Tube DIY Asylum

RE: Gary Pimm's phono schematic shows one

68.83.158.206

In Reply to: RE: Gary Pimm's phono schematic shows one posted by kurt s on November 02, 2009 at 17:08:11

Kurt,

The idea of grid leak biasing the 2nd gain block of a phono preamp is intimately associated with Thorsten Lösch. The rationale for the arrangement is to ease loading of the EQ network and extend bass response.

Search the archives and you'll find a tweaked version of the "classic" RCA circuit I'm associated with. It works fine, without CCS loading the 2nd gain block. MOSFET buffering of the 2nd gain block probably helps in the stability dept., along with improving drive capability.

Eli D.

Follow Ups:

I know Thorsten liked it. He suggested it to me... - kurt s 08:57:03 11/03/09 (2)
- RE: I know Thorsten liked it. He suggested it to me... - Gary P 07:09:43 11/06/09 (1)
  - RE: I know Thorsten liked it. He suggested it to me... - kurt s 12:22:37 11/07/09 (0)

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