Martin Audio Amp MA4.2S. The left handle is missing one screw and the right handle is loose. Otherwise this amp works great. The item “Martin Audio Amp MA4.2S” is in sale since Sunday, February 16, 2020. This item is in the category “Musical Instruments & Gear\Karaoke Entertainment\Karaoke Mixers”. The seller is “amadou4062″ and is located […]