Their superb amplified tone is thanks to the Acoustic Resonance Transducer technology ('ART') which picks up the warm acoustic tone whilst avoiding the infamous 'twang' and harshness of other electro-acoustic instruments. The top-line APX 1200II and APX 1000 guitars also feature the ground-breaking Studio Response Technology ('SRT') which accurately mimics the colour and response of top condenser microphones to give you the warmth and detail of a studio recording - even when you're on stage!