Boss Twin Pedals, also known as the Boss 20 Series, are dual-footswitch guitar effect pedals announced by Boss on January 18, 2001 by releasing the Boss RC-20 Loop Station.
Here are the Boss twin pedals.
Boss CE-20 Chorus Ensemble
Boss DD-20 Giga Delay
Boss EQ-20 Advanced EQ
Boss OD-20 Drive Zone
Boss RC-20 Loop Station
Boss RE-20 Space Echo
Boss RT-20 Rotary Ensemble
Boss SL-20 Slicer
Boss VE-20 Vocal Performer
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