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RE: Valve preamplifier biasing

Agree but the plate resistance of the 300b is low (700 ohms) so a 300b (all by itself) as a gain stage would make a nice preamp. Very linear, low output impedance, just about the right amount of gain (almost all systems have way too much gain).

You are right, this is just a marketing ploy. They could have used just one 6sn7 for each channel. A gain stage followed by a cathode follower. The 300b serves no real purpose in this design.

Tre'


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  • RE: Valve preamplifier biasing - Tre' 07:54:48 02/27/21 (0)
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