I bought two of these brand new. Now only need one, so letting one go. Fantastic sounding audiophile EL84 output tube based amp. I'm including three different rectifier tubes so you can experience different sound possibilities, a 5AR4, 5U4G and 274B. Can support many devices. Can also be used as an amp only, so you can use your own preamp. Fantastic headphone section too, which is very adjustable depending on the impedance of you phones. Includes power cord, metal cage to protect tubes from kids or pets, manual and original box. This amp sounds better than all of the SET amps I have tried over the years. For review go to: https://www.dagogo.com/kingko-audio-ka-101-integrated-amplifier-review/ I'm rating it a 9 only because I've owned in for a couple months. Otherwise, brand new.