Simply out of curiosity at the moment: What is the maximum output voltage for a thunderfunk TFB-420 ? Dont know? How about an Eden WT-300? Or... It is not unusual to have max output voltage specs for audio poweramps, however the bass amps are listed in watts. Yes, P=I^2R, P=VI , P= (V^2)/R , but why not list the actual output voltage as opposed to the calculated (at some value) power?