Boss RE-20chat_bubble_outlineFrom real comments

Owners consistently praise the organic, warm delay character and tone control. Multiple long-term owners describe the RE-20 as their favorite or best delay pedal, citing its convincing self-oscillation and organic feel compared to newer digital delays. A key point raised repeatedly is that the bass and treble knobs shape the delay repeats themselves, not just the reverb, letting players dial in anything from dark and warm to bright and cutting - a feature several call a major selling point over competitors.

The reverb is a consistent weak spot most users work around or ignore. Several commenters state plainly that the onboard reverb is mediocre, mono, and spring-like, with some turning the tone all the way down or avoiding it entirely. One notes there's no way to leave reverb on constantly while switching delay separately, calling the always-linked design annoying. Despite this, most agree the echo/delay side more than compensates, making the pedal worthwhile even with a so-so reverb.

Extended features exist but are buried behind an awkward hidden menu. Accessing modes like Long Mode or saturation-on-dry-signal requires unplugging power, turning a knob, and holding the tap pedal while repowering - a process users call a 'faff' and not straightforward. There's also no power switch, raising concern about repeated cable pulling. A few units reportedly develop mode-selector or tempo-retention glitches, though most owners report years of trouble-free reliability.