Bought this one a while ago. Took a bit for burn in, but after a while it got better every day. I compared it to several other amps and it surprisingly outplayed quite some of them. Not quite on level with my KT88 Tubeamp, but surprisingly close. Good soundstage, good imaging, god natural timbre & texture of instruments an voices. I added a small vishay bypass cap to the coupling caps, helped improving a bit on micro detail which I consider to be a rewarding little mod. i can recommend this board without drawbacks.