Benytter seg av BOSS sin "Asymmetric Overdrive" krets, for å skape en varm overstyringslyd lik den fra en rørforsterker
The SD-1 produces the warm, smooth distortion of an overdriven tube amplifier while maintaining the subtle nuances of your picking technique. BOSS' unique asymmetric overdrive circuitry delivers a genuine overdrive effect for a classic guitar sound. A Tone control is also provided for precise tonal adjustment.