I've been spellbound by the tiny FX for several weeks now. If you follow the TPA3116 thread you know I'm not the only one who has fallen for this pint sized beauty. There's so much buzz in the other thread after pairing it with the class d Volt+D I thought it deserved a thread of it's own. The Chinese tubes are ok but surpassed by a variety of vintage 5654, 6AK5, EF95 and WE 403B substitutes. The volume control is a delight with nice detent and the feel of an expensive pot. It comes with a DC 12v1a wall wart and I'll address that later. Wonderfully detailed and accurate in it's presentation it would be right at home with high end gear.