I think I’m OK with my primary concern - and I’ve had enough electronics to understand about power and the sound produced. There isn’t anything however, that shows the impedence of the energizer. If it’s 8 ohms or better, probably no problem, but if there is a dip at some frequencies to say, 2 ohms, those ICE modules can put out a lot of power. And you’re right, the STI-1000 does sound better than the vintage Sansui, plus with my Rectilinear III speakers, it controls them very well. Bass is much tighter and volume is effortless. And I pay attention to the gain with my speakers too!
The secondary concern is that I have about 10 gauge speaker wire going from the amp to the speakers. There are only 4 binding posts, not 8, and there is no switch from one output to another. Someday, I will upgrade the speakers and the speaker wire, possibly to anticables or to an Audioquest wire in the non-bankruptcy range.
If you look at the energizer, it has a front panel switch for loudspeakers / earspeakers. The cable out the back attaches to the amplifier. (I have it now on an old Onkyo integrated amp) These wires are not anything like the size of my normal speaker cable. They are 1986 vintage maybe like 24 or 28 gauge. I’m then supposed to take my speaker wires and attach to the clip terminals on the back of the energizer.
I could probably get one of those under $300 Chinese tube amps and use that for the energizer from the STI outs. I don’t have room for the 1990 vintage Onkyo or the 54 pound AU-919…