Both units are around a year old and were purchased new. Home use only. No issues electronically or cosmetically. Stereo power amp, 50 watts per side with two volume controls and two presence controls for each Channel. Preamp has a low mid and a high mid control which really adds versatility to dialing in your tone. Tons of gain on tap and plenty of low end. I ran the unit in stereo and it sounds massive when you start moving air pushing the volume. Ships in the original packaging.