The classic Dual Filter preamp. Volume, blend, and an FV Variable Q Filter for each pickup. The heart of California basses like the Series II, with no extra frills. A rich clean sound with uber-quiet filters.
Upper Filter Control: Variable Q (0-13dB) with center detent.
Lower Filter Control: Frequency (200-5300 Hz).
BP Buffers for passive and most active pickups.
Idle current: 2.1 mA