The EMG BQC is EMG's three-band onboard active EQ control module with a sweepable midrange, supplying the bare circuit board and pot set without the wiring harness around it. It carries bass and treble shelving controls that lift or cut their respective bands, plus a semi-parametric mid section where the sweep control sets the centre frequency the mid control then boosts or cuts, giving precise tonal shaping across the active circuit's range. The board runs on a single 9V battery shared with the rest of the EMG active system it sits behind. The BQC sits at the more featured end of EMG's onboard EQ family. The two-band BTC and BTS modules give bass and treble shelving only, the stacked BQS gives three-band shaping in a more compact two-knob format, and the BQC opens the mid control out into a full semi-parametric sweep that lets the player land on the exact midrange frequency the instrument and amplifier combination needs and then nudge it. The trade-off is real estate: where the BQS hides three bands behind two stacked pots, the BQC needs three separate control positions on the guitar plus the sweep. Best suited to active-equipped instruments where the player already lives with the BTC's two-band layout and wants the finer midrange control that a sweepable parametric brings, or to custom builds and replacement projects where the existing control cavity has room for the larger BQC footprint. Compatible with EMG's solderless quick-connect harness range when paired with the matching wiring kit, sold separately. Pots, sweep, and circuit board only in the box, no jack or wiring. Distributed in the UK by Selectron.