Behringer RD-8 Rhythm Designer

What it is

The Behringer RD-8 Rhythm Designer is an analog recreation of the Roland TR-808, built from genuine transistor-based analog circuits rather than digital or ACB (Analog Circuit Behavior) modeling. Behringer unveiled the RD-8 at Superbooth Berlin in May 2018; units reached customers through late 2018 and into early 2019.

The RD-8 replicates all 16 instrument voices of the original TR-808: Bass Drum, Snare Drum, three tom/conga selector pairs (Low Tom/Low Conga, Mid Tom/Mid Conga, Hi Tom/Hi Conga), Rim Shot/Claves, Hand Clap/Maracas, Cowbell, Cymbal, Open Hi-Hat, and Closed Hi-Hat. Each instrument group has its own dedicated analog synthesis circuit. Behringer added individual voice outputs, full DIN MIDI (IN/OUT/THRU), and USB MIDI, none of which existed on the original 1980 hardware.

Specifications sourced from the Behringer RD-8 product page and owner's manual. Superbooth 2018 announcement date sourced from contemporary gear press (Synthtopia, CDM). Last verified: 2026-09-04.

Specs that matter

The RD-8 houses 16 analog instrument voices across 11 instrument-group positions (matching the original TR-808 panel layout). The 16-step sequencer supports pattern chaining and Behringer documents 16 patterns in sequential memory.

Connectivity: 11 individual 1/4-inch mono outputs (one per instrument group), confirmed from the RD-8 product page and manual. Connecting a cable to any individual output automatically removes that voice from the main mono mix, which is useful for external effects or multi-track recording. A mono mix output and a headphone output round out the audio connections. MIDI runs over full DIN 5-pin IN/OUT/THRU and USB type-B (MIDI data only; no USB audio). Power requires a 12V DC wall adapter (included); there is no battery option.

What's in the box

• RD-8 Rhythm Designer unit
• 12V DC power supply
• Owner's Manual

The original TR-808 and Behringer's analog recreation approach

The Roland TR-808 (1980) was discontinued in 1983 after approximately 12,000 units. Its purely electronic drum sounds were initially dismissed as inferior to acoustic recordings, but by the mid-1980s the 808 had become foundational to Chicago house and Detroit techno. By the 1990s it was inescapable in hip-hop; the 2010s trap era made its kick drum ubiquitous across mainstream pop. Original units that once sold for as little as $100 on the used market climbed to several thousand dollars.

Roland responded with the TR-08 Boutique in 2017, using proprietary Analog Circuit Behavior (ACB) technology: component-level digital modeling of the original analog circuits. Behringer took a different approach with the RD-8, replicating the TR-808 circuit topology using modern analog components directly rather than modeling the behavior in software. The underlying TR-808 circuit designs have been in the public domain for decades.

The RD-8 differs from the original TR-808 in practical connectivity: it adds individual outputs for all 11 instrument groups (the original had only limited individual outs for select voices), full DIN MIDI (the original had DIN sync but no MIDI), and USB MIDI. The original's physical knob-per-voice panel layout and step-button interface are retained.

Note: Claims about the specific transistor types used in the RD-8 bass drum circuit, and their sonic relationship to the original TR-808's transistors, should be verified against Behringer's technical documentation if direct circuit comparison is a research priority.

Sources

• Behringer RD-8 product page -- specifications, connectivity, individual outputs (URL confirmed 2026-09-04)
• Roland TR-808 -- Wikipedia -- production history, discontinuation, cultural legacy
• Behringer RD-8 owner's manual -- MIDI implementation chart, individual output routing (available from Behringer support pages)
• Superbooth Berlin 2018 coverage -- Synthtopia and CDM archives confirm May 2018 announcement