Scott 340a and 399 receivers

Tubes Asylum

Questions about tubes and gear that glows. FAQ

I have not needed to replace output tubes on my 340a or 399...when it comes time, is the 340 auto bias? Does one need to buy a matched pair or quad for it? I see a "dc balance" control though.

The 399 looks like there is a bias adjustment. Any advice on what/how one needs to do when replacing output tubes on either receiver would be appreciated?

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K&K Audio / Lundahl Transformers

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Topic - Scott 340a and 399 receivers - onemug 17:38:10 05/05/17 (8)

On Scott DC balance - Uncle Mike 03:11:43 05/06/17 (4)

RE: On Scott DC balance - onemug 07:30:45 05/08/17 (0)

Fixed bias - Uncle Mike 03:17:40 05/06/17 (2)

RE: Fixed bias - airtime 07:37:39 05/06/17 (1)

RE: Fixed bias - Uncle Mike 08:46:37 05/06/17 (0)

RE: Scott 340a and 399 receivers - airtime 17:48:47 05/05/17 (2)

RE: Scott 340a and 399 receivers - onemug 18:00:06 05/05/17 (1)

RE: Scott 340a and 399 receivers - airtime 18:28:17 05/05/17 (0)

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