What it is
The Roland TR-8S Rhythm Performer is a full-size desktop drum machine combining Roland's Analog Circuit Behavior (ACB) modeling with per-track sample playback. Roland introduced the TR-8S as the successor to the 2014 TR-8, adding the ability to assign custom WAV files to any track alongside the built-in ACB voice library.
Release date note: Roland's MIDI Implementation Chart for the TR-8S is dated February 20, 2018 (version 1.02), confirming a 2018 release. Last verified: 2026-09-04.
Specifications sourced from Roland's TR-8S spec page and the TR-8S MIDI Implementation Chart (Feb 2018).
Specs that matter
Roland's spec page lists 11 instrument parts (plus one exclusive part for trigger out). Each of the 11 tracks can be assigned any ACB instrument from the built-in library, which covers TR-808, TR-909, TR-606, TR-707, and other TR-series voice sets. Any track can alternatively be loaded with a custom .WAV file from an SD card, so ACB voices and sample content coexist within the same pattern.
The 16-step sequencer supports sub-step resolution and pattern chaining. On-board effects include scatter, compression, reverb, delay, and sound modify controls.
Connectivity: 6 ASSIGNABLE OUT/TRIGGER OUT jacks (1/4-inch, configurable per track) plus a stereo MIX OUT (L/MONO, R), phones out, EXT IN (L/MONO, R), and a miniature-phone trigger-out jack. USB carries both multi-channel audio and MIDI (class-compliant on macOS; Roland driver required on Windows). Full DIN MIDI IN/OUT jacks are present. Power requires a DC adapter (included); no battery option.
Physical dimensions per Roland spec: 409(W) x 263(D) x 58(H) mm, weight 2.1 kg (sourced from roland.com/us/products/tr-8s/specifications/).
What's in the box
- TR-8S Rhythm Performer unit
- AC adapter
- Owner's Manual
- Leaflet "USING THE UNIT SAFELY"
Design context
The Roland TR-8S sits at the intersection of classic TR-series sequencer workflow and modern sample-based production. The 2014 TR-8 introduced ACB modeling in a full-size format; the TR-8S extended that model by making ACB voices and sample playback interchangeable on the same track.
Within Roland's drum machine lineup, the TR-8S occupies the professional desktop tier: more connectivity-rich and more track-capable than the compact Boutique-format TR-08, and more capable than the six-track TR-6S released in 2020. It targets producers who want TR-808 or TR-909 character as a starting point but need the flexibility to replace or augment any voice with session-specific material.
The built-in ACB library spans TR-808, TR-909, TR-606, TR-707, and additional TR-series voices; Roland has expanded this library via firmware updates since launch. Check the current Roland product page for the full current list.
Sources
- Roland TR-8S specifications -- track count, connectors, dimensions, accessories (confirmed 2026-09-04)
- Roland TR-8S MIDI Implementation Chart -- MIDI note assignments, version 1.02, dated Feb 20 2018
- Roland TR-8S owner's manual (downloadable from Roland support portal) -- full feature documentation
Metrics
| Sequencer Steps | 16 |
|---|---|
| Instrument Voices | 11 |
| Width | 409 mm |
| Height | 58 mm |
| Depth | 263 mm |
| Weight | 2.1 kg |
Descriptors
| Brand | Roland |
|---|---|
| Sound Engine | ACB + sample playback |
| Form Factor | Desktop drum machine |
| Power Source | DC wall adapter (included); no battery |
| Release Date | February 20, 2018 |
Instrument tracks (default TR-808 kit)
The TR-8S provides 11 configurable instrument tracks. Assignments shown reflect the factory TR-808 ACB kit. Each track can be freely reassigned to any built-in ACB voice or custom WAV sample. HC = Hand Clap (MIDI 39) in the TR-8S mapping, distinct from the TR-808's HC (Hi Conga).
| Track | Default Voice | Family | Tags | MIDI Note |
|---|---|---|---|---|
| BD | Bass Drum (TR-808 ACB) | Kick | 808-kick; acb | 36 |
| SD | Snare Drum (TR-808 ACB) | Snare | 808-snare; acb | 38 |
| LT | Low Tom (TR-808 ACB) | Tom | tom; acb | 43 |
| MT | Mid Tom (TR-808 ACB) | Tom | tom; acb | 47 |
| HT | Hi Tom (TR-808 ACB) | Tom | tom; acb | 50 |
| RS | Rim Shot (TR-808 ACB) | Percussion | rim; acb | 37 |
| HC | Hand Clap (TR-808 ACB) | Percussion | clap; acb | 39 |
| CH | Closed Hi-Hat (TR-808 ACB) | Hi-Hat | closed-hat; acb | 42 |
| OH | Open Hi-Hat (TR-808 ACB) | Hi-Hat | open-hat; acb | 46 |
| CC | Crash Cymbal (TR-808 ACB) | Cymbal | crash; acb | 49 |
| RC | Ride Cymbal (TR-808 ACB) | Cymbal | ride; acb | 51 |
Frequently asked questions
Can the TR-8S load custom drum samples?
Yes. Any of the 11 instrument tracks can be loaded with a custom WAV file from an SD card. Sample content and ACB voices coexist freely within the same kit and pattern.
What built-in voice sets does the TR-8S include?
The TR-8S ships with ACB voices from the TR-808, TR-909, TR-606, TR-707, and additional TR-series instruments. Roland has expanded the library through firmware updates; check the current Roland product page for the full list.
How is the TR-8S different from the TR-08 Boutique?
The TR-08 is a compact Boutique module with a fixed TR-808 voice set. The TR-8S is a full-size desktop machine with 11 configurable tracks, a broader ACB voice library including TR-909, per-track sample loading, 6 assignable direct outputs, and a more complete effects section.
Does the TR-8S work as a USB audio interface?
Yes. Connected via USB, the TR-8S presents multi-channel audio to the DAW. Class-compliant on macOS; the free Roland USB driver is required on Windows.
Does the TR-8S have individual outputs for each instrument?
The TR-8S has 6 ASSIGNABLE OUT/TRIGGER OUT jacks (1/4-inch), each freely routable to any of the 11 tracks. This allows multi-track hardware recording without a large interface, though it does not provide a separate physical jack for every track simultaneously.
Can the TR-8S run on batteries?
No. The TR-8S requires a DC wall adapter (included). There is no battery option.
When was the TR-8S released?
Roland's MIDI Implementation Chart for the TR-8S is dated February 20, 2018 (version 1.02), confirming a 2018 release. Exact retail availability should be verified against Roland's press release archive.
What are the physical dimensions of the TR-8S?
Per Roland's spec page: 409 mm wide, 263 mm deep, 58 mm tall, weight 2.1 kg.
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