I also own the RM-10 MkII and just bought a set of EM-7 12v. It has been modified by the previous owner and it is also hardwired for 3 ohm speaker taps. I'm using it on my 92db (conservative, probably 94 or 95) speakers that don't go below 8 ohms and reach 12 ohms. I find this amp truly amazing for the 12 watts (probably closer to 8 on my speakers) it offers. It is detailed with excellent extension, although I feel the bass is better on the RM-10 (I use the 4 ohm tap with my speakers). I feel fortunate to have both these amps, but at some point I fear I will be forced to choose between them.