PL519 Power AMP - If you know it drop me a line

Build in Horsens Denmark
Brand unknown
I got schematics for the amp

[@jmikronis7376]

Put it on a variable output isolation transformer and bring it up slowly while monitoring the plate voltage of the output tubes. Start with that. Check for excessive ripple on B+ lines.

[@HiFi-DIY]

Sold it did not have time for it. You are right about bringing it up with a variable output isolation transformer, that is what I always do.

[@bussi7859]

There is nothing to know, it’s oooold technology, it can be a one of

[@dadygee]

Phono inputs in the back: 80s-> If it was from the 70s it would have had a din-connection (round plugg with 5 pins) Does it have a pre-amp for a turntable? My guess is that is a Radio/TV store had a guy in the back building these from parts collected over time and sold in store. Probably a Macintosh clone or something. Adjustments are probably for bias because when components sometimes change so do values in the design. It probably sounds better than most transistor amplifiers. I would change take out the power supply and change the capps that looks broken. If you get it to work it probably will sound awesome! Good luck

[@HiFi-DIY]

Hey it a power amp....a RIAA/Phone Pre amp belongs in a preamp/line amp

[@tedcollins4684]

Interesting for cheap enough. Esoteric or kit from 80s?

[@rogertsang4169]

Hi, I sure it is a good amplifier, does it work?

[@HiFi-DIY]

Did not have time to power it up, I guess that the Electrolytic capacitor might have dried out.

[@rogertsang4169]

@@HiFi-DIY thanks for your message , sell to me , I really loved to fix and assembly any kind oof tubes amplifiler, like the one I build serval years ago,,,if u hav a email I can send you some photos , thanks

[@HiFi-DIY]

@@rogertsang4169 Sorry I am not selling, it will be my sons amp.

[@HiFi-DIY]

Have not tried to power it up yet

[@rogertsang4169]

Hi, did the amp still working😅? Seem not many components was burned ,!

[@HiFi-DIY]

No it looks fine, but have not powered it up, so can't say.

[@rogertsang4169]

Will you sell it?

[@bussi7859]

It’s made by an amateur, it is not a serial unit.