I owned a 23, I've borrowed a 23.5 and I owned a 27.5
Of the three, I think the 27.5 was the best amp at it's
given power rating but the other two had better bass
control and a more powerful sound as one would expect
given the difference in output. The 27.5 had a liquidity
and spaciousness which puts it in the upper echelons of
the best solid state amps. It may be one of the best ever
produced by Madrigal. I only sold it because it didn't
have quite enough juice to do my Magnepans justice. I
moved to a Levinson 335.
Of the three, I think the 27.5 was the best amp at it's
given power rating but the other two had better bass
control and a more powerful sound as one would expect
given the difference in output. The 27.5 had a liquidity
and spaciousness which puts it in the upper echelons of
the best solid state amps. It may be one of the best ever
produced by Madrigal. I only sold it because it didn't
have quite enough juice to do my Magnepans justice. I
moved to a Levinson 335.