Comments on the Bow Wazoo Integrated Amp

I am using the Bow Wazoo Integrated Amp with my Sonus Faber GP Speakers and a BAT VK-D5 CD Player. It seems to be light on the power side. Comments and suggestions requested. thanks..
The Wazoo is not a powerhouse but, within its capabilities, an excellent amp. What is the efficiency of the SFs? How loud do you need it?
I will have to check on the efficiency of the SFs. For some types of music, I have to turn up the volume control very high and I get a little concerned. Would you recommend a more powerful amp? thanks......
Remember, the Wazoo is really a power amp with a potentiometer in front. There is no gain as with a separate preamp. Therefore, turning up the volume control is merely reducing the attenuation and, until there's audible overload, don't worry about the position of the knob.

OTOH, if you are still dissatisfied with the output, consider something with more than the Wazoo's 50wpc (IIRC).