My first amp way way back from the 1980s. Recommendation from a friend at university - loved it. Lasted a good decade before the pots got a little crackly and needed cleaning. Soft clipping and tone controls too. Unlike some of the newer NADs (and others - yes you Creek!) you could turn up the volume control to way past 12.

Now in 2019 I'm seriously wondering whether any of my subsequent 'upgrades' Naim, Magnum, and currently Creek were actually any better... 
@CD..............I have a chance to get one for $250.00 CDN.......

I think it would be interesting to hear....

Thanks for the reply!
I owned several of them throughout my years. Should have kept at least one. What amazed me most about the design ( everything actually ), a single power transformer was used ( obviously a price decision ), and it still sounded spectacular !
I bought a 3020A more than 20 years ago to drive external speakers with my TV.  With the right speakers (many options I'm sure) it can still offer surprisingly musical performance.  Mine is stock other than replacing the speaker spring clips with miniature 5-way binding posts.