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RE: exactly my impressions also.

Posted by AbeCollins on November 8, 2013 at 15:14:39:

I know Rogue uses the Hypex UcD Class D modules but they modify the front-end with tube inputs and do something with the output MOSFETs.... or something to that effect from what I recall reading.

The design got a lot of positive press and praise but I didn't hear it that way.

Unfortunately, their "Hybrid Class D" implementation struck me as worse sounding than some plain-ole mainstream Class D amps that I have owned.

At the other end of the spectrum, I know that Rogue's all-tube amps are fantastic sounding and a great bargain. I had my eyes on the M-180's but then found a great deal on a pair of used Ampzilla 2000 2nd Edition SS mono blocks. But the M-180's are on my bucket list to try someday. ;-)