Oldest amp you still use?

While in high school/college in the 70's I was pretty prolific building kits. I did a heathkit AA1215 for the family, SCA80 for one brother, a PAT-5/stereo 80 for another, a hafler pre for another, and my DH-101 I still use as well as a stereo 120 I have but don't use and a DH-200 I still use as part of a 4-way 4 amp system. I think my brothers have all moved on. I still have my original CDP101 (1982 I think, crazy expensive) which may still work, haven't fired it up in years. I also have a amber 70 (1981) an apt-1 (1982) that I still use. My policy is if it ain't broke, use it and if it is broke, fix it.
 
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I still adore my 1972-ish Harman Kardon 330A (with 330B mods).
Still cosmetically flawless, and produces a nice smooth rich sound.
I've noticed the high reviews of some 'low-powered' amps/receivers (18-35W//ch) and the following of them by many people.

HK330A-Dual1215.jpg
 
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Technics SU-7600 with Tuner ST-7600 from around 1975 (https://audio-database.com/TechnicsPanasonic/amp/su-7600-e.html, https://audio-database.com/TechnicsPanasonic/tuner/st-7600.html)

Bought both from a speakeasy that went bust, they were completely covered with a sticky, rancid, stinking brownish gunk composed of the condensates of a billion cigarettes and farts. Dismantled and cleaned them with baking oven cleaner, industrial alcohol, dish soap and whatnot. The vinyl or whatever of the casing is still a bit sticky. Astonishingly aside from the tuning knob's string I did not have to replace a single part.
 

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So good I've two of them.

A 1970s Leak 2000 tuner/amp in my "den"...alright our front room.

For my 70s Philips 308 turntable and 70s Goodmans speakers.


Plus my70s Sharp cassette recorder/player


Plus my 70s Rock-Ola jukebox wallbox selectors.


I can also use it for the audio from the TV, plus the two Humax tuner recorders, a Virgin Tivo box, a CD/DVD player and a VHS recorder/player below it.

The other is in my "office".... alright our box bedroom..... I occasionally use the radio or play mp3 tracks on my laptop, using a cheap pair of bookshelf speakers.

Can't upload a video since YouTube got too copyright restrictive a few months ago.

P1050678.JPG



The second Leak replaced this 1974 Rotel RX 152 which still works fine. At the time I was using over-size speakers in this vintage Rock-Ola jukebox wall box. It's still working fine.


 
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Citation II is the sexiest. That's really nice.
I have fond memories of h-k 330 receivers I heard in the past. That would be nice to have playing too.

My oldie transistor amp is a ca. 1995 Hafler P1000 working as my PC speaker amp. The PC speakers are a pair of Sonus Faber Concerto, on their original stands, that I bought cheap because of somewhat rough cosmetic condition. It's a pretty fancy PC speaker setup. Can't compete for coolness factor with a Citation II, though...
 
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I am still very happily using a LEACH LOW TIM III amp built in the late 80s that feature fully regulated power supplies on 60V rails. Current limiting is removed and it uses a pair of MJ15003 and MJ15004 per channel.
Still works perfectly as a subwoofer amp driving a sealed sub using the RSS390HF. The complement is the Benchmark AHB2 which is more transparent in the upper regions.
 
I use all 4 pieces on a regular basis. The MX110z has had one valve replaced and the MC225 still has the original valves less one 12AX7. I sold another set very close, 2 years back. I've owned and NEVER touched any of them.
I'm sure they all need PS rebuilds and bumblebees replaced. A MC225, MC240, MC275 and MX110z are pictured.

I'm listening to the MC225 and a C20 not (pictured). I'm using an Thoren TD124/SME3012/Soundsmith with a Decware
Phono/Tape preamp for direct head playback. The onboard runs a Russco/Woodie/Shure and a Herron VTPH-2A is for a Thoren 2030/M-9 setup. Those Mac amps were bought by me in the 70s. 50+ years old.

On a scale from 1-10, the MC225, and the MX110z are 9.5, the 240 and 275, 9.0. They all play just fine.

I'm using a pair of Infinity RS4B that I tricked out and replaced all the out of spec parts, surrounds etc.
It is all old, just like me. The difference is that equipment works better than my equipment.

I need a trim pot on my pacemaker. LOL
 

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I am going to beat everyone: 1934.
Kit amplifier with parallel push-pull 47 output and 56 driver. All original tubes, but I had to replace interstage transformer - with historically correct one. I use this amp for playing 78 rpm records. The sound is refined and mellow.
20220627_174828.jpg
 
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