Super rare 100 Watt per channel tube amplifier. Made only on a special order for Japan’s market. USA never imported these so mains voltage is 100 Volt AC, but today that is a least of a problem great step down transformers are plentiful in all sizes and quality/price ranges. The amp appears to be original but I can not guarantee that, all I know it works like it souposed to and sounds just glorious with incredible authority for a tube amp. Especillay with companion PRA 1000 all tube preamp listed elsewhere. It uses tubes as follows; 4X6GB8, 2X12BH7, 2X12AT7, 3X12AX7 and 1X6RA3. All tubes are like new on my tester. No original box or manuals. Guaranteed to work as intended but no returns accepted. Pay pal, shipping/insurance are buyer responsibility.