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In the Forum: Analog Playback
In the Thread: 7788 tube mic pre design
Post Subject: 7788 tube mic pre designPosted by rafaroxlm on: 2/14/2006
As you may know the 7788 is a high transconductance pentode which should in theory be able to give higher audio resolution than say 12AX7, 6072 tubes in tube mic pre designs.  On search here the 7788 was mentioned as being used as the first tube in a phono preamp design but no schematic was available.  Woild appreciate assistance from the tube Gurus here in coming up with a design for a 7788 transformer input tube mic pre design.  Have some UTC A-10, LS-10 as well as output trans available.

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