This is an introduction to the ADDAC120 Headstock & Bridge by ADDAC System, available at Takazudo Modular.
The ADDAC120 Headstock & Bridge is a panel set -- a headstock (17HP) and a bridge (6HP) -- that forms the foundation of the ADDAC120s Four Strings series. It consists of a headstock fitted with four locking tuners and a bridge that anchors the other end of the strings, and it's the module for stringing physical strings across a Eurorack frame.
This product is available for purchase below.
Register your email and we'll let you know when it's back in stock.
We're accepting advance reservations. After we confirm your registration, we'll email you the details.
Takazudo Modular publishes manuals and related documents with Japanese translations. See the links below.
Product Photos
Overview
The ADDAC120 Headstock & Bridge is a pair of panels that form the basis for working with strings in the ADDAC120s Four Strings series. The headstock and bridge are sold as a single unit and anchor the strings at both ends.
The headstock side carries four locking tuners, so you can attach and tune strings using the same procedure as a guitar. Because they're locking tuners, mounting the strings is straightforward.
The strings themselves are chosen by the user, and tuning can be set freely. With an open construction that has no fretboard, there's enough clearance beneath the strung strings to place other modules under them. This lets you position other Four Strings series modules -- such as pickups and plectrums -- beneath the strings.
The panels are made of 2mm-thick stainless steel. They accommodate string gauges up to .055, and by enlarging the holes you can use even thicker gauges.
Included accessories are a string set (.010-.046), a bow arch attachment, and a small resonator. The bow arch attachment is a part that raises the middle two strings so that a bow can reach each string individually.
Specifications
Width
Headstock: 17HP
Bridge: 6HP
※ Sold as one unit (two panels)
Construction & Materials
2mm-thick stainless steel panels
Four locking tuners
Supported string gauge: up to .055 (enlarging the holes accommodates even thicker gauges)
Passive construction (no power required)
Included Accessories
String set (.010-.046)
Bow arch attachment
Small resonator
Background
The ADDAC120s Four Strings series is a group of modules built around the idea of using physical strings as a medium for creation. According to ADDAC System's official announcement, the series is conceived as an open creative canvas that encourages experimentation and discovery through diverse approaches to strings and sound generation.
The ADDAC120 Headstock & Bridge is the starting point of that series. By stringing strings between the headstock and bridge and placing other modules beneath them, you build up a string-instrument system on the Eurorack format.
Small Resonators
Although quite simple, the included small resonators are extremely effective at adding harmonics to non-wound strings. For every resonator attached to a string a new partial is added, and placing more pieces adds more partials, which makes the tone increasingly complex. The tuning of each harmonic is defined by the position of the resonator on the string. The resulting sound can be quite surprising, as it very much resembles a bell-type sound.
ADDAC120s Four Strings Series
The Four Strings series is available both as individual modules and as bundle systems. Our shop carries only the frameless ADDAC120BS Strings Basic System. If you'd like a larger setup, please consider adding other modules from the series separately.
Modules / Frames
A matched pair of Headstock (17HP) and Bridge (6HP) panels with 4 locking tuners for easy string installation. Passive stainless-steel construction raises strings high enough to fit other modules underneath. Includes a string set (.010–.046), bow arch attachment, and small resonators.
A 10HP humbucker pickup module with an integrated pre-amplifier delivering synth-level output. Features TONE and VOLUME knobs plus a LOW/HIGH gain switch. Height-adjustable via mounting screws; the pickup can be removed for handheld use.
A 14HP quadraphonic pickup with 4 independent coils — one per string — each with its own pre-amplifier, VOLUME knob, and output jack (STRING 1–4), plus a MONO MIX output. All coils are hand-wound with Alnico 5 slugs, 44AWG polyurethane wire, and ~7.4kΩ per coil.
A 14HP plectrum module with one servo per string, triggerable via push-button, gate, or MIDI (USB + TRS). Offers Pluck mode (~20° swing to pluck the string) and Harmonic mode (~10° tap for harmonics). Up to 3 units can be daisy-chained.
A 10HP servo-driven mute module inspired by the Fender Mute (Jaguar/Bass VI). A foam pad lowers onto the strings to create a gentle dampening — a distinct tonal character different from palm muting. Passive module; controlled by an ADDAC124 Plectrums servo.
A 10HP module with a 7,000 RPM brushless motor spinning 4 magnets. When the motor RPM matches a string's resonant frequency or harmonics, the rotating magnetic field excites the string — similar to using a bow on an electric guitar. Speed is controlled by a SPEED knob and CV input.
A 16HP mechanical harness and sliding rail for a standard Ebow. The included Ebow is modified with the "PianoBow" mod (feet sanded down) so it slides freely below all strings without contact. Height is adjustable via thumb screws. Passive module; no power required.
Four Strings Systems (Bundles)
Bundle pricing works out cheaper than buying the modules individually. Since the modules included in a bundle are essentially required to produce sound, we recommend starting from a bundle and adding other modules to it.
| Product | Set price (incl. tax) | Total of unit prices (incl. tax) | Bundle discount |
|---|---|---|---|
| ADDAC120BS Strings Basic System | ¥80,800 | ¥84,400 | -¥3,600 |
About ADDAC System
ADDAC System is a modular synthesizer maker based in Portugal.
Their lineup is built on solid, no-nonsense modules that make the most of analog character. At the same time, they have released plenty of inventive modules that bring digital technology into the mix in a tasteful way — flexible CV-to-MIDI converters, deeply controllable granular processors, and more.
That concludes the introduction to the ADDAC120 Headstock & Bridge.
The ADDAC120 Headstock & Bridge is the foundational module for working with strings in the ADDAC120s Four Strings series. Consider it the starting point when building a string-instrument system with this series.
Register your email and we'll let you know when it's back in stock.
We're accepting advance reservations. After we confirm your registration, we'll email you the details.
Takazudo Modular publishes manuals and related documents with Japanese translations. See the links below.
We hope you found this helpful.