Quad 44 Pre Amplifier

Quad 44 Pre Amplifier


The Quad 44 Pre Amplifier was the bigger brother of the Quad 34 Pre Amplifier and had the addition of an extra input over the Quad 34's four inputs. Ideally partnered with the Quad 405 and Quad 405-2 amplifiers although it is more than happy with any power amplifier, the Quad 44 Pre Amplifier has some nice features to it and clever electronics especially if your main source is vinyl.

The Quad 44 Pre Amplifier has three tone filters, bass, tilt and a high pass filter which allow you to maximise the music from very old or poor recordings by removing a lot of distortion. The Quad 44 Pre Amplifier also is one of the very few home audio pre amplifiers that can cope with high output professional equipment and as well as having swappable modules for disc, radio, cd and tape, Quad were also able to supply a microphone pre-amp card as well meaning this amplifier was well suited to home recording as well as studio recording.

These days people who mainly listen to CD will have dispensed with the Quad 44 Pre Amplifier because the sound quality can be bettered with more modern equipment. Some people have had success upgrading the capacitors in the Quad 44 Pre Amplifier with Black Gate or Elna types and replacing the Op Amps with superior Burr Brown types. No matter the Quad 44 Pre Amplifier is still a popular piece of equipment and given its value second hand is worth considering if you have a lot of old recordings in your collection.

Quad 44 Pre Amplifier Specification
Line Source Frequency Response : 30 Hz - 20 kHz (+/- 1db)
Disc RIAA Frequency Response : 30 Hz - 20 kHz (+/- 0.5db)
Distortion: < 0.05%
Input Impedence: Variable according to modules (Radio & Tape typically 100mV)
Interchannel Balance: +/- 0.5 db
Crosstalk: > 70db
Power consumption: 7 Watts
Mains voltage : 110-120V or 220-240V (interchangeable on PCB)
Dimensions (WxDxH) : 321 x 103 x 207 (mm)
Weight: 4 kg

This entry was posted on Saturday April 29th, 2006 at 7:30 PM and is filed under Amplifiers. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response.

33 Responses to Quad 44 Pre Amplifier

Chin Says:
March 1st, 2007 at 6:10 AM

My name is CHIN from Malaysia.Like to buy 2nd hand quad 34 or 44 preamp in Malaysia.Pls help

Nigel from beds Says:
November 21st, 2007 at 9:53 AM

Any ideas how many were produced of the 44?

Hi-fi insight Says:
November 21st, 2007 at 10:56 AM

About 40,000 units were manufactured between 1979 and 1989.

Ton van es Says:
December 18th, 2007 at 10:37 AM

I just replaced my Quad 33 control unit by a used Quad 44. Like the Quad 33, this Quad 44 lacks a CD input as well. I've noticed that some Quad 44 control units has a cd input. How can I manage to have this too?

Hi-fi insight Says:
December 18th, 2007 at 11:16 AM


I am no expert on the Quad 44, but I assume you will have an AUX input on your pre-amp that should work fine as a CD input. A quick search on Google and you will find details of how to convert the RADIO input to CD by swapping a couple of resistors to adjust the sensitivity.

I would imagine Quad just re-labelled the AUX as CD on later models. Perhaps someone else could confirm this.

James lally Says:
February 10th, 2008 at 9:01 AM

I have a Quad 44 pre amp and 405.2 power amp. The inputs on the preamp are through remaovable circuit boards. All you need is a screwdriver and the boards can be very easily removed and replaced, as stated in the instruction manual. When I first had a cd player, I contacted Quad and bought an CD board for my preamp which I installed instead of the aux which I found unsatisfactory for my cd player, the job took just minutes. It is possible to use the radio input but I strongly suggest that you contact Quad and buy the proper board and you will have a pre amp that performs magnificently with you cd player. Good luck with it, I hope that you will be as satisfied as I have been.

James lally Says:
February 10th, 2008 at 9:17 AM

A further suggestion. It is worth while every 2-3 years to remove the input boards and then simply reinstall them. This removes any oxide that may have formed from the connector strips and gives a nice clean connection. It also means that you have to remove and refit your connector leads. The first time I did this, the improvement in the quality of sound was considerable. With modern amplifiers, the connections are usually gold plated to avoid any oxides forming but the Quad was made before this innovation. Consider you connector leads too and investigate up to date high quality replacements, this is a cheap upgrade which can make a world of difference. Good luck and good listening.

Avelino.pires Says:
February 25th, 2008 at 3:16 PM

I have a problem on my pre Quad 44 ,the chanels are`nt balanced what i can do?


Best Regards

Avelino Pires

James lally Says:
February 27th, 2008 at 10:07 AM

What checks have you made so far? Is it out of balance with all inputs?

Avelino.pires Says:
February 28th, 2008 at 11:02 AM

Yes,with all imputs.The right chanel is fair than left,and sometimes existe a noise into both chanels.Already change imputs and problem presists.

Best Regards

Avelino Pires

James lally Says:
February 28th, 2008 at 9:30 PM

Try another pre-amp, or power amp to determine which of the two units is giving you the problem. Check that your speaker lead connections are ok first, make sure that there is a good, clean connection.

Good luck

Doug Says:
August 22nd, 2008 at 2:01 PM

Dump the Quad to play CD's? Who write this rubbish. After nearly 25 years my 44-2 is stil peforming perfectly. Multiple tests conducted still show how poor CD sounds compaired with vinyl with a state of the art cartridge and turntable.

I do not own a CD player and never will until my Analogue hearing devices (ears) degrade to the point that sampled digitising sounds acceptable.

I would like to know what this "more modern equipment" actually is. Did it get a n award for technological cleverness like the 405? Or is as usual the "audiophile" style of "dynamics", scintillating treble, blah, blah. MAde for pennies and costs £10000's. Oh well, a fool and his money are soon parted.

Hi-fi-insight Says:
August 29th, 2008 at 4:05 PM


Sorry - just not really a fan of pre-amps unless they are passive - personal preference I guess.

Steve Says:
November 4th, 2008 at 2:23 PM

I have to agree with Doug, twenty plus years and not a single problem.

James Says:
November 5th, 2008 at 9:04 PM

My Quad 44 has a cd card in it, I have no problems at all playing cd's -- which I have to as part of my work. However, my LP's played on a Linn Sondek --- need I say more?

John s Says:
April 20th, 2009 at 8:06 PM

I've had a 44 for years and love it. But lately it has developed what sounds exactly like turntable rumble on the disc input. Except it's there even when the turntable is disconnected. And it's getting worse. Before I throw myself into the ungrateful and costly arms of the repair guys (who will tell me they can't get the parts), any ideas?

James Says:
May 25th, 2009 at 8:35 AM

The first step is to check your earth connection from your turntable to the preamp. There are specialist repair men that love Quad equipment and wont rip you off. If you take it to a shop on your local High street that is not a Quad specialist, be it on your own head!

Shane Says:
August 28th, 2009 at 8:16 PM

What year were the very last Quad 44 preamps made in? Was it somewere like 1993? And what was the retail price of the very late Quad 44?

Smokey joe Says:
August 24th, 2010 at 12:23 AM

What a cool piece of kit. I remember buying one in 1980.


Albert Says:
October 19th, 2010 at 7:56 PM

I've had my 44 since 86, and its been great but about 7 years I was having problems with one side. The sound would not come out of the speaker until I cranked it up really loud and then it would come through. I could then lower the volume. Needless to say this was not good on the speakers . I had the unit repaired locally and it was ok for a while but the same issue has happened again.No sound out of one side just a very quite hum. any ideas of what the problem could be and how to fix it?

Peter b Says:
December 14th, 2010 at 11:28 AM

A question: [currenlty using a Shearne Audio Phase 2 Integrated amp (with Marrantz CD63E CD - my only source), through Dynaudio Audience 10 speakers]; my widowed mother in law has offered me her husbands Quad 44/405 Pre/power - reading the above posts I'm not sure if it will be compatible with my CD player, and if it will give a better sound. All advice appreciated. Thanks.

Peter j Says:
January 3rd, 2011 at 3:36 PM

Pls help I have a 405 and a 44. just plugged it in but for some reason was previously left on.
slight pop at plug end, fuse still intact. power amp comes on but no 44? any ideas as to what it could be

Jim zimmerman Says:
January 25th, 2011 at 11:16 PM

Regarding the CD question, I have been running a CD player through the tape 2 input on my 44/405 for well over 20 years and it still sounds great.

Maud Says:
February 8th, 2011 at 7:27 PM

Hi guys,

I got a QUAD 44 and QUAD 405 Amplifier.
I sing, I am just learning playing guitar and I was fine with it, until...I got a buzzing from the left speaker, it then cut off and now I can only hear a really feeble sound!
Anybody has an idea of what I could do? It would be really helpful. Thanks

I too played my CDs on tape 2

Keeratikul Says:
May 8th, 2011 at 12:17 AM

I own quad 44 too. I have the same problem as the above guy. I can not balance the sound between left and right channel. It seems like the balance unit worn out. What should I do to that ? Can quad supply that unit ?

Huat lim Says:
June 8th, 2011 at 8:22 PM

I have all then tuners the amplifier and the preamplifier ready for sale but with some minor rust and soiling to back panel.

Please contact me, selling cheap.

Frits Says:
July 29th, 2011 at 3:12 PM

Hey 44 do have a problem with dry joints on the mother board go over them with a fine solding

Jan Says:
January 3rd, 2012 at 12:57 AM

Hey guys... stop worrying about your Quad kit not working exactly right. Call the guys at the Huntingdon quad service site. Flat rate for a full 44, 34, 405 (-2) service is £48 !!!!!!!! plus the cost of any part over £2.00 (or something like that). I sent in my 44 with several faults. All fixed, all new caps and new dill switches plus power supply repaired..... £95 including return postage. No other company will give you this service, enthusiasm and feel good factor about real HiFi! Oh BTW, my 44 sounds amazing now!

Krik Says:
May 6th, 2013 at 11:20 PM

Hey Chin, I have a Quad 44. email me at kirkbrasier@gmail.com

I'll take BO

Chan bae Says:
November 14th, 2013 at 11:42 AM

I have a 44(M12436) and 405. Left side volume is very weak than right side. Speakers and a CD and Sources are OK.
I switched left side board and right side in 405.
It happened same problem. It means 405 is OK.
I replaced all op-amp and condensers. After replace them, balance of volume was good, but one month later the problem happened.
Please help me.

Andrew wilson Says:
January 8th, 2014 at 3:04 PM

I got my quad 44 serviced by quad u.k last december,and when i got it back it sounded better than ever.I;m using it thru the quad22l2 speakers and of course a 405 power.Music heaven.Andrew.

Jan z Says:
May 10th, 2015 at 12:35 AM

Yup - agreed, the boys at Quad in Huntingdon are true legends! I sent my 44 to them 5 years ago for service. The replaced all caps as well as the DIL switches on the input modules. Cost was £95 and it sounds like never before! I can also recommend Net Audio. I have been running a pair of issue 6 boards - modified by them to issue 7 with Burr Brown opa134 op amps - for about 6 years after one of my issue 7 boards died - tranny failure. I will get my issue 7 boards sorted by them with opa627 and install their dual mono psu board

Bernard harris Says:
September 18th, 2016 at 12:12 AM

Previous to 2014, I had Cyrus equipment. Whilst the sound was good and clean, to me after a while, the sound appeared 'cold and uninviting'. I found a service engineer on-line, and that was Rob Beales of Amplabs, phoned him up, and told him of my problem. He took 'time out' to talk to me about my audio problems. He recommended me to get a late grey Quad 44 Pre-amp, with a 7-step tilt control, as the later ones were of a better specification. He also recommended that I get a late grey Quad 405-2, as that also had a better specification that the MkI's had. It took me months of searching to find a pair in good condition. I eventually found a mint condition grey Quad 44, and it was also reflected in the price, at £399.00. This was the best of any that I had seen, although there was an annoying scratch on the front panel, which I decided to have re-sprayed at a professional paint-sprayers factory, later. After looking at more than 20 different Quad 405-2's, I was offered a mint condition grey one at £395.00, which after that I looked at it, I decided to purchase it. At the same time, I was offered a Quad FM4 grey matching tuner in excellent condition, for £125.00. I delivered all of these to Amplabs in Worcester for servicing and checking. As they are very busy servicing Quad equipment, I had to wait, 7 to 8 weeks, before I got them back. Although I still had my Cyrus equipment, I was using that in the interim period that I was waiting for my Quad equipment to be returned. There were several upgraded modifications that needed doing on the three of them, replacing old capacitors, upgrading them to better and newer tolerances, etc.etc. The tuner input module needed to be changed to a more acceptable input level to match the Quad FM Tuner, as the specification was out of tolerance. All of this was done, and eventually all three were returned to me. I then dismantled the Cyrus equipment and installed the refurbished Quad items in place, wired it all up, got out a few good cd's to play to test my 'new' toys. I had also managed to purchase a Quad 67 CD player to go with the Quad system, costing £450.00. (RRP £800), which didn't need servicing. Switched on, and waited 30 minutes for it all to warm up. Put on my no. 1 test cd...................and...WOW! What an amazing sound, very warm and detailed, through my Castle Howard SIII speakers. Tried the FM tuner on Classic FM..................brilliant sound (Don't have DAB, and I just hate the quality, compared to FM). Switched on my Revox B77, played a tape through it...................amazing quality. Amplabs were very slow in getting my equipment back to me, but given the fact that all customers equipment had to take their turn in the queue, the same as me, the attention to detail and the quality of the servicing, cannot be faulted. I recommend this company for all Quad equipment, unreservedly.

Bernard Harris
London and Tamworth, Staffs.

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