This is the first 10 Band EQ from Leqtique, a boutique effects pedal brand that Japan is proud to present to the world. This is a completely unused item from an effects pedal that is no longer sold. The frequency ranges that can be adjusted with the "10 Band EQ" are 31, 63, 125, 250, 500, 1k, 2k, 4k, 8k, and 16k (Hz), with boost and cut of ±18dB. It is written that the low-frequency 31Hz range is for creating or suppressing a boxy sound, and it is famous for being able to create a boxy sound by raising the fader. I am selling this to organize my equipment. I think it will be useful for both guitars and basses, as well as in the effects loop of an amplifier. Please use it for sound creation in recording as well.