On Sale At scienceofcomputer.com!

Quad Preamp


Phase Linear 4000 Autocorrelation Preamplifier vintage 2 or 4 ch stereo quad #2

$245.00


Quad 303, or 33 , or 34 or 306 Amplifier and preamp repair AND update service

$140.00


Quad 44 Pre Amplifier repair AND update service

$160.00


QUAD 34 CONTROL UNIT/PREAMPLIFIER

$289.07


Quad 306, or quad 34 Amplifier and preamp repair AND update service

$120.00


Quad 34 Pre-amplifier repair AND update service

$150.00


QUAD 66 Stereo Preamp & Controller w/MASSIVE Remote & 306 Stereo Power Amplifier

$998.88


Quad PA-One Vacuum tube headphone amp/DAC/preamp

$2,000.00


Quad II 22 Pre-amp phono adaptor. Type A (New UK made)

$20.54


QUAD 33 PRE AMPLIFIER , SERVICED BY QUAD. EXCELLENT.

$256.95


Vintage 1980s Quad 34 Control Unit Pre Amp Amplifier w/ Cables & Box Serviced

$353.31


Quad 34 control pre amplifiers SN 019682 033210

$321.19


Quad 99 Preamplifier Inc Remote Control. Top Condition

$571.71


QUAD 34 PREAMPLIFIER INCLUDING PHONOSTAGE

$340.46


Quad 34 preamplifier Pre Amplifier Amp Fully Working

$353.31


Quad Artera Play CD / PreAmp with USB DSD DAC in Black

$1,278.33


Quad Artera Solus All-In-One System CD DAC Pre Amplifier Bluetooth AptX - Black

$1,920.70


QUAD 44 PREAMP

$700.00


Quad 44 Pre Amplifier Radio DIN Input Board (or Aux) 1 Mega Ohms, Level 100 mV,

$83.51


QUAD 33 Preamplifier AC100V Working Properly F/S (d253

$1,630.00


New Finished Classic QUAD 34 Clone preamplifier stereo preamp HIFI AMP

$158.00


Douk Audio Classic Preamp Stereo Preamplifier HiFi Pre-Amp Inspired by QUAD34

$199.99


New Finished Clone Classic QUAD405 Power amplifier + QUAD34 preamplifier

$376.00


New Finished Classic QUAD34 Clone Preamplifier Stereo Preamp HIFI AMP

$125.00


Quad 44 Moving Coil MC phono & Din Pre Amplifier 300 micro-volt, 470 Ohm

$122.05


QUAD 33 preamp & DaDa upgrade kit

$376.51


Pioneer QC-800 Vintage Home Audio Stereo / 4 Channel Quad Quadraphonic Preamp

$444.44


Quad 44 Pre Amplifier Radio DIN Input Board (or Aux) 1 Mega Ohms, Level 100 mV

$96.36


Vintage Quad II tube amplifier + QUAD 22 tube preamp England

$2,500.00


QUAD 44 pre-amplifier radio module - repair and update service!! RCA too !!!

$24.00


6922 Philips Preamp Vacuum Tubes JAN ECC88 Matched & Balanced Quad NOS 6DJ8 1

$355.00


Quad II 22 Pre-amp phono adaptor. Type E (New UK made)

$20.54


Quad 33 Pre-Amplifier Original Bass Control Knob Part

$26.35