The S9 String Ensemble, an effects pedal that provides a variety of sounds. ELECTRO-HARMONIX STRING9 String Ensemble The STRING9 String Ensemble is a pedal that transforms a guitar into 9 different string ensembles and string synthesizers without requiring modifications to the guitar itself, such as special pickups or MIDI implementation. The STRING9 is the first in the 9 series to feature the EHX Freeze effect on three presets. It can sample your playing to create infinite sustain. - Brand: electro-harmonix - Model Name: S9 String Ensemble - Function: Effects Pedal - Controls: 4 knobs (Depth, Volume, CTRL1, CTRL2) - Output Terminals: Effect Output, Input - Included Accessories: Original Box, Instruction Manual Thank you for viewing.