Behringer RHYTHM DESIGNER RD-8 vs Behringer RD-78

At a glance

Specifications compared

Two very different classics

The RD-8 recreates the TR-808: the deep, long kick, the snappy snare, claps, cowbell and congas behind decades of hip hop, electro and techno. The version Amazon UK lists describes the recreated 662 chip, which marks it as the MkII, released in June 2021. Behringer calls that chip the main difference from the MkI; side-by-side tests found the change subtle.

The RD-78, released in February 2025, recreates the CR-78 CompuRhythm, which predates the 808. It was designed as a preset rhythm machine for musicians, and its soft, slightly toy-like sounds are all over early-1980s pop records. Behringer's version has 15 analogue voices with a lot of Latin percussion (guiro, maracas, tambourine, claves, cowbell, conga and bongos) plus a clap, which the CR-78 never had.

Sound and how much you can shape it

This is the biggest practical gap. The RD-8 gives you real control: kick tune and decay, snare tone and snappy, clap offset and more, plus a Wave Designer for attack and sustain and a 12 dB low-pass/high-pass filter with resonance. Sound On Sound found its snare indistinguishable from a pristine 808 and its kick strong when tuned down. Owners mention stiff knobs and a fairly low output level.

The RD-78 has almost none of that. You get ten level controls, an accent, a balance control between the low and high sounds, and a master volume. There is no tuning, no decay and no effects. That is faithful to the CR-78, and it suits the machine's purpose, but it means the sound is largely what it is. One owner put it at about 80 per cent of the real thing; Synthtopia's review called it a superbly cheesy alternative to 808 and 909 sounds, meant as praise.

Programming versus presets

If you like to program beats, the RD-8 is far ahead. Its sequencer runs from 1 to 64 steps, stores 16 songs of 16 patterns, and adds swing, flam, step probability, step and note repeat, autofill and Loop Overlay for per-track lengths. None of that existed on the original 808.

The RD-78 works the other way round. Its heart is 34 preset rhythms with variations every 2, 4, 8, 12 or 16 bars, seven fills, breaks, fade in and fade out, and a random pattern function. You can program your own on 16 steps (32 user patterns and 12 programmable tracks, in 4/4, 8/8, 3/4 or 6/8), but there is no listed swing, flam or probability. The original RD-8 also shipped without preset patterns, so if you want a groove the moment you switch on, only the RD-78 delivers that.

Connections and size

Both have plenty of individual outputs, but in different formats. The RD-8 has 11 outputs on full-size 1/4-inch jacks (plugging in removes that voice from the main mix), a return input and three trigger outs, one fixed to accent, for modular and vintage gear. The RD-78 has 10 outputs on 3.5 mm jacks, which suits a compact or Eurorack-adjacent setup, and no trigger outs.

The RD-78 gains two footswitch inputs (start/stop and variation), which is useful if you play guitar or keys along to it. Both have MIDI, USB MIDI (not audio) and sync in/out.

Physically, the RD-8 is a big box: 498 mm wide and 3 kg, on an 18 V adaptor. The RD-78 is a much smaller desktop unit running on 9 V.

Our verdict

Choose the RD-8 if you produce hip hop, electro, techno or anything built on 808 sounds, and you want to shape each drum and program detailed patterns. It is the deeper, more flexible instrument and the better studio centrepiece.

Choose the RD-78 if you want vintage preset grooves you can start with one button, love the early-1980s CR-78 sound, or want a compact rhythm companion to play along with, controlled by footswitch. It is cheaper and smaller, but much less editable.

Many producers end up with both, because they do not overlap much. If you can only have one and you program your own beats, it is the RD-8.