I would stay away from the GaN amps as nearly all but Orchard have load dependent frequency response. The current state of the art is Purifi with Hypex a close second. Both have inaudible distortion, load invariant frequency response, run cool and will drive just about any load. Prices are very reasonable- I paid around $2400 for a set of 9040 Purifi monoblocks with 900W into 2 ohms, auto on/off feature, selectable gain, etc. No brainer.