tube watts vs transistor watts?

199 wpc

Discussed at length in the thread archives.

The answer is 200 watts.

Because distortion from tube amps is perceived more favorably by the human ear than distortion from solid state amps, a lower power tube amp may *appear* to work as well as a higher powered solid state amp simply because the listener is not as bothered by the tube amp's early distortion as it reaches clipping.

Nevertheless, 200 watts is 200 watts, and if the speaker manufacturer recommends 200 watts, then that's what you should feed it at minimum, regardless of whether the amp is tube or solid state.

IMO.

I agree with Tvad, except some manufactures recommend power needs assuming that the 8 Ohm rated power of the amplifier will "double down" into the lower impedance that their speakers actually work in. That might require more (8 Ohm) tube Watts than ss Watts.

This is good question. Until 2 weeks ago I would have said the same as Tvad and Grinnell. But it may be more than that. I just traded my Bryston B100 rated at 100w 8ohm and 180w 4ohm for an Octave V70se rated at 70w 4ohms (can't find an 8ohm rating). Anyhow the Octave just crushes the Bryston in power and control. Not bashing Bryston for I had mine for 4 years and thought it couldn't be beat without spending a truck load of money. The demo in my home took about a whole 5 seconds to want the Octave (and that was with cold tubes). I think the caveat here is my speakers. They are Dynaudio C1's which are known to like current not necessarily watts. Rated at 85db 4ohms. Logically it makes no sense unless the power is calculated as E X I instead of I sq X R and Octave uses a lower voltage (E).

I hope Almarg chimes in on this one for he always has good technical answer.

So I'm guessing it has more to do with the speakers where tube watts may seem like more compared to solid state. I don't think that applies to all speakers, but some.