I bought a used 32 about two weeks ago. I left mine in
stand-by and it runs warm but not hot. I keep the two units
side by side on the same shelf and there's proper ventilation.
I think that the whine is a clear symptom that something is
going wrong. I own a ML-36S DAC, a ML-331 power amp and a
ML-31.5 transport too and I've noticed that the 36S and 32
reach about the same temperature while in stand-by. The 31.5
is not warm at all and the 331 is significantly less warm
than the 36S and 32 (surely because it's designed to have
great heat dissipation).
stand-by and it runs warm but not hot. I keep the two units
side by side on the same shelf and there's proper ventilation.
I think that the whine is a clear symptom that something is
going wrong. I own a ML-36S DAC, a ML-331 power amp and a
ML-31.5 transport too and I've noticed that the 36S and 32
reach about the same temperature while in stand-by. The 31.5
is not warm at all and the 331 is significantly less warm
than the 36S and 32 (surely because it's designed to have
great heat dissipation).