The Boss GEB-7 is a 7-band graphic equaliser specially designed for electric bass, enabling precise sound shaping. It allows frequencies to be selectively boosted or cut to optimally match the bass sound to the instrument, playing technique or musical environment. It is particularly popular with bassists who want to shape their sound in detail – whether for more presence on stage, in the studio or for use with different amplifiers. Technical features Frequency range: 50 Hz – 10 kHz Equaliser bands: 50 Hz, 120 Hz, 400 Hz, 500 Hz, 800 Hz, 4.5 kHz, 10 kHz Level adjustment per band: ±15 dB Design: Analogue Power supply: 9 V battery or optional 9 V DC power supply (centre negative) Power consumption: approx. 16 mA Dimensions: approx. 73 x 129 x 59 mm Weight: 440 g Country of manufacture: Taiwan Sound application The seven sliders allow the bassist to fine-tune the sound – from deep punch to present mids to clear highs. The mid frequencies (400 Hz, 500 Hz, 800 Hz) are particularly critical for assertiveness in the mix and can be edited with great nuance using the GEB-7. The equaliser is suitable for both subtle sound correction and drastic sound changes.