The polyphonic STRING9 String Ensemble transforms a guitar into nine different string ensembles and string synthesizers while requiring zero modifications, special pickups, or MIDI implementation. It relies on the same technology powering all EHX 9 Series pedals. In a 9 Series first, the STRING9 includes the signature EHX Freeze effect on 3 of the presets to sample and hold notes and chords with infinite sustain.
A rotary switch on the STRING9 allows the player to select the sound of their choice, as follows:
 
SYMPHONIC: Re-creates the sound of a large symphony orchestra and features an octave down effect on the lower range of the guitar for a full sound
JUNE-O: Emulates the Juno® analog string synthesizer sound
PCM: Sound of a small string section sampled by a vintage PCM keyboard producing a warm vintage string sound
FLOPPY: Emulates the sound of an Orchestron® optical disc playback sampler, warble included
AARP: Emulates the classic ARP Solina® string synthesizer
CREWMAN: Emulates the Crumar Performer® analog string and brass synthesizer; Floyd in a box
ORCH FREEZE: Orchestral sound with EHX Freeze effect
SYNTH FREEZE: String synthesizer sound with EHX Freeze effect
VOX FREEZE: Mellotron® choir and strings sound from the EHX MEL9 with EHX Freeze effect