- Boss GK-5B Bass Synth Pickup; next-generation divided pickup for Electric Basses and BOSS guitar synthesizer products using the Serial GK interface, improved performance over the previous 13-pin interface; stable digital signal transmission; light and streamlined connector housing; flat, slimline pickup fits on most electric basses with four, five, or six strings; adjustable sensor spacing to match most bass bridges; the connector housing mounts securely to the instrument s strap button with the included bracket; Pickup Dimensions (W x D x H): 138 x 15 x 9 mm (5,44 x 0,59 x 0,36 ), Connector Housing Dimensions (W x D x H): 38 x 73 x 16 mm (1,5 x 2,88 x 0,64 )Note: a 1/4 TRS-Jack cable is required for operation (Boss BGK-15 Serial GK Cable, Thomann Art. No.: 571693 or BGK-30 Serial GK Cable, Thomann Item No. 571697 - not included in the scope of delivery).