This is the product detail page for the ADDAC120BS Strings Basic System by ADDAC System, available at Takazudo Modular.
The ADDAC120BS Strings Basic System is an entry-level bundle from the ADDAC120s Four Strings series. It includes three modules: the headstock & bridge, the humbucker pickup, and the rotary exciter. No frame is included, so it's a configuration meant to be installed into an existing Eurorack case.
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Overview
The ADDAC120BS Strings Basic System is a three-module set designed as an entry point into the ADDAC120s Four Strings series.
It's a modules-only configuration with no frame, making it well suited for adding to an existing Eurorack system or for a setup using your own frame.
Configuration
This bundle includes the following three modules:
ADDAC120 Headstock & Bridge — A set comprising a headstock panel with four locking tuners and a bridge panel that anchors the strings at the opposite end (17HP + 6HP). Made of stainless steel. Supports string gauges up to 0.055.
ADDAC121 Humbucker — A humbucker pickup module with a built-in preamp (10HP). Features a TONE knob, a VOLUME knob, and a LOW/HIGH gain switch.
ADDAC126 Rotary Exciter — A module whose 7000 RPM brushless motor spins four magnets to excite the strings at their resonant frequencies (10HP). Includes a SPEED knob and CV input.
Since this is a frameless, modules-only configuration, a Eurorack case and power supply are required separately.
Included Modules
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 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.
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)
An entry-level bundle including ADDAC120 Headstock & Bridge, ADDAC121 Humbucker, and ADDAC126 Rotary Exciter. Modules only; no frame included.
This bundle is offered at a set price that's more economical than buying the three modules individually.
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 product details for the ADDAC120BS Strings Basic System.
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.