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Quad 34

4 Input Pre Amplifier (1984-90)

Features tilt control and switchable filters

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Quad 34


The Quad 34 provides the serious music listener with everything necessary for the full enjoyment of music from radio, disc, tape and compact disc and continues a process of evolution which began more than thirty years ago with the original Quad control unit.

Inputs are selected by pushbutton controlled solid state switches and all inputs are fully isolated so that one can switch from one to the other without turning down the volume control or switching off unwanted sources.

Filters, selected by pushbutton, provide optimum characteristics to remove distortions inherent in the record playing system and leave more of the music.

The Tilt control changes the programme balance to compensate for the difference between the reverberation of the actual listening room and the recording engineers concepts.

It is a highly sophisticated eight pole filter that is smooth in operation with no abrupt changes of response and no unwanted colouration.

The Bass control fulfils one of two functions; as an equaliser for use with small loudspeakers in the lift mode when it provides smooth progressive bass boost to compensate for the low frequency roll-off of small enclosures, and as correction for low frequency exaggeration due to floor or corner placement, in the step mode.

In short, the Quad 34 provides correct input matching and compensation for programme and room effects with excellent ergonomics, everything necessary to obtain enjoyment with the widest possible variety of programme.


Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.05%

Input sensitivity: 3mV (MM), 100mV (line)

Signal to noise ratio: 75dB (MM), 88dB (line)

Output: 100mV (line), 0.5V (Pre out)

Dimensions: 321 x 64 x 207mm

Weight: 3.2kg


instruction/owners manual   English -

flyer   English -

schematics   English -

iss 2 schematics   English - cat59

service data   English - Ivy Caudieus

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Reviewed Feb 21st, 2015 by desertdog

Smaller brother of 44 still outdoes many modern upmarket preamps. Good for vinyl.



The bussiness

I wanted a Quad amp from the beginning of my interest in hifi, I've had these 34/306's for over twenty years and I am as impressed with them today, as when I first opened the boxes and set them going. Not the most powerful of power amps the 306, but hey! big enough to upset neighbors in the next block!! 60 to 70 watts BCD will have the DTI in full confiscate mode!! (take note) and it doesn't even sound loud! It's so clean and unstressed. Mine drives a pair of Mission's 782's floor standing speakers, not my favorites, the Quads not keen on them in this room either, bass makes them honk a bit, room acoustics! NOT the Quads fault.

The business continues.


Well the Missions had to go! Replaced them with a pair of Warfdale XP2's, bass is not so pronounced, but goes deeper. Room induced honking is reduced too, as the now quieter fundamental frequency of it has diminished. I also have aquired a pair of Technics SB-CS50's from a budget system, surprisingly the Quad quite likes them and sounds very civilised with a crisp clear top end that isn't `bright'. Very smooth bass that has enough omph not to need any emphasis. The Quad system now has a `sister' amp, a Marantz K1 Signature PM6010 OSE This is a convenient addition to my system as it has two rec/playback switch/socket systems to the Quads one. This enables the Quad to sit with the mini-disc recorder and the Marantz to handle the Nak cassette 2 and Phillips CD recorder.

This website is not affiliated with or sponsored by Quad. To purchase 34 spares or accessories, please contact the company via their website or visit an authorised retailer.