Advice on Krell amplifier

Thanks vtvm. I’m the op. Never heard of DC offset until you brought it to my attention and I appreciate your help. Reading the Krell information on the amp (under circuitry), I found the following. Is it of any relevance...I don’t know enough to say:http://www.krellonline.com/stereo-amps.html

Last paragraph in the circuitry section.  

 Simply read the DC voltage present at your amplifier's output terminals under a NO SIGNAL condition.

Inputs should be shorted and not open circuit, or hooked up to a source, even if no music is playing, you don't know if any dc is coming from the source.
So best just to use input shorting rca's or xlr's, then measure the speaker terminals for any DC offset 0mv is naturally best but the amp would have to have a dc servo for this to be stable at 0mV, but < 10-20mV is fine for amp with no DC servos..

Cheers George

fast—Yes, the Krell info that you pointed me to is very pertinent; thanks.  And the DC servo correction that they cite should prove of material benefit in minimizing DC offset drift. As a consequence, I still don't comprehend why Krell doesn't publish a true spec limit for maximum DC offset, but I guess that's a separate issue. Regardless, I'd suggest making periodic measurements of DC offset to assure that it's within an acceptable margin during the first few weeks of operation. Measured results, when properly administered, provide the best evidence.

georgehifi—Yes, true. Most preamps (and signal sources) couple to the power amplifier's high impedance input through a coupling capacitor, thus blocking any DC input, but exceptions do exist. So if you don't know what your own setup does, then do assure a "no signal" test condition by selecting a shorted input.
Re. the 10-20mVdc range that you cite for acceptable DC offset…Yes, that's a tolerable offset range for a class A/B amplifier, but lots of class A power amplifiers typically exhibit greater DC offset. For example, the published spec limit for DC offset on many Pass power amps is 50mV, a value that I feel is marginal, at best. (But I applaud the fact that it's published! Of course, many buyers never read that deep.)