Schertler Lydia EQElectrostatic under saddle transducer for acoustic and classical guitarsNominal impedance 100 OhmFrequency range from 20 Hz to 18 kHz (+/- 3dB)Electronics Discret circuit Class AConnections Jack Stereo 6.3mmBattery life ca 270hBattery CR2450Controls Volume, trebble, bass in soundholePickup Lydia Electrostatic transducer15 years of research and development in the field of under-saddle systems has culminated in Schertler’s LYDIA. This revolutionary air chamber technology built around an ultra linear condenser microphone, with solid diaphragm and integrated electronic settings, has been specially designed to reproduce the true sound of your instrument. Safe and reliable in all kinds of performance situation, it delivers an impressive sound with enhanced dynamic.LYDIA EQ includes a CLASS-A internal preamp, with volume, bass and treble pots, installed in the sound hole. One lithium battery is also supplied.All models are available for steel and nylon string guitars. The technology is compatiblewith previous SCHERTLER under-saddle systems, offering a practical “upgrade” option.