Description
If you’ve ever wanted a soapbar set that hits hard down low without going muddy or brittle up top, the MK4CBC set is worth a serious look. This is a matched pair of Bartolini’s MK Soapbar dual-coil humbuckers — the MK4CBC-T for the neck and the MK4CBC-B for the bridge — voiced from Bartolini’s Classic Bass series, so expect a passive design with an unusually wide, resonant frequency window.
The bridge pickup measures 4.24″ (107.57mm) long by 1.33″ (33.66mm) wide, and its dual-coil layout is where the character comes from: it leans into powerful lows and low-mids while still pushing bright, cutting treble on top. That combination is exactly what you want when you’re trying to sit deep in a mix live but still need string definition to poke through during a fill or a solo.
What sets the Classic Bass series apart from a lot of stock soapbars is the extra air and clarity in the upper register — Bartolini extended the frequency range so you get more openness and detail at the top end without losing the low-end weight bassists actually rely on. Each pickup is cast in epoxy, which locks the coils down tight and kills unwanted microphonics and feedback, so you’re not fighting hum or handling noise on a loud stage.
- MK Soapbar dual-coil humbucker set: MK4CBC-T (neck) and MK4CBC-B (bridge)
- Passive Classic Bass series design with extended, resonant frequency range
- Powerful lows and low-mids paired with bright, articulate treble
- Epoxy-cast construction to reduce microphonics and feedback
- Bridge pickup dimensions: 4.24″ x 1.33″ (107.57mm x 33.66mm)
A solid pickup swap for players chasing a punchier, more defined low end without sacrificing top-end clarity on stage or in the studio.







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