Used Doepfer A-151 V2 Modular Synthesizer Rackmount

This Doepfer A-151 V2 Quad Sequential Switch is a classic Eurorack utility module designed to route signals in creative and unpredictable ways. It allows a single input to be switched between up to four outputs or multiple inputs to be routed to a single output, with both manual and voltage control available. The updated V2 version adds improved switching behavior and expanded functionality while keeping the familiar, no-nonsense Doepfer layout.

This module opens up a huge range of patching possibilities, from stepped melodies and evolving modulation paths to complex rhythmic variations. Sequential switches like the A-151 are a favorite among modular users because they can turn simple sources into animated, shifting patches without adding extra oscillators or envelopes. Doepfer’s reputation for rock solid engineering and straightforward design makes this an especially reliable choice for both new and experienced Eurorack users.

This module has been tested thoroughly in store to ensure proper operation. Please take a close look at the listing photos for full condition details, as minor cosmetic wear may not be described in detail. We buy, sell, and trade used gear every day, so feel free to reach out if you are looking to trade toward something new or expand your modular setup.