The Keeley Electronics Realizer Reverberator 21st Anniversary is a compact reverb pedal that also produces modulation, covering two effect types in one box. RockBoard's PedalPedia describes it as "the perfect reverb pedal for shoegaze and ambient guitarists who have already found their perfect fuzz tone", positioning it for players who want big, atmospheric reverb behind an already-set drive sound1.
The circuit is based on the left side of the Loomer Workstation, Keeley's larger multi-effect, so the Realizer takes the reverb half of that pedal and puts it in its own enclosure1.
Finish and design
The 21st Anniversary edition carries a teal and purple flip flop finish with minimal graphics, chrome knobs and switches. RockBoard's PedalPedia notes it is similar in appearance to the 2nd Anniversary Loomer, marking it out as part of the company's anniversary Custom Shop line rather than its standard range1.
Power
The Realizer runs on 9V DC, center negative, and draws 75mA. That current draw means it needs its own supply output or a supply with enough headroom, rather than being shared casually on a daisy chain with low-current pedals1.
At 75mA, the Realizer draws more current than many basic reverb pedals, so plan your power supply accordingly.
Where it sits in Keeley's reverb range
Keeley builds several reverb-centered pedals, and the Realizer is the analog, anniversary-edition entry aimed at shoegaze and ambient tones. Players comparing it with other Keeley designs may also look at the Keeley Gold Star, the Keeley Hooke Reverb, the Keeley Nocturner or the Memphis Sun Lo-Fi Echo Reverb Double Tracker, or browse the wider field of reverb pedals1.
Videos
Pedal Empire
Christian Talac
Lower Earth Effects Compendium
Sources (1)
- Realizer Reverberator 21st Anniversary by Keeley Electronics, RockBoard PedalPedia, 2026








