Fully functional and Perfect condition. Can be bridged to mono. 220-240V. For USA, unless you have a 240 V circuit, then you will need a step up transformer. I used it with one that is good for 5000 W and cost less than $400 brand new on Amazon. The amplifier was $19,000 when it was new and the current equivalent model from Halcro is about $40,000. If you email the company with questions you’ll get an answer, probably from Mr. Lance Hewitt himself. What a great company! To me this is the top end the best of the best. What did I replace it with? Nothing. I have another DM 38 that I will continue using because they are the best. :-) Ships worldwide at the quoted price.