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Pavel Dudek's super Gainclone group buy

Colour of the pcb

  • Black

    Votes: 31 37.8%

  • White

    Votes: 12 14.6%

  • Red

    Votes: 14 17.1%

  • Blue

    Votes: 13 15.9%

  • Yellow

    Votes: 3 3.7%

  • Green

    Votes: 13 15.9%
  • Total voters
    82
Jump to Latest
#712
Probably best If I start from the beginning -

Bought a cheap amp (Cambridge Audio AM1) because I blew a channel in my Onix OA21 and was quite surprised by the sound quality this little amp produced. The AM1 uses a JRC4558D chip per channel followed by a LM4766T chip for the power amp.
The bass is much tighter than the Onix, mids are similar but the Onix beats it for high frequency detail. So I'm looking for an amp with the bass of the AM1 and highs at least as good as the Onix.

I've been searching chip amp kits for the last couple of days (Myref and Modulus 86 have looked the most interesting so far) and have just come across this group buy.

Am I right in thinking this PCB has a preamp built in? That's a big plus for me if that's the case.

Is there a list of other things I'd need to finish the amp? Case, volume pot, transformer etc.
 
#715
I went with compact and all-black theme to match the board. Build complete and sounding mighty fine with some 4ohm test speakers and balanced inputs.

200VA 2x24V shielded trafo. Big surplus inlet filter. Carefully matched resistors. ~10mV DC offset. On the bench the heatsink/chip stabilized at 42C. Cased up, 50C after several hours. All seems well.

Thanks to PA and PD for the great board/design!

BK


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#718
bk856er said:
I went with compact and all-black theme to match the board. Build complete and sounding mighty fine with some 4ohm test speakers and balanced inputs.

200VA 2x24V shielded trafo. Big surplus inlet filter. Carefully matched resistors. ~10mV DC offset. On the bench the heatsink/chip stabilized at 42C. Cased up, 50C after several hours. All seems well.

Thanks to PA and PD for the great board/design!

BK
Click to expand...
Thank Upupa Epops. It's his work, not mine. Excellent looks of your amp. 5 stars.
 
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