I have to back peddle a bit on this Audion Black Shadow 845. I got into the potentiometer and cleaned it with Deoxit. While at it I did the tube pins, speaker jacks, fuse, rca and power inlet. I also changed the speaker cable from Graditech to my Inakustik 2404 AIR. Kind of a holly crap change. For one, the microphonics of the E88CC are gone. The sense of power is much higher. More clean. Good body. I'm really liking this amp. Piano notes hang and decay as they should. The wollyness I heard is most all gone. If I put the Blade back in I would notice it more. But I like the heft and weight of the bottom end. This is a very good amp now. Took long enough. And a pile of cash. In the end I have a amp that performs as I hoped.