Schecter Charles Berthoud CB-4

I came to this bass looking for a compact, slap-ready instrument with clear voice and practical onstage features, and the California II TM4 Ida Nielsen does most of that job very well. From the birdseye maple fretboard to the active/passive electronics and the Ida-specific pickup options, it feels like a player-designed tool for rhythm and lead bass duties alike.

First Impressions

The moment I picked it up I noticed the balanced weight and the sleek soft aged black finish - it looks sharper in person than photos suggested and the matched headstock keeps the aesthetic tidy. The neck felt familiar but a touch more authoritative than other 34-inch C-shapes I've used - it has a slightly beefy mid-profile that makes slapping and thumb techniques feel very controlled. Hardware and details like the fluorescent side dots and the thumb rest immediately hinted at a player-first design rather than a showroom-only instrument.

Design & Features

Sandberg built this as an Ida Nielsen signature, so the spec list reads like it was tuned for funk and rock - alder body, bolt-on maple neck, birdseye maple fretboard with 22 frets and fluorescent side dots for stage visibility. The electronics are a Sandberg 2-band preamp with switchable active/passive operation and an Ida pickup selector, pairing a Sandberg TM blacklabel humbucker and a J-style single coil for flexible tonal combinations. Practical touches include vibration treatment to kill sympathetic buzz, a thumb rest, a D-tuner for quick drop-D on the fly, and a padded gig bag included in the package.

Playability & Usability

Action out of the box was play-ready with a low-to-medium setup that let me dig into slap without fretting about fret buzz, and the fretboard felt smooth and fast thanks to the birdseye maple. The neck profile gave me a good grip for thumb-position playing and quick moves up the neck, yet I never felt cramped when switching to fingerstyle or palm-muted parts. The fluorescent side dots are subtle but genuinely helpful under dim stage lights - a tiny but smart ergonomic win.

Tone & Electronics

Tonally this bass is exactly the kind of hybrid I was hoping for - the humbucker adds tight low-end and grit when pushed, while the single coil gives a splashier, more percussive character that sings in slap and funk contexts. The 2-band Sandberg preamp is musical rather than clinical - boosting mids and lows fattens things up without sounding artificial, and rolling back into passive mode produces a rawer, more vintage vibe I appreciated in simpler arrangements. The Ida pickup-selector gives convenient preset-like options that made quick dialing-in between songs painless.

Real-World Experience

I used the bass in rehearsals and a few small live sets and it held tune perfectly, the D-tuner was a real convenience for staging, and the included gig bag was adequate for quick transport. On a PA the bass cut through a full band and the humbucker gave nice roundness for low-end anchoring while the single coil settings helped articulate slap lines so they read clearly in the mix. The vibration treatment is subtle until you compare to an untreated instrument - it reduces sympathetic ringing and made longer sets more forgiving.

The Trade-Offs

This is not a lightweight instrument - expect a substantial feel compared to carved ultralight bodies, which some players will love and others may find fatiguing on long standing gigs. The gold/aged hardware and finish choices are attractive but will show wear differently than chrome, so if you want a pristine stage look you may need extra care. Also, while the electronics are versatile, players who want deep multiband sculpting will miss an onboard 3-band EQ or parametric options - this is lean and musical, not lab-grade tone shaping.

Final Verdict

The Sandberg California II TM4 Ida Nielsen is a thoughtfully specified signature bass that nails funk-friendly playability and flexible tones without overcomplicating the control set. I would recommend it to players who want a reliable, stage-ready bass that handles slap, groove, and rock duties with warmth and clarity - especially those who value player-oriented extras like the D-tuner and fluorescent side dots.