Studio Electronics ATC-1 with all Filters and a switchable filter rack 1997

Studio Electronics ATC-1 Tone Chameleon (Full 4-Filter Bundle with Multi-Cartridge Switcher)

Up for sale is a rare, complete powerhouse studio setup featuring the Studio Electronics ATC-1 monophonic analog synthesizer. This specific listing is a collector's dream because it includes all four legendary hardware filter cartridges and the incredibly rare multi-cartridge filter switcher unit.

Instead of opening the back of the synth to manually swap boards, the included switcher allows you to mount all four filters simultaneously underneath the main unit and select your analog flavor on the fly.

What is Included

• Studio Electronics ATC-1 Synthesizer Unit: Serial number C 1422, handmade in the U.S.A.

• Studio Electronics Multi-Cartridge Filter Switcher: The hardware extension that sits cleanly beneath the synth chassis.

• TYPE MINI Filter Cartridge: The classic 24dB Moog transistor ladder filter for creamy, deep bass.

• TYPE S.E.M. Filter Cartridge: The 12dB Oberheim-style multi-mode filter for bright, reedy textures.

• TYPE 2600 Filter Cartridge: The aggressive, snapping ARP-style filter for punchy leads and sound FX.

• TYPE 303 Filter Cartridge: The iconic, squelchy Roland-style acid filter.

• System Patch Cable: The dedicated ribbon/extension link that connects the switcher directly into the main unit's rear cartridge port.

Condition and Aesthetics

The entire package is in beautiful cosmetic shape and has been well-preserved in a smoke-free environment.

The metal casing is structurally excellent with very minimal wear. The text labels for the power supply, MIDI, and CV/Gate jacks are crisp, bold, and perfectly legible.

All four cartridge casings are fully intact, clean, and feature excellent condition contact pins for seamless connectivity.

International buyers outside the European Union are responsible for any import duties, taxes, and customs clearance fees required by their respective countries.

Important Note on Voltage (EU vs. US Buyers)

Please note that this unit is currently configured for European 230V operation and is plug-and-play across Europe.

Because Studio Electronics built these units with high-quality transformer power supplies rather than modern digital switching supplies, it does not auto-switch voltages. However, the internal transformer is fully capable of running on US 115V power.

If you are buying this from the United States, you will need to:

1. Open the chassis to switch the internal voltage jumper/switch to the 115V position.

2. Swap the rear fuse from the current 0.6A (EU) to a 1.0A (US) fuse, as indicated on the back panel.

Alternatively, you can simply use an external step-up voltage transformer to run it on 230V exactly as it is configured right now.