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Boss GEB-7 Bass Equalizer i EQ is in excellent condition. Barely used. Comes with original box and manual.  The Boss GEB-7 Bass Equalizer is a 7-band graphic EQ pedal designed specifically for the frequency range of electric and acoustic bass guitars. It costs about $130 and features frequency sliders that extend down to a deep 50Hz and up to 10kHz, supporting 4-, 5-, and 6-string basses. [1, 2, 3, 4]Key Features and Specs·Frequency Bands: Center frequencies at 50Hz, 120Hz, 400Hz, 500Hz, 800Hz, 4.5kHz, and 10kHz.·Boost/Cut Range: Each slider provides up to ± 15 dB of control.·Master Level Control: A separate level knob allows an additional ± 15 dB for boosting solos or matching clean/active levels.·Power: Runs on a single 9V battery or an optional PSA-series adapter. [1, 2, 3, 4, 5]Common Uses·Midrange Shaping: The crucial mid frequencies (400Hz, 500Hz, and 800Hz) let you dial in punchiness or clear out muddy tones.·Low-End Control: The 50Hz slider helps tame or reinforce deep sub-bass rumble depending on your cabinet and room acoustics.·Solo Boost: Turn up the master level slider to push your signal forward during bass breaks. [1, 2, 3, 4]