2-band EQ, bass and treble switch and active / passive on the bass knob (push-pull)
1 knob / volume of micro (too bad they are not barbed, it was soon likely disrupt the mic when the handle gets angry slap in)
The output level of the preamp tt is simply astounding! I mounted my Marcus Miller Jazz Bass sound is dmant. When the strings are new I leave the knob acute tjr 0 and low background, once the strings a little tired I go slightly treble ms dej trs trs are present.
With the bass and treble background 0 is obtained with its monstrous regulation of microphones should all different styles, it's slap personally I prefer the sound of the preamp (high-high). It requilibre bass, the low E to boost the prsence is acute and the ground was incredible shine
With a setting of acute pushed a little you can almost mimics the sound of a metal Ricken 4001 ^ ^
Although a bit expensive but worth it (50 + 310 labor approximately) it completely dope my jazz bass, perfect grace it, change anything and once plugged into my little Mark II and the attention the 104HF DEGT: d