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Stereo Amplifier 3020 Series 20

Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 446219) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 446220) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 446221) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 446222) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 555730) Ampl/Mixer Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 812941) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 812942) Ampl/Mixer Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 963322) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 963323) Ampl/Mixer Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 963324) Ampl/Mixer
Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 1605156) Ampl/Mixer
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Stereo Amplifier 3020 Series 20; NAD, New Acoustic (ID = 555730) Ampl/Mixer
NAD, New Acoustic: Stereo Amplifier 3020 Series 20 [Ampl/Mixer] ID = 555730 933x268
Select picture or schematic to display from thumbnails on the right and click for download.
For model Stereo Amplifier 3020 Series 20, NAD, New Acoustic Dimension; Ontario:
Thanks for Mr. Nagy Pál.
Country:  Canada
Manufacturer / Brand:  NAD, New Acoustic Dimension; Ontario
Year: 1979–1982 ? Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) 38:
Main principle Audio-Amplification
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 117 or 220 or 240 Volt
Loudspeaker - This model requires external speaker(s).
Power out 40 W (56 W max.)
from Model: Stereo Amplifier 3020 Series 20 - NAD, New Acoustic Dimension;
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 420 x 96 x 240 mm / 16.5 x 3.8 x 9.4 inch

A 2 x 20 watt stereo hi-fi amplifier, the NAD 3020 Series 20 was the first in a series of 3020 Amplifiers which continued in production until 1993. With a high-voltage, high-current output stage enabling it to deliver twice its rated power to handle musical transients, and a 'soft clipping' circuit which gently limits the waveform voltage when the amplifier is driven beyond its rated power. It also has a sophisticated low noise near distortion free 6 transistor MM phono pre-amplifier.

With RCA input sockets for Phono (MM), Tuner and Aux, input/output RCA sockets and DIN socket for Tape, and a Soft Clipping switch (On/Off). Sockets for Pre-amp out and Normal-in connected with removable U shaped metal jumpers, and sockets for Lab-in (an alternative to the Normal-in socket with wideband frequency response). Connectors for one pair of loudspeakers and two AC outlets (not all models).

Rotary controls for Bass, Treble, Balance and Volume, push buttons for Power, input selection (Aux, Tuner, Phono, Tape), Audio Muting and Loudness. Power On pilot light and and 5 LED Power Meter indicators. Jack for headphones. Rack mount handles are an optional extra.

Designed by Björn-Erik Edvardsen.

Continuous Average Power Output into 8Ω
(Min. RMS power per channel, 20Hz - 20kHz, both channels driven
with no more than the rated distortion) ......:  > 20 watts
Rated Distortion 20Hz - 20kHz .................:  < 0.02%
Clipping Headroom at 8Ω .........................:  +1.5dB
Clipping Power at 8Ω / 4Ω / 2Ω ................:  28W (8Ω), 37W (4Ω), 42W (2Ω)
Dynamic Headroom at 8Ω ........................:  +2.9dB
Dynamic Power (Max. short term) .............:  39W (8Ω), 58W (4Ω), 72W (2Ω)
Damping Factor at 50Hz, 8Ω ....................:  > 55
Frequency Response Range .....................:  10Hz - 70kHz
Frequency Response 20-20kHz Lab Input ..:  ±0.5dB
Input Sensitivity .......................................:  2.5mV (MM), 150mV (line)

Versions/Power Requirements
117/220/240 V AC 50/60Hz internally switchable

Stereoverstärker von NAD (Toronto, Kanada). Die 3020-Serie wurde von 1979 bis 1993 gebaut (mehr als 1 Million Exemplare). Sehr guter Einstieg für Drehtische mit magnetodynamischem Element. Verstärker pro Kanal: 2 × BC546, BC549, 2 × BC556, 4 × BC559, 2 × BD139, 2N2955, 2N3055, 2N6551, 2N6554, 2 × 2SC1400. Stabilisiertes Netzteil mit BC549, BC559, BD139, BD140. Ein IC, LB1405 für led-leistungsanzeige Entwurf von Björn-Erik Edvardsen.

Made in Taiwan

See also the later versions of the NAD 3020 Stereo Amplifiers :
NAD 3020A, NAD 3020B, NAD 3020e, NAD 3020i

Net weight (2.2 lb = 1 kg) 5.3 kg / 11 lb 10.8 oz (11.674 lb)
Collectors' prices  
Source of data - - Data from my own collection
Mentioned in -- Original-techn. papers. (NAD 3020 Service Manual, NAD 3020 User Manual)
Literature/Schematics (1) Gérard Chrétien: "Le NAD 3020: un remarquable compromis", L'Audiophile, No.18, 1980, pp.49-53

Model page created by Aren van Waarde. See "Data change" for further contributors.

All listed radios etc. from NAD, New Acoustic Dimension; Ontario
Here you find 113 models, 111 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
NAD, New Acoustic: Stereo Amplifier 3020 Series 20
Threads: 1 | Posts: 11
Hits: 1080     Replies: 10
nad: first picture here showing NAD 3020i model
Bartosz Szwed

i think so first picture showing NAD 3020i model and should be crated separately model

Bernhard Nagel

After checking some pictures of ended ebay auctions, the model NAD 3020i has this printed at the face plate. So the first picture showing here belongs to a model 3020, although different lettering can be seen. Maybe it's a late version of the 3020.

However, the model 3020i should be created new.


Wolfgang Bauer

There are several different versions of this model:
3020, 3020i, 3020 Series 20 and more other.

Greetings Wolfgang.

Bartosz Szwed

So then i think model 2030 20 series should be separately, and all other models should appear separately. I think so they are diffrents not only on the front faceplate but also in schematics. If yes then even if first picture showing model 2030 shold not go toghether with model 2030 20 series ...

Bernhard Nagel


this is correct, two new models should be created. Would you do this?

  • NAD 3020i and
  • NAD 3020 Series 20 (has a 5-LED power meter at the right above the volume control)

The pictures already uploaded here can be sorted after approval of the new models.
Thanks to Wolfgang Bauer picturing these differences.

Bartosz Szwed

I will create 2030 20series as i working on that model on my nench right now....

Wolfgang Bauer

I did a little more research and found this ==> page where the whole series is documented.

3020-Series 20, 3020A, 3020B, 3020e, 3020i,

Howard Craven

The first pic on this model page is indeed a 3020i model, even though it is marked 3020. This exhibit is still on the National Museum of Scotland website where it is described as a 3020i model. It was no doubt specially produced for the Museum as it is gold in colour, the 3020 was only produced in grey or very rarely in silver.

National Museum of Scotland 3020 exhibit

I have set up a model page for the 3020i model and the pic will be moved there shortly.

Stereo Amplifier 3020i

I am in the process of creating individual model pages for all the 3020 models which include the 3020A, 3020B, 3020e and 3020i. This 3020 model page will be changed to the 3020 Series 20 which was the first 3020 model released in 1979 as all the pics uploaded to it apart from the above are of that model. The other 3020 model page for the 3020 20 Series (sic) with no uploaded pics will be merged with it and removed.

Stereo Amplifier 3020 20 series






Howard Craven

Hello again,

There are now model pages for five NAD 3020 models. Apart from this one for the 3020 Series 20 there are model pages for the NAD 3020A, NAD 3020B, NAD 3020e and NAD 3020i and the pic of the special gold coloured 3020 is now on the 3020i model page. If you have any of the later 3020 models in your collection do please upload pics of them onto the new model pages,

Regards ...... Howard



Georg Richter

Hello Howard,

the golden model in the National Museum is mentioning an other NAD address:

NAD Electronics Ltd
Aylesbury, Buckinghamshire, England, EUROPE

This shall be verified, and then added to the company page.
Maybe they know the year when they got it? 1989?

Best Regards,

Howard Craven

Hello Georg,

To confirm that address will take some time, NAD have never been forthcoming with their addresses with none appearing in their manuals, and a subsiduary company ....

NAD Sales Ltd,
Cousteau Hose,
Greycaine Road,

appearing on their brochures. They also had offices in London, Boston and Tokyo.

Regards .... Howard



NAD, New Acoustic: Stereo Amplifier 3020 Series 20
End of forum contributions about this model