The Demeter TRM-1 Tremulator is designed to be durable and bring high quality sound. Classic Sound without the noise. A hybrid of vintage sound and state-of-the-art quality, the Demeter Tremulator is designed for years of trouble-free operation.Designed to emulate the classic Fender tremolo effect (or vibrato as it is often referred to), the Tremulator features “lopsided” amplitude modulation with a rounded off traingular modulant waveform. Suffice it to say, the Tremulator sounds like the classic effect found on many vintage amps, but with less noise and hum and a greater range of speeds and depths.