I have heard the original v4 that were 135 w or something like that and they are great . Would love to hear the 120's.... I am sure they are great. The new 60 watt Quicksilvers are more my speed. I own a pair of Mid Monos and would buy another Quicksilver in a heartbeat. They are great amps. Look past the plain exterior, they are built like a tank , are super reliable , and sound great. Huge value for the $$$