Rotel amplifiers are a decent amp for the money. With what might be an overly light or bright speaker, a Rotel amp can compensate by giving a slightly rich and warm overall presentation.
As for the McCormack DNA 0.5? This is somewhat of a legendary amplifier. Several years ago, the DNA 0.5 was rated a competitive second to the highly touted $30,000 Krell Reference Standard amplifier. (I believe the DNA 0.5 sold new for less than $2k.)
The McCormack DNA-2 Limited Anniversary Edition was rated the best solid state amplifier by Peter Moncrief of IAR in 1998 and according to Mr. Moncrief, the LAE easily exceeds both the Krell and the DNA 0.5 but was substantially more expensive than the 0.5. (BTW, some place Mr. Moncrief head and shoulders over most other reviewers.)
A DNA-2 Revision A or a DNA 0.5 Revision A easily exceeds the performance of the off-the-shelf DNA-2 Limited Anniversary Edition.
In summary, the DNA 0.5 amp could be a very wise choice. A DNA 0.5 Revision A amp could be an even wiser choice.
-IMO
