LR Baggs Element VTC Active Pickup System - Steel Stringwith Volume and Tone ControlThe EAS-VTC builds on the strengths of the EAS with the addition of a treble tone control and a special low frequency compression circuit. The LF compressor tames low end thump and mimics the actual dynamic response of the guitar for enhanced realism.FEATURES:All-discrete endpin preampPre-attached Element pickupFits both 3/32” and 1/8” saddle slotsBuilt-in LF compressorSoundhole mounted volume and tone controlBattery type: Single 9VBattery life: 1,000 hrs