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This is an Ibanez TS-9 Tube Screamer Overdrive Effect Pedal.
There's a reason that all the effects companies sell overdrives housed in little green cases, and the Ibanez TS-9 is that reason.
This tonal wonder uses the same design and the same JRC chip as the originals.
The tone is fat and warm, with overdrives ranging from mild and fuzzy to blistering and hairy.
The familiar three knob design has controls for Drive, Level, and Tone so you can quickly dial in the perfect tone for any room or situation.
This pedal is in good overall condition as you can see in pics- typical marks from normal use.
Tested and works as it should.
Don't pass this by.