Fantastic little amp! I had two of these running as monoblocks at 200 wpc bridged, then tried one in stereo at 50 wpc @ 8 ohms (100 wpc @ 4 ohms). One was good enough for me, so I am selling this one. Underrated power, clear sound - great all around amp. I do not know the age, I have had it for about 2 years and bought it here. Some minor scratches, and 2 screws missing which I did not even see until now. Works perfectly-these are built like a tank and designed to last. I do not have original box or manual. I will pack well for shipping. Reasonable offers considered, others politely ignored. Check my reviews - I am fair- if there are any issues that I did not disclose, I will take returns Continental US buyers only Please.