The amp head has been checked and everything works as it should. Few customizations: There is an added 1/4 jack input on the front, so easy plug and play for guitar. There are an 4Ohm, 8Ohm and 16Ohm outputs. See photos. New tubes (elco's) Only guitar input has been tested (instrument 1 controls). Microphone inputs I have not tested as I don't have microphones. Former owner did say everything works and the Eminent had a complete check, but keep in mind that microphone inputs have not been checked. Vintage, Made in West Germany sometime in the early 1960's, probably 1963 because of the gold/yellow/black colors. Dynacord along with Schaller, Echolette and Hohner, produced during the sixties in West Germany, top-of-the-line professional equipment for musicians. Their models rivaled the best from England's Vox, Selmer and Marshall and USA's Fender, Gibson and Ampeg. Both in building & sound quality. Model EMINENT was first introduced in 1962 and was the flagship mixing amplifier of Dynacord during the 1962-1966 period. The amplifier will be shipped in a wooden custom build box for perfect protection.