Sandberg Basses TT5 3-Tone Sunburst Masterpiece

Masterpiece is the top of Sandberg’s ageing programme, and it is not the same job as the tiers below it. Soft Aged and Hardcore Aged are finishing processes. Masterpiece is a single craftsman taking one instrument and writing a thirty-year history into it by hand — where the forearm sat, where the belt buckle caught, where the case bit into the lower bout on the way in and out of a van a few thousand times. Look at this one closely and the wear tells a story that makes sense: heavy through to bare alder on the upper bout and the back, a hard patch below the bridge where a right hand lived, checking and dings that fall exactly where you would expect them and nowhere you wouldn’t.

Underneath the relicing this is a California TT5 — Sandberg’s five-string take on the two-single-coil Jazz format, built in Braunschweig to the same standard as everything else that leaves the shop. 3-Tone Sunburst is the right colour for this treatment, because the sunburst is what wears: the black outer ring breaks up first and goes yellow-amber at the edges, the red ring holds, and the honey centre is left almost untouched. You get three tones of finish and three stages of ageing on the same body, and there is not another one exactly like it anywhere.

The body is alder, which is the wood Sandberg uses under every aged finish, and it is the correct one for a bass built around two single coils. Alder is the most even-handed timber in this family: a firm, fast low end that doesn’t bloom, a midrange sitting far enough forward to hold a line against loud guitars, and a top end that stays open without turning brittle. It doesn’t stamp a character of its own onto the sound the way ash scoops it or mahogany thickens it — it gets out of the way, so what you hear is the pickups and the neck rather than the lumber.

On a Masterpiece there is more to it than the wood choice. The body and neck go through Sandberg’s thermo treatment and vibration treatment before any finish goes on. Thermo treatment drives the residual moisture and some of the sugars out of the cells, which is what happens to a body over decades anyway — the wood ends up lighter, more dimensionally stable, and less inclined to move with the weather. Vibration treatment does the other half of the job, working the instrument at frequency so the fibres settle the way they would after years of being played. The audible result is what people mean when they talk about an old bass being “opened up”: faster attack, more sustain behind the note, and a fundamental that arrives already formed instead of taking a beat to build. The varnish over the top is also thinner than on a standard finish, which lets the body move more freely rather than being held in a shell.

The neck is Canadian hard rock maple, bolted on with six screws rather than the usual four. That extra pair is not decoration: it spreads the clamping load across the heel, keeps the joint from working loose over years of seasonal movement, and couples neck to body more tightly, which you hear as a firmer fundamental and a little more sustain. It is carved to a C profile — full enough to fill your hand, not so deep that it slows you down — and the back has been worn and sealed rather than left glossy, so it stays fast when the room gets hot and your hand gets damp. This is the part of a relic job that actually changes how an instrument plays, and it is done properly here.

The fingerboard is Pau Ferro with abalone dot inlays. Pau Ferro sits between rosewood and ebony in both density and voice: harder and tighter-grained than rosewood, so the attack has more definition and the note speaks a fraction faster, but without the glassy top end that ebony can bring. On a bass you can drop into fully passive that matters, because there is no preamp waiting to add clarity back in — the board has to supply it. There are 22 frets in 2.7 mm wire over a 14″ radius, flatter than a vintage Jazz board and flat all the way up, so you can set the action genuinely low without the top register choking out. The 34″ scale and 44.6 mm nut keep the five-string feeling like a Jazz bass rather than a wide-necked instrument you have to negotiate.

The pickups are Delano JMVC FE/M2 single coils in both positions, wound in Germany. Delano wind tighter and more consistently than most, and the JMVC is their reading of the classic Jazz single coil rather than a modern reinvention of it: even output right across the five strings, a vocal midrange with real growl in it, and a top end with air rather than hiss. Solo the neck pickup and you get round, fat, almost P-adjacent weight. Solo the bridge and you get the nasal, mid-forward bark that cuts through a horn section without touching an EQ. Open both and the coils hum-cancel each other into the scooped, springy both-pickups sound that has carried more records than anyone can count.

The four knobs on the aged control plate are Volume, Balance, Treble and Bass, running a Sandberg 2-band EQ — and the whole preamp switches out, dropping the bass into fully passive operation with a passive tone control. That is not a gimmick you use once. Active, you have boost and cut at both ends: enough treble to make a fresh set of rounds sing for slap, enough bass to fill out a sparse trio without leaning on the amp. Passive, the battery leaves the signal path entirely, the output softens, and you get the slightly compressed, springy response that only a passive Jazz bass has. Two genuinely different instruments, one switch — and if the battery dies mid-set it costs you a knob rather than the gig.

The fifth string is where the build quality earns its keep. A low B on a 34″ scale only works if the neck is stiff, the joint is tight and the bridge has mass under the saddles, and all three are true here — the B is firm and pitched rather than woolly, and it tracks cleanly when you dig in. Sandberg’s own bridge adjusts string spacing between 18 and 19.5 mm, so you can set the strings where your right hand actually wants them instead of where the factory left them, and the lightweight tuners keep mass off the headstock so the bass hangs level on a strap over a long set. All the hardware has been aged along with the finish: dulled chrome, tarnished screws, a control plate that has lost its shine in the places a forearm would take it.

This is the bass for the player who wants a vintage five-string that doesn’t exist — because a real 1965 Jazz Bass never had a B string, and every modern attempt at one either sounds too clean or plays too stiff. The Masterpiece treatment gets you the look and the settled, opened-up feel of an instrument that has been worked for thirty years, the Delano and Sandberg circuit gets you a passive vintage voice and a modern active one from the same body, and the 34″ scale keeps it familiar under the hand. One week of one luthier’s time went into the finish alone, which is why no two Masterpiece basses are the same and why this 3-Tone Sunburst is the only one of its kind on our floor. It ships in the Sandberg gigbag.