Originally Posted by commsysman
The Crown amplifiers are basically public-address system amps...
I use a Bryston 3B-SST amplifier... $4000.
You are not giving us a clue what you are willing to spend.
...the Vincent SP-331.. ....$1300
...Emotiva UPA-1 monoblock amplifiers for $700...
The Crown and the American audio amps are ~$600, but given that the OP has purchased a bunch of amps to compare leads me to believe that money is less of a concern than performance, but OP is not at a cost no object extreme.
This is what I would do.
Bose states, per the owners manual, "901 speakers are designed to work compatibly with receivers or amplifiers rated from
10 to 450 watts per channel"
I would use 450 Watt amp or greater. Here below is my short list.
All USD MSRP.
Emotiva XPA-1 pair, 500W@8 ohms, $1998
Belcanto MonoBloc pair, 500W@8 ohms, $5500
McIntosh MC452, 450W@8 ohms, $7500
Parasound JC1 400W@8 ohms, $9000
Bryston 14B SSTC 500W,8 ohms, $9950
There is a price gap in my list, specifically from 0 to $2000 and from $2000 to $5000.
I hope others could add their own input on all of this.
Interesting thread since Bose 901's are getting a good amount of interest over the ToneAudio website review.