The GLOCKENKLANG 2-band onboard preamp………

is active/passive switchable (at the volume push/pull), has a balance-pot with no volume dip in center-position, a treble-pot with +/- 18 dB@18 KHz in active mode, acting as classical high-cut in passive mode, and a bass-pot with +/- 14 dB@40 Hz. Battery-connection is 9 volts. 

Due to the high performance electronic components, in flat position of the eq you can hear no difference between active and passive mode ! 
It comes pre-wired with high-flexible cables.

Don´t mind the frequencies, Glockenklang chooses them very carefully !

Specifications:

Gain: 1 (0 dB)
Input-impedance (without Balance): 1,5 MOhm
Frequency range: 20 Hz -20 KHz
Bass: +/- 14 dB@40 Hz
Treble: +/- 18 dB@18 KHz
Power requirement: 9 volts/1,3 mA