I think Its 5 inputs, maybe four... the first input is balanced, and there is balance output, but from Micks website he kind of says he prefers unbalanced operation, but I could run my whole system balanced as all of the necessary pieces have balanced operation.
There are 2 switches behind the 6sn7s for low med and high gain. On the back near the balanced output is the mastergain switch with 5 positions in case anyone gets hiss from the tubes because of a high efficiency amp??? I think, but I hear zero noise. Seperate power supply which is shaped just like the one above except its heavy! and has one tube smack dab in the middle. Supratek supplys an umbilical which attaches both pieces. The tubes are also big and they do run hot so make sure they have breathing space... Also I believe it reacts to cell phones so it may be unshielded, but thats not a big deal, perhaps running balanced would stop that.
For the last three nights Ive been up late listening and its truly amazing! Everything is very even in its presentation, and the sound is clear and crisp. I guess it really reflects the importance of a good preamp and the abilities of the use of larger multiple tubes, which previously Ive never experience. Also Supratek seems to really know their stuff.
Mike