How powerful is a Wavac MD-300B

Pani, a potentially very important point that nobody seems to have noticed yet is that the frequency response spec on the MD-300B has a lower limit of 40 Hz!!!

Assuming that spec is not in error, that would make the MD-300B a non-starter as a candidate, in my book. Besides that being an indication that the bottom octave will be severely rolled off, it is most likely also an indication that there will be adverse sonic effects at somewhat higher bass frequencies, due to phase shift issues.

In contrast, the EC-300B is spec'd to 20 Hz, and also has twice the bandwidth of the MD-300B at its upper limit (100 kHz vs. 50 kHz).

Also, I note that the EC-300B weighs nearly 60% more than the MD-300B, and appears to use completely different tube types in the input and driver stages.

All of which would seem to indicate that the sonics of the two amplifiers are likely to be considerably different.

Regards,
-- Al

I am considering their preamp, the PR-X2. On their website they specify an output impedance of 10 kohms!! Could that be a typo ?

Don't know. It would probably be best to contact Wavac directly with that question.

I've seen a few cases over the years, involving components made in countries in which English is not the native language, where the "output impedance" spec was really referring to minimum recommended load impedance. Don't know if that is the case here.

Regards,
-- Al