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.
The Pentatone Equalizer is a standalone version of the 5-band equalizer section in the Ibanez Pentatone Preamp. Adding a continuously variable Q control on each band, which allows for a wider variety of sound creation, enables even more detailed sound creation. Furthermore, the ±9V power supply circuitry provides a wide headroom.