Have a look at our production model, the I Sea Q.
Our Lab Series #48 is here. A completely "transparent" 6-Band EQ build with Knobs instead of faders, for reliability reasons.
Classic 100 - 200 - 400 - 800 - 1600 and 3200hz. At 12 O'clock, the EQ is completely transparent, letting the pure tone thru. You'll get boost/cut while adjusting from 0 to 10 on each band.
Power consumption : 13mA
Voltage : 9Vdc center negative