Bartolini HR-5.4AP Pre-Wired 3 Band EQ Active/Passive Preamp The Bartolini HR-5.4AP Pre-Wired 3 Band EQ Active/Passive Vol, treble, mid, bass, blend and 3 way switch. A Pre-Wired harness saves the time and aggravation of wiring your pre-amp and pots into your instrument. They feature our industry leading pre-amps and premium audio-quality potentiometers with smooth control and ready for years of rugged use. The HR-5.4AP/918 uses a 3-band EQ and pre-amp. Two holes for Volume control: Volume (with Active/Passive push-pull switch) – Blend. Four holes for Tone control: Treble-Mid (+ 3 freq toggle switch) – Bass. NTMB+ Mid Switch Configuration min Volume (with Active/Passive push-pull switch) – Blend Treble-Mid (+ 3 freq toggle switch) – Bass Includes: 2nd battery clip (18V option), wiring i.
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