The Live Active Electronics package combines our custom-designed soapbar pickups with EMG's BTC and BMC circuits, providing a 3-band active EQ. It features dual concentric bass and treble controls with an internally selectable high frequency EQ piont, a dual concentric mid control with variable mid frequency and mid cut/boost, an active/passive bypass, master volume and pickup blend.

1. Dual-concentric bass and treble controls with center detent: ring is bass, center knob is treble. Treble frequency is selectable inside the control cavity.
2. Dual-concentric midrange: ring is frequency, center knob is cut/boost with center detent.
3. Pickup mix with center detent - mixes pickups in series for a greater diversity of tone.
4. Master volume
5. Active/Passive Bypass micro-mini switch

Our Studio Active Electronics package is for the ultimate in versatility, this combines our passive Multi-Voice Tone Circuitry with our Live Active Electronics package. In addition, two 3-position mini-toggles provide series/parallel/single coil switching to achieve 3 unique voicings for each soapbar pickup. You can operate completely in active mode and passive circuitry or combine both passive and active circuitry.

1. Dual-concentric bass and treble controls with center detent: ring is bass, center knob is treble. Treble frequency is selectable inside the control cavity.
2. Active/Passive Bypass micro-mini switch
3. Dual-concentric midrange: ring is frequency, center knob is cut/boost with center detent.
4. Pickup mix with center detent - mixes pickups in series for a greater diversity of tone.
5. Master volume
6. Frequency Selector for the SD Voicing circuitry.
7. Filter Curve Selector for the SD Voicing circuitry. Down it's a notch filter, pulling out midrange depending on the frequency selector and pickup combination and mode settings. Up it's a high-frequency roll-off filter with an emphasis in the upper midrange, again dependent upon pickup selection, frequency selector and pickup mode settings.
8. Bridge pickup voicing mode selector 3 position switch: down is series humbucking mode (the standard way most pickups are wired), middle position is single coil, up is parallel humbucking mode.
9. Neck pickup voicing mode selector - operates the same as switch 8 above.

U.S. Masters M Series basses combine functions of U.S. Masters proprietary MultiVoice Passive Voicing (MVP) circuit with a 3 band EMG active equalizer and U.S. Masters’ custom-designed dual soapbar pickup set, made for U.S. Masters by Kent Armstrong. It is designed so you can quickly and positively make use of an extremely wide and diverse range of world-class bass voicings. The bass may be run passive or active: pickups direct out with only the coil tap and blend control influencing the sound (MVP bypassed), it may be run in passive mode with the MVP circuit engaged or it may be run active with the active EQ engaged. The EMG active EQ runs on 2 9 volt alkaline batteries. Make sure to unplug when not using the bass as to not drain the batteries.

1. Passive/Active - up=passive, down=active
2. Voicing - center - bypass; down is a mid-cut voicing and up is a mid-boost with high-end rolloff; both switch positions change their influence based upon the coil tap setting and pickup blend settings
3. Coil Tap - down both pickups are dual coil series humbucking, up both pickups are single coil using the neck side coil
4. Blend Control
5. Volume
6. Treble
7. Mid
8. Bass