From the manufacturer
GEB-7 Bass Equalizer
PRECISE TONAL CONTROL
The GEB-7 is a seven-band equalizer created specifically for the frequency range of the electric bass. Since the frequency range extends down to 50Hz, the GEB-7 is also great for adjusting depth and bottom end of an upright bass with pickups.
Description:-
With a frequency range from 50Hz to 10kHz, the GEB-7 is ideal for any bass guitar, including 5-string basses. Seven bands of EQ are available, affording greater control over the crucial midrange.
Features:-
- 50Hz to 10kHz frequency range specifically designed for bass
- Full range response, even for five- and six-string basses
- Can be used as a “boost” or “cut” pedal using the level control knob
- Great for eletric-acoustic bass applications
- AC adaptor or 9V battery operation
Specification
| Nominal Input Level | -20 dBu |
| Input Impedance | 1 M ohm |
| Nominal Output Level | -20 dBu |
| Output Impedance | 1 k ohm |
| Recommended Load Impedance | 10 k ohm or greater |
| Bypass | Buffered bypass |
| Controls | Level Control knob Equalizer Control knob 50, 120, 400, 500, 800, 4.5 k, 10 kHz Pedal switch |
| Indicator | CHECK indicator (Serves also as battery check indicator) |
| Connectors | INPUT jack: 1/4-inch phone type OUTPUT jack: 1/4-inch phone type DC IN jack |
| Power Supply | Carbon-zinc battery (9 V, 6F22) Alkaline battery (9 V, 6LR61) AC adaptor (PSA series: sold separately) |
| Current Draw | 30 mA |
| Expected battery life underuse | Carbon: Approx. 8.5 hours Alkaline: Approx. 18.5 hours *These figures will vary depending on the actual conditions of use. |
| Accessories | Owner’s Manual Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and “Information”) Carbon-zinc battery (9 V, 6F22) |
| Options (sold separately) | AC adaptor: PSA series |





















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