Mark, Many thx for your reply, a couple of clarification questions: 1) I've noticed by browsing around that there seems to be a learning that factory Bias current settings are low and there is an opportunity to increase the current (by as much as 200%!) without harming the amplifier, while enjoying superior performance. Is this true and should I try something like it with this amplifier based on your experience? 2) I assume that you have the service manual. In that case would you be kind enough to let me know the current (mA) for the 9mV setting? Again, really really appreciate your help on this, Panos.

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Mark, Many thx for your reply, a couple of clarification questions: 1) I've noticed by browsing around that there seems to be a learning that factory Bias current settings are low and there is an opportunity to increase the current (by as much as 200%!) without harming the amplifier, while enjoying superior performance. Install Microsoft Practices Spg Ajaxsupport Dll more. Is this true and should I try something like it with this amplifier based on your experience?

2) I assume that you have the service manual. In that case would you be kind enough to let me know the current (mA) for the 9mV setting? Again, really really appreciate your help on this, Panos. Click to expand.I just temporarily downloaded the manual and looked it up. Don't have the model number any more, so could you re-post with the model number?

Generally speaking, you can increase bias at least about 25 to 50% without really excessive heating - though this would not apply to some exotic or Class A designs. It's important to remember that solid state amps should not be allowed to run really hot. The First Tv Program. If you can't comfortably keep your hand in contact with the heat-sink indefinitely, it's too hot.