I have owned the Acoustat 2+2 with the MK-121 transformers for some time. They are now sold (Big Mistake) but experimenting with many different amps I found for the money the Moscode 600 worked better then most, tight base and great mids and highs.
You need an amp that can run very low impedance as the Acoustat’s with the high frequency resister adjusted the speaker can run at 1.5 ohms and the Moscode can handle it with no problem plus it is a great match for the speakers you have.
You need an amp that can run very low impedance as the Acoustat’s with the high frequency resister adjusted the speaker can run at 1.5 ohms and the Moscode can handle it with no problem plus it is a great match for the speakers you have.