Tubes Asylum

• Re: Is 7591A Are they the real deal? Uncle Ned 16:07:24 01/19/01 (0)
  In Reply to: Re: Is 7591A Are they the real deal? posted by johns02 on January 19, 2001 at 15:15:28:

  No, you're thinking of the old Sovtek 7591-XYZ, which was
  just a rewired Sovtek 5881, and did need a circuit change
  to replace a regular 7591A (needed about twice the bias voltage
  for the same plate current).

  The new Electro-Harmonix 7591A plugs in and biases up just like
  a 7591A is supposed to, the only thing it's got in common with
  a Sovtek 5881 is the bulb.

  
  

  • Triode Electronics

  
  

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