Gamut M250 MK3


I got a pair of Gamut M250 Mk3 mono-blocks that went in place of a D200 mk3. They were installed yesterday, and worked fine for a day. This morning I turned on the amps to warm up. A bit later I went back to the listening room and heard a very loud hum. First I looked out the window for a garbage truck; then put my ears against the speakers. Nothing there. It was coming from the amps. Power-cycle of both amps confirmed that both were making that noise, though one was louder than the other. About 10 minutes later the noise was gone. I have a feeling that this might be one of those intermittent problems that's difficult to track down, but I do want to get to the bottom of it while they're in warranty. To other owners of the M250, have you ever experience such a problem?
ping2357
i used Gamut M250 mklll about two years,every day 4to6hours.nothing happen like that,so i suggest send back the amp to dealer.
Hello,
I ould like to have informations about the sonic differences between the D200 mkIII and the M250 mkIII.
I actually own a D200 mkIII with my Tannoy GRF and I'm very pleased with it.
I have the opportunity to buy M250 mkIII amps but is it a good idea ?
My other solution would be a class A amplifier, like Pass XA.5 series.
Thanks a lot for your advices.
I tried Pass (X350?) with my Sonus Faber Stradivari. It wasn't for me. I love the Gamut sound. In spite of their sensitivity ratings, the Strads needed that much power to sing. Better channel separation is NICE! Save the technical issue at hand, which will be worked out eventually, it was well worth the upgrade. I wouldn't go back to the D200 as long as I have the Strads.
Thanks for your answer.
The big differences between the D200 and M250 are more power and channel separation ? No big difference in sound, for example bass control or extension ?

What was the problem with the Pass : could you explain a bit more ?
M250 of course bass control and extension is better than D200,also micro dynamic is better than D200.