MXR Bass Compressor M87 I tried using it with an active bass, but I'm personally finding it difficult to adjust the input and output gain, so I'm selling it. It sounded very good with a typical passive Jazz Bass, etc. (Currently using active bass as the main). Used only a few times for a short period, so it's in good condition, but please refrain from purchasing if you are concerned about minor details to avoid any problems. Includes all accessories, price includes shipping. Please refrain from price negotiations. I will not be able to respond.