Why does my 35 watt tube amp draw 300 watts of power


Hi,

I have a Prima Luna Prologue 1 (tube amp). Love it.

Always been curious though. It draws 300 watts of power, yet is rated at 35 watts / channel. Is it really so inefficient that it is losing 230 watts to heat?

~Jim
jimspov

Showing 1 response by whitestix

Gents,
+1 to the cats that chimed in above, they have it exactly right. I have heard several Class D amps in my system and found them all dry and lifeless, although the newer variants appear to be better sounding. I heard a pair of Channel Island Class D mono-blocks amps paired with VSA speakers and they were splendid, vastly better than the Class D amps I have tried in my system.  I am currently using a 10wpc Dennis Had SET amp with my Spatial Audio Holograms and the sound is warm and luscious, but I admit I prefer the sound of tubes.  Power consumption and my electricity bill is neither here nor there in my decision to use tube amplification as it turns out to be a pittance either way.   Tube amplification sounds the best to my ears.