KRELL FPB 650M MONO BLOCKS ..?

"I would like more power"

I don't think you would gain anything at all, can't believe you don't have enough power already.

What are you trying to get that you can't get with what you've got already, better bass, sweeter mids and highs, change in tonal balance?? list your source and preamp as well.

Cheers George

I have no experience with Krell and cannot comment on your specific question, but when I bought my 801Ns I had an MC7300 that at 300W/channel I thought would be fine. It wasn't. Replacing the MC7300 with a pair of MC1000 monoblocks made a big difference never regretted.

Bill

As tested by Stereophile your 350M's can give.

"maximum power delivery of a monstrous 475W into 8 ohms (26.8dBW), way above the specified power. 850W was available into 4 ohms (26.3dBW) and while I measured 1060W into 2 ohms (24.2 dBW)"

I cant see any improvement happening by going to the same topology even more powerfull 650M's driving your 90db speakers, as both amps would drive the 801n speakers on their ear.

This is why I ask what are you trying to get that needs to be different, and what is your source and preamp?

Cheers George

The 650m will have a fuller, heavier bottom end and a little larger soundstage. I would know, I've sold them new. mc and mcx versions are more articulate, clearer sounding. I sold them new when they were current and have sold many over the years.
350m became 350mc then 450mcx
250m became 250mc then 350mcx
650m became 650mc then 750mcx
The transformers and chassis size are all the size within each model upgrade. The mcx version modified a driver board to push another 100 watts out of the amp. It worked. Never confuse a 350mc with a 350mcx the 350mc is a much better (and larger amp)

Hi.
here is my current sources:
Preamp: Krell evo. 202
CD player: Esoteric sac x-01
Amplifiers: krell fpb 350m
Interconnects: Transparent reference XL (s.s)
Speaker cables: Transparent reference XL (s.s)

Thanks

mac