Minimalistic design for this RIAA Phono pre-amp, schematic by David Kennedy for dignified a vintage “brand new” from 1976 Sony Turntable PS-3750.
The goal was to build the power supply in the same chassis but at the end worked, the pre-amp is incredibly quiet, sound fantastically well, still need the printing and a good knob and some good foot for finish it, for now I am enjoy John Coltrane
The goal was to build the power supply in the same chassis but at the end worked, the pre-amp is incredibly quiet, sound fantastically well, still need the printing and a good knob and some good foot for finish it, for now I am enjoy John Coltrane
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Interesting and attractive build on a couple of levels.Minimalistic design for this RIAA Phono pre-amp, schematic by David Kennedy for dignified a vintage “brand new” from 1976 Sony Turntable PS-3750.
The goal was to build the power supply in the same chassis but at the end worked, the pre-amp is incredibly quiet, sound fantastically well, still need the printing and a good knob and some good foot for finish it, for now I am enjoy John Coltrane
Is there any problems with the MOSFETS being heat-sunk to wood?
I'd like to know what part you used for hooking the MOSFETS up to the circuit? The white connectors.
Thanks.
No problem with the mosfets I just move them out of the pcb for practical reason, in case one blows up are easy to replace, the white connectors are JST XH2.54mm 3 wire connector, the heat sink is not needed in this application for feed only 4 6N2P, real wood is also insulated so no problem....all the best
Thank you for the tip, just problem of space, but anyway in this case the mains does not give any problem....all the best
It sounds the same as most of the amps I build with this family of tubes (GE5,AV5) TBH. Quite a fast/transparent amp really...
They are working as triodes... 320V@60mA Pd... 2k2:6R or 3k:8R load ratio.
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