Keeley Electronics RK2000 Funk Siren Freeze Hold Delay Effects Pedal

The Keeley RK2000 Funk Siren is a freeze hold delay and modulation workstation built for players who want studio rack textures on a compact pedalboard. Inspired by classic early 80s digital delay, it delivers gritty 12-bit repeats, infinite sustain, expressive modulation and deep control, all wrapped up with modern conveniences like tap tempo, presets and MIDI.

Whether you are creating warped lo-fi soundscapes, tight rhythmic echoes, shimmering chorus or wild siren-style pitch sweeps, the RK2000 gives you the tools to sculpt, capture and repeat every moment. With stereo operation, selectable output modes and flexible switching, it is equally at home on experimental boards, ambient rigs and precise live setups.

Vintage-Inspired 12-bit Delay Tone

At the heart of the RK2000 is a 12-bit digital delay circuit inspired by the legendary 1983 DM2000 rack unit. This gives the repeats a characterful, slightly grainy texture that sits beautifully in a mix, avoiding the sterile feel of some modern delays. The Time, Feedback and Blend controls make it easy to dial in everything from short slapback to long, evolving echoes that retain clarity while still feeling musical and vintage-flavoured.

Freeze and Hold for Infinite Ideas

The dedicated Hold footswitch unlocks the pedal’s freeze and sampling capabilities, allowing you to capture a chord, note or noise and sustain it indefinitely. You can then play over the top, twist the Filter and Depth controls, or change delay settings without losing the held sound. This makes the RK2000 a powerful creative tool for ambient swells, drones, intros, outros and live looping-style textures without needing a separate looper.

Deep Modulation and Stereo Movement

With wide-range modulation on tap, the RK2000 moves effortlessly between subtle chorus, flanging and more extreme vibrato-style effects. The Rate and Depth controls let you fine-tune the movement, while the Filter control helps you shape the tone of the repeats. Switchable Normal and Ping-Pong stereo modes mean you can send delays bouncing between left and right channels, adding width and motion to your sound in both studio and live environments.

Modern Control, Presets and Connectivity

The RK2000 is designed to integrate seamlessly into complex rigs. Tap tempo keeps your delay locked to the track, while selectable true or buffered bypass lets you choose how it behaves in your signal chain. Onboard preset recall and up to 72 presets via MIDI mean you can store and instantly access your favourite sounds for different songs or sections. With an expression input, stereo outputs and multiple output modes, it offers the flexibility modern players demand.

• 12-bit Digital Delay Engine - The RK2000’s 12-bit delay circuit, inspired by an iconic 1983 DM2000 rack unit, delivers characterful, slightly gritty repeats that feel musical and organic. This vintage-voiced response helps your echoes sit naturally in a mix, ideal for players who want classic rack tones in a pedal format.
• Dedicated Freeze Hold Footswitch - A separate Hold footswitch lets you capture and sustain sounds indefinitely without interrupting your playing. This opens the door to drones, pads and experimental textures on the fly, turning the pedal into a performance instrument as well as a traditional delay.
• Stereo Operation with Selectable Modes - With dual 1/4" outputs and Normal or Ping-Pong stereo delay modes, the RK2000 can create huge, spacious soundscapes. Whether you want centred repeats or bouncing echoes that move across the stereo field, it adds depth and dimension to any stereo rig.
• MIDI and Preset Control - Onboard preset recall and support for up to 72 presets via MIDI make the RK2000 a powerful choice for structured live sets and complex studio sessions. You can switch between radically different delay and modulation setups instantly, keeping your sound consistent and controllable from song to song.

General

• Model: RK2000 Funk Siren
• Type: Freeze Hold Delay Effects Pedal
• Circuit: 12-bit digital delay (inspired by 1983 DM2000 rack unit)
• Made in: Oklahoma, USA

Delay and Modulation

• Delay Features: Freeze / Hold function, Tap Tempo
• Stereo Delay Modes: Normal, Ping-Pong
• Modulation: Wide-range modulation for chorus, flanging and vibrato-style effects

Controls

• Blend
• Feedback
• Filter
• Depth
• Input
• Rate
• Time

Switching and Presets

• Bypass: Selectable True or Buffered
• Tap Tempo Footswitch
• Dedicated Hold Footswitch
• Preset Switch
• Presets: Onboard preset recall
• MIDI Presets: Up to 72 presets via MIDI
• Switching: Soft-touch relay switching

Connectivity

• Input: 1 x 1/4"
• Outputs: 2 x 1/4" (stereo)
• Expression Input: 1 x 1/4"
• MIDI Compatible

Output Modes

• Wet + Dry
• Wet Only

Power

• Power Requirement: 9V DC (centre negative)
• Current Draw: Approximately 150mA

Hardware

• Top-mounted Jacks