For sale is a used Hafler DH-112 pre preamplifier. Adding this unit to your DH-101 or DH-110 will give you the capability of using low or medium output moving coil phono cartridges. It was pulled from a working DH-110 preamp. I recapped it with high quality capacitors.Please note: This unit required you to install inside your Hafler preamp. Do not buy without the proper electronics capabilities. This unit was installed in a DH-110 preamp so the muting wires have been removed. If you are planning on installing in a DH-101 preamp, let me know and I will install the 2 wires you will need.Installation instructions are in the back of the DH-110 manual. If you need DH-101 instructions I can send them to you. All sales are final. You will not get a non functioning unit. Check my feedback. US sales only Please. Shipping to Hawaii and PR is extra.

David Hafler DH-110 Stereo Preamplifer with rackmount option for professional installation. This model features include a headphone amplifier, a muting circuit to prevent downstream thumps, a mono and tone control defeat switch, a rumble filter, as well as an external processing loop. The body is well constructed and protected from outer interference through full copper coating, similar to the Harman / Kardon designs of that time period. With two tape loops and two phono stages, the amplifier offers great connectivity. Preowned in good cosmetic and working condition. Fully tested and comes with 30-day guarantee. Shown signs of previous use such as light scratches, worn-out corners, dings, dis-colored spots...See photos for more information. This vintage unit has been fully tested by a technician. Due to the nature of electronics, Serial numbers have been photographed and recorded, and tamper proof labels are used to prevent tampering or component piracy. All dials, all inputs, buttons and outputs are cleaned and tested. Sound output is crisp and strong on both headphone and line output terminals. Use U.S. AC Power Only 110-120V / 60 Hz Hafler DH-110 first introduced in 1985 No return if due to buyer mishandling or damage because of lack of proper operational knowledge - and above all we are watching out for the part swappers if anti-tamper stickers on the unit removed or broke off. Only preamp unit for sale. No audio cable. No rack-ears. No other accessories included. Expedite shipping in double boxed with layers of foam protection. Fully insured. Flat-rate of $20 shipping to anywhere in the US to residential address only. No P.O Box. _______________ Specifications Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.001% Gain: 34dB (MM), 20dB (line) Input sensitivity: 12.5mV (MM), 50mV (line) Signal to noise ratio: 87dB (MM), 90dB (line) Channel separation: 52dB (line) Output: 3V (Pre out) Semiconductors: 30 x transistors, 3 x IC, 12 x diodes, 2 x LED Dimensions: 17 x 3 x 8.5 inches Weight: 10lbs Year: 1985

This Hafler DH-110 stereo preamp is pure warm and clear sounding with the service complete on it with new caps and other parts. See inside unit pictures, With multiple audio inputs including AUX, Phono/Turntable, and Stereo L/R RCA, you can easily connect your favorite devices and enjoy crystal clear sound. The black color and analog features make it a stylish and classic choice. Made in the United States and manufactured between 1980-1989, this preamp has been recapped and serviced to ensure optimal performance. It has also been fully tested, so you can buy with confidence. Don't miss out on the chance to enhance your audio experience with this high-quality preamp.

Pr vintage Hafler Rack Mount handles for DH-110/DH-330 and other period correct audio components. They are complete and included the nuts/bolts, made in USA. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :)

Pr vintage Hafler Rack Mount handles for DH-110/DH-330 and other period correct audio components. They are complete and included the nuts/bolts, made in USA. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :)

Pr vintage Hafler Rack Mount handles for DH-110/DH-330 and other period correct audio components. They are complete and included the nuts/bolts, made in USA. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :)

Pr vintage Hafler Rack Mount handles for DH-110/DH-330 and other period correct audio components. They are complete and included the nuts/bolts, made in USA. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :)

This Hafler DH-110 stereo preamp is a perfect addition to any audiophile's collection. With its distinct black color and analog features, this unit is sure to provide high-quality sound. It has various audio inputs, including AUX, phono/turntable, and stereo RCA, and it comes with two channels. This preamp was manufactured between 1980-1989 in the United States and is a rare find for any collector. Although the shell may have a slight bend, it powers on perfectly and is ready to enhance your home audio experience. Sold as-is

This is the original assembly and operation manual for the Hafler DH-110 preamplifier. It provides comprehensive information on how to set up and use the device. The manual has writing on it and contains all the original pages. Please see all photos as they are also part of the description. The Hafler DH-110 preamplifier is a vintage piece of consumer electronics. It was manufactured to high standards and is a sought-after item for audiophiles. This manual is a must-have for anyone who owns or is planning to purchase the DH-110 preamplifier. It provides detailed instructions on how to operate the device, as well as information on its technical specifications.

Hafler DH-110 Stereo Preamplifier - Vintage Partially re-capped with high end capacitors, switches and potentiometers cleaned. A few commonly problematic components replaced. Tested.Most polarized electrolytic capacitors were out of spec and were replaced with Nichicon Audio grade quality replacements. The non-Nichicon bipolar capacitors were found to be out of spec as well and were replaced with high end Nichicon Muse capacitors. All of the nice Nichicon bipolar caps measured fine and were kept. The main filter caps were replaced. J112 FETs and LM393 comparator were replaced to eliminate any future issues that commonly occur. This preamp sounds great and will be great for any vintage equipment lover especially anyone into vinyl, as the phono preamps are great. Take a close look, at the pictures. The front isnt too bad at all, but the sides and top are definitely a bit scratched up. Will be well packed and insured. SpecificationsFrequency response: 20Hz to 20kHzTotal harmonic distortion: 0.001%Gain: 34dB (MM), 20dB (line)Input sensitivity: 12.5mV (MM), 50mV (line)Signal to noise ratio: 87dB (MM), 90dB (line)Channel separation: 52dB (line)Output: 3V (Pre out)Semiconductors: 30 x transistors, 3 x IC, 12 x diodes, 2 x LEDDimensions: 17 x 3 x 8.5 inchesWeight: 10lbs