El cheapo sleeper amps....


I have an el cheapo intergrated amp non-es Sony from the late 80s-early 90s era and Im puzzled why this relatively modest amp is such a stellar performer...and the phono stage is above average as well...any other sleeper el cheapo amps that out perform their modest intentions?
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I have been enjoying the heck out of a Heathkit sa3 integrated c.1960. Cost me a whopping $160. That's less than $60 per quality watt! Old school here. Flash forward 20 years, same holds true. Little $$+ big enjoyment= Smarts!! Enjoy our giving of Thanks this day!!
Why would you be surprised your Sony sounds so good? Sony is the company that made Marantz popular with their solid state Receivers, Tuners, amplifiers and preamps in the 1970s.

There are to many sleeper amps to mention all of them.
As far as Sony making a great sounding integrated...

Even a broken clock is right twice a day.

Not doubting it sounds good, just saying.
Absolutely. Refurbished Scott, Dynaco, Eico, Heathkit, Knight, Hammond organ, etc. vintage tube amps.You don't have to turn it up to loud levels to hear full sound and decent bass. Tubes are the low cost way to get harmonics/which IMHO is the heart of music. Autospec and Cjkinpa do great jobs and I can recommend them both highly.