Sonic Research Sonic Research Model ST-300 Stomp Box Strobe Tuner

Model ST-300 Stomp Box Strobe Tuner A True Strobe Tuner in a Stompbox Format Super bright LED display readable in direct sunlight True bypass Flexible Output: Muted output with quiet relay switching or signal passthrough (no mute) Chromatic and guitar/bass modes Fully programmable for alternate tunings and temperaments USB port for ease of customizing Extreme accuracy: ±.02 cents guaranteed Rugged die-cast aluminum case Dual power jacks Made in USA User Manual