Mix and match up to 4 TC-Helicon vocal effect pedals together conveniently, simply and with less cable clutter than ever before with this essential audio and power accessory kit-ideal for VoiceTone Singles. With the included 12-volt power supply and DC interconnect cables, there are many different options for connecting your TC-Helicon effects. The power supply in the Singles Connect kit is more than powerful enough to power one of our large multi-FX units and a VoiceTone Single pedal at the same time.