FOR SALE Glockenklang 3 Band Preamp - 2 Pickup/4 Knob - $150 shipped This was in my Roscoe Fretless SKB that I just Sold. The buyer wanted a deal because he planned to have roscoe install stock guts. I kept this to compensate. It's 9 volt system. A battery clip is included and the wires that lead to the jack are labeled tip, ring and sleeve. Washer and nuts are all accounted for. No knobs. Worked perfectly but sold as is. In case you have poor soldering skills. Edit:electronicly fine, mechanically the treble knob has what I considered a weak click. I don't know if was the knob being slightly loose or if the clicker inside just pull away some. "Bid accordingly" How can I sweeten the deal? One new free 9 volt is also included. Wow! Not interested in trades unless its a Mono Vertigo Gigbag. It's the only gear I need at the moment.