1s amplifier circuits are low-feedback, wide-bandwidth discreet designs employing J-Fet input stages and Class A-biased direct-coupled MOSFET output stages. The HPA-1 easily drives headphones presenting loads from 15 to 600 ohms, particularly excelling on planar headphone designs. The sound is rich and detailed.The HPA-1 has a single high-quality headphone jack on the front panel, two sets of single-ended analog inputs via RCA jacks on the rear panel, and also a set of switchable Preamp line-level output jacks on the rear panel. There are no compromises with the HPA-1 when used as a stereo preamp, and it will compete against contemporary preamplifiers. The rear panel holds the power switch and fuse. Volume control is via a hefty rotary knob connected to an ALPS Potentiometer. The other front-panel controls are three pushbuttons to select inputs or to engage the Preamp output.The substantial casework is the customary and well-recognized brushed aluminum shared with other Pass Laboratories products.

Kopfhörer In-ear Silikon Delta mit Headphone-Jack sehr gute Passform. Ein einziges mal genutzt. Entsprechend ist alles noch sehr sauber und so gut wie neu.

Sony SRS-7 Portable Passive Wired Mini Speaker System for Headphone Jack - L. ToteA

This Audio-GD Compass Headphone Amp DAC Pre-Amp is a great addition to your home audio setup. It has both analog and digital features, making it versatile for different audio sources. The black color of this unit adds a sleek look to your setup while the RCA audio outputs provide great sound quality. Made in China, this Audio-GD Compass is a must-have for music lovers who want an excellent audio experience. Condition is used as pictured and sold as is.

crisp only 10 hours usage last ten years as it was used to cut a reel to reel tape usa ship only pick up welcome nyc area

MTR PS-8. Professional Passive 8 Way Stereo Headphone splitter. Use to connect multiple Headphone sets to a single stereo Headphone feed. Ideal for educational, conference, language translation or band practice. Tested and in good working order.

Brown Ink Pen - eqw8838

Pass Labs HPA-1 headphone/pre-amplifier. I am reluctantly selling my Pass Labs headphone amplifier / preamplifier HPA-1, due to a move. I brought it new in 2019 and am the first owner. I have used it both as preamp and headphone amp. The sound is clean, clear, open, beautiful. Great opportunity at this price. Mint condition, as new. 220V. Comes with spare fuse. Original box. An amplifier to keep.

2-IN-1-OUT Mini 3.5mm Audio selector designed for customers having several audio sources and outputs? Select audio input between 1 and 2 with 1/2 switcher and get one output? Select audio output between 1 and 2 to receive one inputOne key to Mute; very useful under special conditionsPlug and Play; No power needed; Wont affect sound quality.Note: Only one audio is output at a time (you can switch between two audios)If there are any usage problems please contact the after-sales service directly, we will provide after-sales support for you.3.5mm Audio selector This is a bidirectional switcher for 3.5mm audio ports. 3.5mm audio selector designed for customers having several audio sources and outputs. Main functions: ? Select audio input between 1 and 2 with 1/2 switcher and get one output; ? Select audio output between 1 and 2 to receive one input; How to use: ? connect two audio sources (like CD player / computer) to 1/2 ports and one audio output (like speakers) to IN/OUT port; ? connect one audio source to IN/OUT port and two audio outputs to 1/2 port. Features: Easy installation and simple operation. Only need to lightly press to mute the device; very useful under special conditions. Plug and play; No power supply and other software required; Wont affect sound quality. Analog signal maximum support 2V p-p input and output. Input and output frequency range: 20Hz ~ 20KHz. Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters. Super small size; Compact and super mini size; Easy to place and suitable for your desktop and office. Note: Only three-segment headphones are supported (four-segment headphones are not supported) Package contains: 1* 3.5mm Audio Switch Switcher 1* 3.5mm Audio cable 1* User manual Note: Only one input can be played at a time.

High quality sound - SOCL in-ear headphones provide you with an immersive listening experience. With precision engineered 8. 6 mm audio drivers, combined with our unique sound signature, they provide clear, balanced sound with enhanced bass. So, no matter the genre of music, you’ll be able to clearly hear every note with high-fidelity.Comfortable ergonomic design - SOCL100 provides a comfortable fit to enhance the listening experience. The special ergo-fit sound tube provides you with a precision fit that’s perfect for continuous and long-term usage. Medical grade silicon ear caps ensure a secure fit with no skin irritation.Noise isolation - SOCL100 comes with a noise isolating fit, as it rests securely in your ears with a perfect seal that enhances bass performance.Call clarity & easy music control - a built-in mic lets you take calls on the go, while the in-line remote makes switching songs and accepting or rejecting calls simple, without ever taking your device out of your pocket.Maximum durability - every SOCL100 is rigorously tested by being pulled, bent, Stretched, and stressed for more than 150 hours to ensure the highest quality for everyday use.Whats in the box - the SOCL100 headset, three pairs of ear tips (small, medium, large), and information on our 1-year and fast, friendly customer service.connector type: 3.5mm Stereo TCL Socl100 in-ear earbuds – inspired style. Anywhere entertainment. Tcl’s Socl100 in-ear earbud stereo headphones is perfect for those with an outgoing lifestyle who always look for the perfect way to identify themselves. With vibrant color Schemes, you’ll be sure to find one that fits your personality and mood. Socl100 headphones provide an immersive listening experience that will keep you moving to the music and stepping to every beat. With precision engineered audio drivers, specially tuned by world-class acoustic engineers, they provide crystal-clear and balanced sound. So, no matter the genre of music, you’ll be able to clearly hear every note with high-fidelity. Socl100 also features an oval acoustic tube design that provides you with a comfortable and ergonomic fit for continuous and long-term usage. An in-line remote lets you stay in control. Switching songs and accepting or rejecting calls is simple, without needing to take your device out of your pocket.

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