Otala's Silver?

[Zen Mod]

power amp
manufacturer Shin Shirasuna Electric Corp.
model Silver SA5050

dual mono (even two potted toroids) independent PCBs for each channel,with two pairs of 2SD745 and 2SB705 in each channel as outputs
predriver and driver stage (don't know,maybe is even cascode in case?-didn't checked yet) awfully hot -with 2SC2591 and 2SA111 and few little ones on little mutual heatsink,mounted on child boards,one childboard per channel
2x40 for output stage and 2x46 for driver and input child board


my guess is that this amp is from Otala's days in mentioned company;

Google didn't help to find any further info


somebody knows anything more?

[Zen Mod]

silly me

it's a Harman/Kardon HK-770 and 720 ,with DIN inputs and outputs,for German market
I'm googlin' right now-any further info or experience from someone?

[Zen Mod]

http://www.diyaudio.com/forums/searc...der=descending

[Zen Mod]

http://czsr_bac.on.neobee.net/hk770.gif

230KB pic

comments?
off course-shifting it ,for start , on some 1A Iq.......

[Manu]

Hi ZM,
I recently got two of these 770. One for me, one for a friend of mine.
We plan to investigate/tweak in near future... so I hope I can soon tell you more.
But it already looks very promising.



Manu

[Zen Mod]

Originally posted by Manu
Hi ZM,
I recently got two of these 770. One for me, one for a friend of mine.
We plan to investigate/tweak in near future... so I hope I can soon tell you more.
But it already looks very promising.



Manu

let me guess - that friend of ya can be cwayzee dutchie ?

hehe

me sent zwilling mail recently ........

[Manu]

Originally posted by Zen Mod



- that friend of ya can be cwayzee dutchie ?

Nope ...
You will never find it out....