The EAS-VTC-N builds on the strengths of the EAS-C with the addition of a treble tone control and a special low frequency compression circuit. Delivering the same dynamically rich, high fidelity sound as the steel string version, the Element Active System Classical is specifically voiced to articulate the frequency response of nylon string instruments.   All-discrete endpin preamp Pre-attached Element pickup Fits both 3/32? and 1/8? saddle slots Built-in LF compressor Soundhole mounted volume and tone control Battery type: Single 9V Battery life: 1,000 hrs