you could look at model 6's or M-10's, or M-12's, etc. the M-8 usually sells for $7500 or more if it's in really good condition. as nice as it is you could be overlooking some outstanding amps by Rowland that do come up for sale.
an M-10 makes 150W for example, the same as the M-5. all Rowland amps are overbuilt so 4 ohm speakers should NOT be a deal breaker.
an M-10 makes 150W for example, the same as the M-5. all Rowland amps are overbuilt so 4 ohm speakers should NOT be a deal breaker.