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ARC VS60 bias

I just rec'd my new ARC VS60 amp and I think it sounds quite good out of the box. The document says the burn in period is like 600hours!

My question is the bias. The amp out of the box shows 65ma. The manual says 60ma. This is my 1st tube stereo amp so I am looking for veterans advice on where to set it. I suppose the tubes will last a bit longer at 60ma and I should use my ear to judge...
jazzgene

Showing 2 responses by cmalak

cmalak
681 posts
 
I should use my ear to judge...

Not when it comes to tube biasing. I would call ARC and reconfirm that it should be biased at 60 vs. the 65 it was shipped at. Normally, tube bias will drift with inital use but since they came set at 65 when ARC sent them before use you may want to confirm which is the right setting. Just my 2c worth.
cmalak
681 posts
 
Jazzgene...that should not happen at all. Did you call ARC? If you bought this through an authorized dealer, you should be able to get the unit replaced or fixed so that there is no hum.
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