Model 2600

Authentic

Essence

"A semi-modular synthesizer based on the legendary ARP 2600"

A meticulous 1:1 scale replica

Classic circuitry with expanded new connectivity

At Antonus, we use the original circuit with classic through-hole components and meticulously matched parts, ensuring the authentic sound and soul of the original units. Maintaining the original design path is one of our big commitements that is why we returned to the original submodule building technique.

Our circuits are faithful replicas, we have achieved full retro-compatibility between the Antonus 2600 OS and the vintage ARP 2600. That is why you can house original submodules inside an Antonus unit, or use our submodules to restore a vintage classic.

Analog Philosophy

These classic technologies and artisan techniques require significantly more effort compared to modern mass-production methods.

We distance ourselves from industrial manufacturing for our instruments; we believe this work deserves a unique level of dedication and love.

The 21st Century 2600

We integrated two key features to ensure seamless compatibility with modern studios and setups: CV/GATE, MIDI Duophonic Interface

MIDI Duophonic Interface

This interface enhanced the features of the 2600 with a MIDI Thru port and a dedicated MIDI Learn button for effortless channel configuration.

To preserve the instrument’s vintage integrity, the interface contained a small, isolated daughterboard.

Note that, It represents the only digital component and SMT board in the entire unit—a necessary choice due to the specialized nature of high-precision Digital-to-Analog conversion.

Also we added a Balanced Output Interface, located on the right side of the instrument, it features dual XLR/Jack connectors for direct, noise-free connection to professional mixers and audio interfaces using balanced lines.

Offering these modern outputs, we preserved the traditional front-panel 3.5mm mini-jack outputs found on the original ARP 2600.

This design provides total flexibility for your studio routing, allowing you to connect the main outputs via:

3.5mm Mini-Jack: (Unbalanced) Traditional front-panel connection.
6.3mm (1/4″) Jack: (Balanced) Professional line output.
XLR Connectors: (Balanced) Standard for studio and stage reliability.

Style

Tolex vs. Metal

The 2600 OS is available in two different cabinet finishes, designed to match your studio aesthetics and mobility needs without compromising the inside.

Classic Tolex case : A tribute to the original 1970s icon. Wrapped in Tolex, this version is perfect for those seeking the vintage feel of the classic ARP 2600. Their transportable nature it´s perfect for touring and live performances.
Metal Case: A modern, sturdy, and more affordable alternative. Finished in a professional textured black paint, this steel enclosure offers a compact and elegant footprint for the contemporary studio. This case it´s design more for recording studios.

Tolex Case

Metal Case

Panel Options

Customize the look of your 2600 OS by selecting your preferred panel finish:

Classic Grey: vintage look with a smooth, classic feel based on the early 2600 units.
Orange & Black: The high-contrast, iconic 80’s 2600 latest series look

Available for both Tolex and Metal cabinet versions

Videos

Samples

Technical Specifications & Key Features

Original 1:1 Scale: an original-size replica of the legendary classic 2600.
Premium Cabinetry finish: A faithful cabinet detailing, featuring original-spec cuts and authentic metal hardware.
Classic Aesthetics: Finished with two classic panels.
Vintage Filtering: Features the VCF 4012 (transistor ladder) filter, delivering the definitive 70s sound.
Classics Oscillators: Equipped with the famous 4027-1 VCOs.
Spring Reverb: Long spring reverb tank with an optimized circuit to keep down static noise.
Improved Knobs: Newly designed knobs that match the original square shape but feature a translucent core to allow light pass-through.
Customizable Illumination: brightness is adjustable via a front-panel trimmer. Users can disable the lights entirely for a 100% original vintage look.
Human-Scale Electronics: Built entirely with Thru-hole components. We follow original circuit names and numbering, ensuring the unit is easily serviceable or modifiable with traditional tools. Schematics remain compatible between the ARP 2600 and Antonus 2600 OS.
Balanced outputs: Integrated balanced output interface featuring both 6.3mm Jack and XLR connectors.
New MIDI Control: A dedicated MIDI-CV duophonic interface manages digital data and converts it into pure analog CV + GATE signals.
Universal Power Supply: Upgraded power supply with the traditional linear regulator stage and the last technology for make it universal compatible. This ensures the perfect balance between sound and pitch stability and original behaviour with the best ease of connection.
Premium Component Seating: All Thru-hole ICs use high-grade turned sockets (the gold standard) for long-term reliability and easy future maintenance or mods.
Interchangeable Submodule Design: Built using the original submodule technique with matched components and thermal coupling. Unlike original epoxy-encapsulated modules, ours are non-potted (no epoxy), making every component accessible for repair. Antonus submodules are fully compatible for restoring or repairing vintage units.