Matt:

You didn't provide enough information for someone to give you an
informed answer. How big is your listening room? What types of music
do you generally listen to and at what volumes? What is the power
delivered by your current amplifier? What is the efficiency rating of
your speakers?

Usually, in my experience, a tube amp rated at 40 wpc will appear to
deliver more power than an equally rated solid state amp.

Cheers,

Jack

Matt Zach wrote:

I am looking at my first tube amp. It delivers 40 wpc class A. I own an
inefficient pair of A/D/S 810 speakers.
Will I have problems with this amp driving these speakers ?
Thanks,
Matt