Behringer DC9 Dynamics Compressor Pedal, (Used)

The DC9 is a budget-friendly analogue compressor pedal that emulates the classic MXR Dynacomp circuit using an OTA design (LM13700), offering aggressive dynamic limiting rather than gentle studio-style compression. It operates via a sensitivity knob (threshold/compression level) and an output knob (make-up gain), along with true hard-wire bypass and a blue LED indicator for status and battery check. Power options include a 9 V battery or standard DC adapter, and it draws only about 9 mA of current.

Sonically, the DC9 delivers strong sustain and tightened dynamics, enhancing clarity and punch, especially on single-coil guitars or funk-style rhythms. At higher sensitivity settings, compression turns into a hard limiter with distortion levels around 2‑10% THD depending on input strength and a noticeable bass boost around 100 Hz when active, compared to subtle treble emphasis when bypassed or at lower gain settings. Some users report reduced low-end frequency presence in the compressed signal, keeping the tone focused but less full than higher-end compressors.

The DC9 is built from cast metal, has a small footprint, and boasts a reputation for delivering surprisingly effective performance given its low price—often under £30–40. However, its components are entry-level, and fine modulation or tone shaping is limited to internal trim pot adjustments rather than external control knobs. It’s best suited for home practice or as an introductory compression tool. Let me know if you’d like to compare it with higher-end compressors or bass-specific compression pedals.