There's more than one path to sonic bliss, and it doesn't need to cost a fortune. Just going off of retail prices, the mc152 is $5,000.
Granted, i don't know what all of your needs are in an amp, but you could roll that 5k into a pair of Heresy's at $3200 and a Bob Latino ST-70 tube amp with el34s or KT-66s for $1400. That pairing would likely outperform your Rotel amp even with lower wattage. The Tubes4Hifi amps don't have the overly warm and slow sound of the original Dynaco units. I've owned both and still have the Latino amp. Its a terrific value.
http://www.tubes4hifi.com/bob.htm#ST70
Granted, i don't know what all of your needs are in an amp, but you could roll that 5k into a pair of Heresy's at $3200 and a Bob Latino ST-70 tube amp with el34s or KT-66s for $1400. That pairing would likely outperform your Rotel amp even with lower wattage. The Tubes4Hifi amps don't have the overly warm and slow sound of the original Dynaco units. I've owned both and still have the Latino amp. Its a terrific value.
http://www.tubes4hifi.com/bob.htm#ST70