"sufficient" is a relative word. More power is always better. There have been excellent results obtained from Pass Labs and McIntosh (solid state) as well as VAC and VTL(tubes), among many others.
There is an excellent VSA thread on Audiocircle that you can easily access from the VSA website under "contacts" and then "meet VSA customers". It is the perfect place to get additional info re: what would work best. The guys there are very helpful and have lots of VSA experience - it is an excellent place to get the guidance you seek.
There is an excellent VSA thread on Audiocircle that you can easily access from the VSA website under "contacts" and then "meet VSA customers". It is the perfect place to get additional info re: what would work best. The guys there are very helpful and have lots of VSA experience - it is an excellent place to get the guidance you seek.