The Bacci Tosca, a fully hollow electric guitar in Italian walnut
Design Blog 12 November 2026 6 min read

The guitar that breathes.

Bruno Bacci in his Tuscan workshop
Bacci GuitarsPescia, Tuscany
Fig. 01 · The Tosca in Italian walnut, one of fifty
01A sound that did not exist

Ten years, and then eleven months.

The Tosca began as a sound Bruno Bacci could hear and could not yet build. He gave himself ten years to find it, and eight prototypes along the way, before a single guitar carried the name.

It is a fully hollow electric that resonates like an acoustic, with custom Kloppmann pickups that capture the body without mud. Deep, dynamic and alive, and once the sound was settled it took eleven months to build each one.

I was ready to destroy everything, because that sound had never existed before.

Bruno Bacci, Bacci Guitars
The line

Fifty, then it closes

The Tosca is a limited edition of fifty numbered guitars. Bruno could make more. He chooses not to, because a limit is what gives the work its gravity.

02The question

Is there anything else we can take off?

The design question that drove the Tosca was a subtraction, not an addition. Years went into material, proportion and shape, all in service of removing everything that was not sound.

The structure is a skeletal frame, built around the flow of vibration. The voids are strategic, mass taken away to open controlled air chambers. The arc of the body is curved for a playing position that stays comfortable for hours.

The architecture carries a name of its own, Bacci and the designer Eri Goshen, and it is the reason the guitar sounds the way it looks: open, resonant, and nothing in the way.

This one made me stop talking.
Bruno Bacci

Eight prototypes, from 2016 to 2018, each one a step in taking mass away without losing the voice.

An early Tosca body being shaped, 2016
01 First shaping, 2016
The raw hollow Tosca body
02 The raw body
Carving the Tosca chambers on the bench
03 Carving the chambers
Fitting the Tosca neck by hand
04 Fitting the neck by hand
The Tosca headstock taking shape, 2017
05 The headstock takes shape
Bridge and pickups on the Tosca
06 Bridge and pickups
The Tosca strung up on the bench
07 Strung up
An early Tosca against the workshop wall
08 Against the wall
03Two specialists

When you refuse to settle, you call people who do the same.

Ten years of prototypes do not end with a phone call to a vendor. The Tosca was finished with two specialists who had spent forty years refusing to settle. Michael Kloppmann wound fourteen pickup versions for it. Eri Goshen spent seven years on the subtractions and proportions of the body.

Eri Goshen, who shaped the Tosca body, at his bench
Fig. 02 · Eri Goshen, who shaped the body
Bruno Bacci holding the Tosca headstock
In the hand, 2018
Carving the Tosca body on the bench
On the bench
Detail of the Tosca bridge area
The bridge area
04Three woods, three voices

One shape, three ways to speak.

The Tosca is offered in three woods, each chosen for a character of its own. The shape stays the same. The voice changes with the tree.

The Tosca in Italian walnut
Noce, walnut
The Tosca in spalted maple
Acero, maple
The Tosca in spruce
Abete, spruce
01
Tosca Noce, walnut

Dark, warm, compressed

Selected Italian walnut, responding fast and controlled. The attack has a sandy grain that gives the sound character, the midrange stays focused, and every bend and vibrato lands precisely where you put it.

02
Tosca Acero, maple

Bright, articulate, transparent

A mahogany body with an Italian spalted maple top, tight and direct. The attack has snap and precision, and every note separates cleanly, even under gain. Each spalted top is naturally patterned, so each one is distinct.

03
Tosca Abete, spruce

Open, resonant, dynamic

A pearwood body with a spruce top, lively and airy. The attack comes quick, the midrange stays warm and balanced, and every dynamic shift from soft picking to hard attack stays immediate.

Materials

Chosen one top at a time

The woods are selected by hand, matched to the chambering, and voiced with a Kloppmann set made for that body. A rare top is the voice, waiting to be freed.

05Hear it

Three pickup positions, three worlds.

The Tosca was recorded across its three pickup positions, each with a player and a piece chosen to suit it. The neck position runs ambient and jazz, the middle funk and fusion, the bridge a slow blues.

The full session, with the amp, the pedals and the microphones all named, lives on the Tosca page, recorded at Studio Matteini's.

NNeck · ambient, jazz

Farewell, improvised by Tommaso Sturlini, through a Walrus Audio Slö and a Pigtronix Echolution 3.

MMiddle · funk, fusion

Grip & Rip, no effects, straight into the amp.

BBridge · blues

Slow Burn Blues, through a Vemuram Jan Ray.

The sound

Listen to all three

Each position was captured through a Brunetti Singleman 35, with a Shure SM57 and an AKG P120 on the cabinet. The full demo plays on the Tosca page.

The guitar that breathes like a violin.

On the Tosca
06The spec

Standardised where it helps, custom where it counts.

The parts that do not shape the voice are fixed and dependable. The parts that do were made for this guitar.

BuildFully hollow, skeletal frame
Edition50 numbered, 45 remain
PickupsKloppmann custom mini-humbuckers
Configuration22 MH-MH, custom voiced
FretsJescar stainless steel, 55090
TunersK-Tar ultralight locking
FretboardEbony, figured ebony on request
CircuitCustom, open to acoustic evolution
DesignBacci and Eri Goshen
Build timeEleven months
OriginPescia, Tuscany
WarrantyLifetime, from Bruno
Commissions

Claim one of the fifty

Forty-five of the fifty remain. Each is numbered, built in eleven months, and voiced around the wood you choose.

Every Tosca is designed, built and set up by Bruno, one at a time, in Pescia.

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