Just talked to Yamaha, and they could not provide me with power in watts, however, the sales rep gave me the other specs. The S1 has a 103DB RMS gain with a 109DB gain peak power, slightly less than the L1 Compact which is 112DB RMS and 12DB peak power.

Hope this helps,

Gary cool
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)