Self Biasing amps? MM 210 RD one hundred

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Self Biasing amps? MM 210 RD one hundred

Music Man Amps Discussion Forum » Tubes & Substitutions » Self Biasing amps? MM 210 RD one hundred

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 Alex Ives (tiss34)
Username: tiss34
Registered: 07-2013
Posted on Tuesday, July 02, 2013 - 01:12 pm:   

Hello,
Sadly one of my valves smashed in transit the other day and I am looking for replacements for the first time since owning it. I have read that some MM amps are self biasing, I know with all previous amps I have had them re-biased whenever changing the tubes, however I wanted to know
a) are the MM 210 RD One hundred amps self biasing
and
b) if so does this mean providing I replacing with the same type (matching pair) I don't need to get the amp re-biased?
Many thanks for your help!
 Mike Kaus (mm210)
Username: mm210
Registered: 05-2006
Posted on Tuesday, July 02, 2013 - 06:26 pm:   

No---amp has to be "biased" but the system is pretty forgiving. Get a set of tubes that are "matched" and follow the "bias" instructions for the SS driver amps. Mike
 Alex Ives (tiss34)
Username: tiss34
Registered: 07-2013
Posted on Wednesday, July 03, 2013 - 04:51 am:   

Ah great, thanks for the insight Mike!
Al