xtenzi amplifier replacement bass knob control remote xtbr3as compatible with select powerbass asabass xtenzi "xtenzi brand external remote knob xtbr3as bass boost wired variable level controller (secondary gain control) ,includes bass knob, cable. , <br>compatible with select powerbass amplifier like, asa400.4x , asa-400.4, asa600.4x , asa-600.4, asa300.2x , asa-300.2, asa400.2x , asa-400.2, asa600.2x , <br> asa-600.2, asa800.2x , asa-800.2, asa400.4x , asa-400.4, asa1100.5x , asa1100.5, asa700.5x , asa700.5, asa1000.1dx , asa-1000.1d,sa1500.1dx , asa-1500.1d, asa400.1x , asa-400.1, asa1200.2x,. <br>make sure the remote is compatible with your amp before purchase. not all amplifier will be properly control with this item. <br> important note:above mention accessory/product is a xtenzi brand to help consumer find the correct part all brand names listed are compatible with the referenced product or technology only."