hifi engine

Manual Library / NAD

NAD 3020

Stereo Integrated Amplifier (1980-88)

add a review (8 reviews)

NAD 3020


The NAD 3020 can be used as the heart of an elaborate audiophile sound system.

For example, the pre-amp out jacks may be connected via a stereo patch cord to any high quality separate power amplifier.

To use a separate high power amplifier for your main stereo speakers while continuing to use the nad 3020'S inbuilt power amp for headphones or extension speakers, simply install Y adaptors to split the signal from the pre-amp out jacks.

The pre-amp stage is capable of driving several power amplifiers in parallel, or the long signal cables required to connect to power amplifiers located near the speakers, or to powered speakers.


  • Power output: 20 watts per channel into 8Ω (stereo)

    Frequency response: 10Hz to 70kHz

    Total harmonic distortion: 0.02%

    Damping factor: 55

    Input sensitivity: 2.5mV (MM), 150mV (line)

    Signal to noise ratio: 75dB (MM), 110dB (line)

    Dimensions: 420 x 96 x 240mm

    Weight: 5.26kg

  • Power output: 25 watts per channel into 8Ω (stereo)

    Frequency response: 10Hz to 70kHz

    Total harmonic distortion: 0.02%

    Input sensitivity: 0.18mV (MC), 2.7mV (MM), 180mV (line)

    Signal to noise ratio: 73dB (MC), 75dB (MM), 104dB (line)

    Dimensions: 96 x 420 x 240mm

    Weight: 5.26kg

  • Power output: 20 watts per channel into 8Ω (stereo)

    Frequency response: 6Hz to 80kHz

    Total harmonic distortion: 0.03%

    Damping factor: 40

    Input sensitivity: 2.4mV (MM), 150mV (line)

    Signal to noise ratio: 75dB (MM), 100dB (line)

    Dimensions: 80 x 420 x 250mm

    Weight: 5kg

    Price: GBP £149 (1991)


Related Catalogues

Product Highlights

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.


 Login or register to post reviews

Reviewed Oct 22nd, 2018 by viv1972

Iconic piece of audio history,sheer brilliance for the price. I love mine, have all the variants(series 20, B , I )

Reviewed Apr 26th, 2018 by novy07

Very surprising amp or pre amp for the price

Reviewed May 06th, 2017 by Kristian Löveborg

Very nice sound, great for biamp

Reviewed May 11th, 2016 by fuse

You know this little unit has something special when even the folks who own $12,000 amplifiers either have a 3020 - or want one.
I love this amp. I am currently using it as a preamp, and as the power amp for my LINN Sara tweeters, bi-amped with a Nikko Alpha II for the woofers. What a great system.
If you are looking for an inexpensive system that stands up to the expensive gear, and would like it to have enough options for various upgrades, this is your amp. GO NAD!

Reviewed Mar 18th, 2015 by RolandTR505

This isn't a bad amp but I think it is a bit overrated. It was very great value for the money when it arrived, but in my opinion it's not brilliant that some might want to acclaim. For some reason this amp has a nostalgic aura around it which - I think - blurres the ability to be objective. My 3020 B did a good job with bookshelf speakers but was a bit harsch in the treble region. For me it was an average amp.

Reviewed Mar 14th, 2014 by almarg4748

Punchy and accurate sound. Immensely reliable; mine is nearly 40 years old and feeding equally old KLH speakers, I haven't heard a better system since! Because of it's discrete power stages and toroidial transformers it has instantaneous response to dramatic music whilst staying crystal clear. Despite being designed for vinyl it is far more powerful than you would expect even being forced to contend with the massive increase of headroom required by modern day CDs. Can drive separate amps as a pre-amp as well and has tape/tuner/disc/aux inputs and a wire wound volume control. All in all a little miracle despite being a blast from the past.

Reviewed Jul 09th, 2012 by Stefano Sbravati

The best sound money can buy

Reviewed Jun 07th, 2012 by ELBEBE1000

Excellent amp. I got one 2 months ago and works flashless. My Rega RP1 sounds better that if I connected to a Rotel 1095 amp and 968 rotel pre- amp. If you have any chance of get one don't doubt it. My is not modified, but my friend just sent one to modification, now I am waiting to see any improvement and compare apples to apples.



re: NAD 3020

My amp has started to give quite a strong hum, initially, in the loudspeakers, when I turn it on. It fades away within three-four seconds, but is a bad sign. I believe this comes from electrolytic condensers, being more and more dried out. Maybe this is an odd problem, but it may also show that all units have - after all - a limited life span.
If anyone had the same problem, please reply to this message. Regards.

re: NAD 3020B

I have a Nad 3020B which gives out good quality sound, with which I am very satisfied . If the amplifier is covered and some one listens to it, the impression given is that you are listening to a big Hi End Amplifier. But the moment the amp is uncovered, the listener is in for a surprise.

Of late I am having a problem with my Nad 3020B. The moment I switch on the amplifier, there is a nasty Pop and a Hum that lasts for about 5 seconds, after which it fades out. Is there is Someone out there who could help me by identifying the Problem, and give me a pointer please. I shall be very grateful - With Kind Regards.

re: NAD 3020B Pops , Clicks & Hum during Switch-on

This is often caused by faulty Electrolytic Capacitors in the Startup Mute Timing Circuit. Per the Diagram on this site , from the Power Supply to the FET in the final Preout stage : C531 47uf 63v , C533 47uf 50v , C532 4.7uf 50v. Replace with good quality Nichicon, Panasonic or Nippon Chemicon - 100V types. A very similar fault is found on all early 3020's. Slightly differing circuits though.
If you suspect the on-off switch contacts starting to wear add a RC X2 Capacitor across the live contacts to reduce arcing.
All the best

re: NAD 3020B

I have a few of these amplifiers, its normally the on/off switch. you can normally get some wd40 spray into it, while powered off, keep pressing the switch on/off a few times to work it in. Its possible you may have to repeat this.

My one has been fine since. The hum issue could be related to somthing else! Dry solder joints can cause problems, i have changed all the electrolitic capacitors in my amplifier,and resolderd any dry solder joints,and any cold solder joints.


re: 3020

I first heard this amp at a friends house in 1984. I was very jealous and even at the reasonable preice of this amp , I could not afford to buy it as a student. many years have passed and I my interest in vinyl and the purest dounds has ben re-ignited . I managed to buy one second hand . It has an aux button mission and will need aservice but it sounds magnificently sweet. I have heard many systems and amps since i first heard this amp and nothing comes close if you like a musically definative but sweet and mellow sounding piece of kit.

Which version?


I am looking to get one of these amps. Is there a definitive version? I'm not sure of the differences between them.


Buttons for 3020

Does anybody know of a source of the buttons for a 3020? I'm missing one (the power switch).

re: Buttons for 3020

i had this preamp ,but a long time now it departed..in the recycle bin, but i kept the knobs all of them.do you still need it.Thanks from Greece

Buttons for 3020

Hope you found what you were looking for. I'm missing Bass button. Any ideas? Thanks.

re: Buttons for 3020

i have the BASS knob..for this..let me know if you still want it
from Greece

different model

The 3020i I own is slightly different to the 3020 shown.
3020i has no power meter and no DIN socket.
Does anyone know if the circuit is the same?

NAD 3020

The bias adjust instructions (and associated circuits) are certainly completely different.
Anyway, all the information you need for the 3020i appears to be in the manual.
Good luck

3020i manual

Oops! I hadn't downloaded the service manual so didn't notice that it included this model. The only problem with mine is the worn out switches.
Thanks for the tip.

This website is not affiliated with or sponsored by NAD. To purchase 3020/3020i spares or accessories, please contact the company via their website or visit an authorised retailer.