Amazing how many here bit at what is a silly and pretentious question (OK…I'm biting)…but I'll state (or re-state) the obvious: the frequency range of most well designed modern tube amps provide plenty of bass if matched with speakers designed to reproduce it. Also obvious is the benefit of a good sub to any system other than one with a large and efficient main speaker (Tannoy? ZU? Vintage Altec?). If you have the clams for it, the Rogers integrated KT150 200 watt per side is pure muscle…I've heard one…pricey but cool. Tube amps, if they have some cajones in the design, seem to have more muscle than SS amps, but I could be basing that on how they sound…weirdly.
