I have a nearly brand new Roland V-Bass for sale with the GK-2B pickup. The unit has seen about 5 hours of playing. The pickup has been mounted using the double sided tape only. All equipment is perfect. I recently relaized I cannot even come close to using the unit's potential. So, here is it. I have all the manuals and the v-bass box and all supplies. I will also consider offers for 5 or 6 string basses, preferably higher end. I live near king of prussia so if you want to try it out just let me know. Thanks.