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In the Forum: Melquiades Amplifier
In the Thread: Gas voltage reference 0A2 tubes.
Post Subject: Re: 5651 vs 0C2Posted by morricab on: 9/8/2005

Hi,

I have a phono stage from the Korean company Silvaweld that uses the 5651 tube in the power supply as a voltage reference.  It also is using a Russian 6C19Pi tube along with EF86 pentode as the high voltage regulator.  The rectifier is a 6w4 (I think). I am not entirely sure about the actually circuitry of the phono stage  except that the front end is a cascode configuration using a 12AY7 (or 6072a if you prefer).  The sound from this stage is IMO outstanding.  My linestage, also from Silvaweld, is using a highly unusual power supply using a combination of the EF86 and a 300B as the high voltage regulator (yep, a big power triode in the power supply)!!  The tubes in the circuit consist of 1 6922 and 2 WE417a tubes per channel in a fully balanced configuration.  The sound?  IMO its at least as good as the Lamm L2.

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