Quad 77 Integrated Amplifier

Quad 77 Integrated Amplifier


The Quad 77 Integrated Amplifier was one of the first products to come off the production line at a time when Quad had just been taken over by the Verity Group who also owned Mission and Wharfedale. Launched in 1996 at the same time as the Quad 77 CD player, the Quad 77 Integrated Amplifier was also Quad's first ever integrated amplifier.

Not content with just producing a run of the mill integrated amplifier, Quad ensured the Quad 77 Integrated Amplifier was a very radical design that employed an microprocessor to control volume, balance and input switching digitally. The Quad 77 Integrated Amplifier had just 2 line inputs and a tape loop and there was no phono stage. It was also one of the first products to make use of Quad's system bus that allowed other Quad 7 series equipment to be connected to the Quad 77 Integrated Amplifier via a computer ribbon cable that linked the Quad equipment together via a serial port. This was something that angered hi-fi purists as the QUADLINK on the Quad 77 Integrated Amplifier carried audio,data, and power signals on the same cable which could never be described as audiophile.

The Quad 77 Integrated Amplifier pictured above actually came a few years later after the initial launch and features a different finish to the first batch which were a rather dull dark grey colour with a silvery blue fascia. Whether Quad thought using a carbon fibre effect fascia would "sex up" the Quads is anyone guess, but the original look was very uninspiring and very plasticky and there was no argument the version 2 look was definitely an improvement and gave the Quad 77 Integrated Amplifier more clout.

The Quad 77 Integrated Amplifier also did not take advantage of Quad's patented current dumping circuit and instead employed a very simple but stable class A/B output stage which generated about 80 watts per channel into 8 ohms.

The Quad 77 Integrated Amplifier was in production from 1996 to 1999 and won 'European Amplifier of the Year' in 1997. In total 5000 units were produced before the Quad 7 series was replaced by the Quad 9 series,

This entry was posted on Sunday January 7th, 2007 at 11:11 AM and is filed under Amplifiers. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response.

21 Responses to Quad 77 Integrated Amplifier

Calvin miranda Says:
February 3rd, 2007 at 6:40 PM

I am sending this mail from India,
I have recently brought a Wharfedale 9.6 Diamond speakers.
Now I am looking for a good integrated amplifier. I have short listed Naim Nait 5i and McIntosh 6400. Do you have an equvalent or better product.
Kindly help
Yours in Music
Calvin Miranda
Mobile : + 91 9387801742

Antony mcgoawn Says:
November 12th, 2007 at 4:41 PM

I live in the UK and i have the quad 606 power amp and 66 pre amp, hands down its the best hi fi equipment iv'e ever had, i cant see myself ever getting rid of it. i read that you can upgrade the power amp, how much does this cost and can the pre amp be upgraded also?

Afro54 Says:
January 7th, 2008 at 4:19 PM

antony - in what way are you seeking to upgrade the 606? I know that you can improve the quality of some components but, I thought that it's a pretty perfect unit, in the first place.

I wanted to ask - I have a 606 but have inadvertantly bought a Quad 77 which isn't really a pre-amp to pair with the 606. What to do? Should I get a 77, hold out for an (older) Quad 66, or does anybody have an opinion on my idea of using an Arcam 10 as a pre-amp, the Arcam 10p as a power amp, and running my 606 off the pre-amp to drive a second set of speakers.

Ruhayat Says:
March 2nd, 2008 at 3:52 PM

afro54: assuming you have the 77 integrated amp, have you tried bi-amping it with the 606? I would suggest using the 77 for tweeters and 606 for bass. I did this with my 77 integrated and a 77 power I had once and it resulted in a beefier, weightier sound.

Afro54 Says:
March 6th, 2008 at 11:11 AM

Thanks for the reply but the opportunity passed me by. I plumped for the Denon AVC A1D which is great in many respects, but has slightly obsoleted my Quad 606.

Offers please! Or any advice on how I can bring the 606 back into my setup. Sorry for asking on the 77 page but, you understand.

Ruhayat Says:
March 14th, 2008 at 10:59 AM

Buy a pair of secondhand Harbeth P3's or Dynaudio 42's for your 606 and connect them to your PC.

This would make a stonkingly good setup for video editing/sound recording, and beats the pants of any Logitech/Bose whatever PC speaker for casual music & games. And with the PC you won't need a pre-amp... just be careful to lower the PC volume BEFORE you switch on the amp.

Bottomline: if it were me, I wouldn't sell the 606. Maybe send the amp back to Quad for upgrading to 606-II specs?

Martin brown Says:
March 27th, 2008 at 4:29 PM

Has anyone experience of using a "universal" remote to operate one of these?

Steve cook Says:
March 29th, 2008 at 7:21 AM

is the 606 still for sale.
do you have the serial number.

Russel khan Says:
November 3rd, 2008 at 3:49 AM

I have a Quad 77 Integrated for sale in London if anybody is interested. Call me on 07958 557 963.

Peter Says:
November 7th, 2008 at 7:58 AM

Any thoughts on what speaker cable work well with this amp?


Hi-fi insight Says:
November 7th, 2008 at 9:31 AM


As a minimum budget around £5-6 per metre and try some QED Silver Anniversary XT available from several outlets including Richer Sounds

Simon.chan Says:
February 24th, 2009 at 5:55 PM

Quad 77 wanted. please mail me your offer.

Simon chan Says:
February 26th, 2009 at 3:42 PM

Please send me your offer of Quad 77 to:

Simon marsh Says:
November 4th, 2009 at 1:23 PM

quad 77 cd and amp for sale
email for questions

Pete Says:
December 11th, 2009 at 6:06 PM

Can anyone advise me on a good secondhand preamp to complement my Quad 707 please??


Derek heeps Says:
January 18th, 2010 at 11:51 AM

Look no further than the Quad 77 preamp - designed to match the 707 - I have one myself with a 707 and can recommend it . 77 preamp also has a phono input suitable for mc and mm cartridges besides the features of the 77 integrated amp ( less the built in power amp ) . There is also a matching 77 power amp which can be partnered for bi-amping .

Frank dobias Says:
July 23rd, 2010 at 5:35 PM

Is the Quad 77 amp & CD player still available? Price?
Is the amp 110 or 220 volt?

Afro54 Says:
September 14th, 2010 at 7:15 PM

Hey, guess who's back!

I was really surprised to read my comments, as I didn't realise I'd visited this site before!

My Quad 606 eventually set off from London, and arrived safely in Australia, to a happy new owner.

I've been into Denon's lately but, my AVR 2807 makes me want to cry!

I'm thinking of getting back into quality kit which only does what I require. If it means more boxes, then I have to consider it.

I need to play vinyl, minidisc and cd's, at some quality. I also need some option of surround sound, even if that is a separate box to the main amp.

What do people make of the Quad 77 or, at a stretch, Quad 99?

Should I get another Quad 606, or consider the Quad 77 power amp?

Finally, are there several versions of the 77? I've heard of pre, power and integrated versions, and could do with weeding some of these out.

Wilson laidlaw Says:
March 4th, 2011 at 10:51 PM

The problem with the 77 is that the quality of the fast switching IC's it uses in its coupling circuits leave a lot to be desired. This results in a higher than ideal negative feedback being applied to correct the distortion introduced by these. The op amps are of only of average quality. The end result is that the sound quality whilst inoffensive is rather remote and dull, like it was being played from behind a thick curtain. Having been a Quad user since 1962, this was the most disappointing Quad product I have bought of many. However, all is not lost. One can now get audiophile quality fast switching IC's and OPA627's in Brown Dog holders, tweaked to run in pure class A help as well. Along with some improvements to the PSU, some metal film resistors in critical areas and the final secret tweaks by Peter Hickman, the final amp is at the very least a serious competition for the Meridian and Primare integrated amps. The upgrades run out at around £300 including labour.

Chris glynn Says:
May 16th, 2011 at 11:33 AM

I'd be interested in hearing more about upgrading components in this amp. Any contact details?

Cosimo casini Says:
July 31st, 2011 at 8:25 PM

Hi! i was lookin for Quad internet site, because i have a quad 77 amplifier, and since now there were no probleam but now it's becoming to have some problem with fuse.
When i'm going to switch on from the power button, the second time, the fuse blows!!
can someone give me some help please??
thank you..

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