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Denon pma 790

Sounion

Sounion

Member
I have searched for a thread about this beastie, but didn't find it.

Who owns such a gear ?
Who has already made maintenance on it ?

I have succeeded to track one, but unfortunately it doesn't work.
My first surprise was to see the relays at the very rear of it - just behind the speakers connections.

The almost only source of it online I have been able to find is here.
 
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I have one. I am in love with it, and with that said I have compared it with some other really great amps. I have started to renovate it but has so far only replaced the two large caps in the power supply (33000 uf).

When I bought mine it had been standing in a wardrobe for 10 years, during that time something had gone wrong with some transistors in one of the chanels prestage. Since I´m not skilled enough to search for faults I was paying a professional to fix it.

The amplifier delivered 181 W per channel sinus at 0,1% dist. at 8 ohms and 286 W in 4 ohms when the german magazine Audio tested it when it was new.

Best regards Carl
 
Vinylcalle said:
I have one. I am in love with it, and with that said I have compared it with some other really great amps. I have started to renovate it but has so far only replaced the two large caps in the power supply (33000 uf).

When I bought mine it had been standing in a wardrobe for 10 years, during that time something had gone wrong with some transistors in one of the chanels prestage. Since I´m not skilled enough to search for faults I was paying a professional to fix it.

The amplifier delivered 181 W per channel sinus at 0,1% dist. at 8 ohms and 286 W in 4 ohms when the german magazine Audio tested it when it was new.

Best regards Carl
Click to expand...

I will try to start the renovation soon.
I have few stuffs to glue and maybe the relays to change.
Will post photos here.
 
did the renovation work out well?
I have one as well including the service manual. Fixed it, but I'm still not that impressed.
 
Hi Hobbit,

I have Denon PMA 750 with me. Its a good amplifier with plenty of power but the only thing is, I find it sound harsh after listening for a long period. Other then that there is no complains but the knobs need to be always deoxit to avoid it losing contact.
 
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