I heard this combo back in the spring, with a PC > Audiolab M-DAC source.
The synergy seemed fine to me: no problem at all reaching high volumes without strain. I found a little roughness in the upper mids, but for the rest the sound was both punchy and smooth. The Tucana II is a fine amp. I suspect it'll come down to whether you like the presentation of the twenty 24s.
:cheers:
Matt