So, the amp is a Muzishare X7 with Genelex KT88's and 12AU7 phase splitters and vintage telefunken 12AX7 preamp tube. It makes 25W in Triode mode 45W in ultra linear. I have generally used it in triode mode, but have used both. I kinda prefer the sound of the triode mode. I will check the impedance of the speakers when I have a chance. They are in a room with a concrete floor that is quite large. The room itself may play into it.. I have a pair of Linn Majik 140's with a Naim NAP-250 amp that are upstairs in a room with plaster walls and wood floors and they seem to have deeper bass and better bass control, which is to me surprising as they are a much smaller speaker.