Two totally different sounding amps. The MC275 is definitely a warmer sounding amp that has the classic tubey signature. The Rogue has more of a solid state sound while retaining the tube magic. More like a Audio Research amp. My question is what are your speakers? Both amps are very powerful. I've had both amps in my system pushing Sonus Faber Olympica iii. I thoroughly enjoyed the MC275 but it was a bit too warm for the Olympicas. Otherwise a fantastic amp. I'm currently using the ST-100 and so far so good.
