Roland TR-606 Drumatix (1981–1984)
Eight discrete analog voices, a set of C-cell batteries, and a memory that eats itself - the budget rhythm box that failed at everything except character.
Overview
The TR-606 Drumatix is a small silver box, 275 mm square, 70 mm tall, weighing 2.3 kg. Roland built it in Japan between 1981 and 1984 and sold it for $495. It runs on analog synthesis, and all eight voices are discrete analog circuits. No samples, no digital tricks. The sounds are bass drum, snare, low tom, mid tom, hi tom, rimshot, hand clap, cymbal, and open and closed hi-hat. Eight voices total, one per sound, each on its own circuit.
The architecture is crude in a way that turns out to be musical. The bass drum is a tuned oscillator with a sharp attack. The snare blends noise and tone with a gritty decay. The cymbal is a chaotic burst of noise with no real decay control, and it shares a noise source with the open hi-hat — trigger them together and one chokes the other. That choke is a design quirk, and it became a rhythmic tool. The hand clap is a burst of white noise through a resonant filter, closer to a wet snap than a crowd. None of this is hi-fi. All of it is recognizable, and that is what kept the 606 alive long after Roland stopped making it.
Programming is push-button entry with a tempo knob and slide potentiometers for tuning and decay. The step display is sixteen red LEDs. The fact sheet has an unresolved conflict here. The spec table lists steps per pattern at 32, while the article body describes a 16-step sequencer with sixteen LEDs giving visual feedback for each step. Both figures appear in the source material, and the archive is not going to pick one and pretend the other doesn't exist. The pattern count is not in dispute: 32 user-programmable patterns, plus 16 built-in rhythms. The tempo range is 32 to 260 BPM.
The 606 carried Roland's proprietary DIN sync, which let it lock tempo with the MC-404 sequencer and the TB-303 bassline synthesizer. It also had Trigger In and Trigger Out jacks, which allowed syncing with non-Roland gear - an unusual bit of generosity in a machine built to a price. This was how a home studio kept time before MIDI existed. Roland designed the 606 as a companion to the MC-404 and later the TB-303. Sequencer, bassline, and drums were meant to work as a complete rhythm section locked in perfect time.
Key Features
Eight Discrete Analog Voices
Every voice in the TR-606 is its own analog circuit. There is no sample playback and no shared synthesis engine doing double duty. The bass drum is a tuned oscillator with a sharp attack. The snare combines noise and tone with a gritty decay. The hand clap is white noise pushed through a resonant filter. The cymbal is a burst of noise with no real decay control, so it either fires or it doesn't. The cymbal and open hi-hat share a noise source, which produces a choke effect when both are triggered at once. Owners learned to use that choke as a compositional device rather than fight it.
Sequencing with Accent and Flam
Preset-only drum boxes of the era, and the fact sheet names the Korg KR-55 as the comparison, gave you what they gave you. The TR-606 let users build custom patterns across 32 user slots, with 16 built-in rhythms on top. Accent and flam are both programmable. Accent gives a step extra emphasis. Flam is a double-hit effect that adds a human-like swing. The flam timing is fixed, so it comes out as a mechanical stutter rather than a natural roll. That stutter became part of the machine's signature. The sequencer runs eight tracks across 32 user-programmable patterns.
DIN Sync and Trigger In/Out
The 606 used Roland's proprietary DIN sync to lock tempo with the MC-404 and the TB-303. An independent report on implementing DIN sync lists the TR-606 among the devices used to verify the scheme (E-RM, Implementing DIN Sync / SYNC24 / Roland Sync). It also carried Trigger In and Trigger Out jacks, which extended synchronization to non-Roland gear. That made it a bridge between the closed Roland ecosystem and everything else on the desk. This was the pre-MIDI era, and DIN sync was the working standard for anyone building a synchronized home setup.
Battery Operation and Non-Volatile Memory
The 606 runs on an external 9V DC supply at 500 mA, drawing 120 mA, but it also carries an internal 9V battery that preserves memory. That battery is the machine's defining flaw. It is notorious for leaking and corroding the circuit board, and it has taken out countless units. The memory survives power-off only as long as the battery holds, and when the battery fails, it fails destructively. Enthusiasts now retrofit modern power supplies or replace the battery with a holder to prevent future damage.
Brushed Metal Faceplate, Sixteen Red LEDs
The faceplate is brushed metal with a minimalist layout, and the step display is sixteen red LEDs. Control is push-button programming with a tempo knob and slide potentiometers for tuning and decay. There is no velocity sensitivity and no dynamic range to speak of. The tuning range is limited, and the fact sheet does not give a figure for it.
Historical Context
The TR-606 arrived in 1981 at $495, which the fact sheet describes as modest even for the time. The TR-808 landed the same year as Roland's flagship. It was deep, punchy, and powerful, and it cost $1,195. The 606 was the budget alternative: less polished, less powerful, but programmable and sync-capable. Roland designed it as a companion to the MC-404 and later the TB-303. The intended workflow had the MC-404 controlling TB-303 basslines while the TR-606 laid down the beat, all locked in perfect time via DIN sync.
It was a commercial flop. Like its green-synthesizer sibling the TB-303, the 606 was dismissed as cheesy, limited, and sonically thin next to the punchy TR-808. By 1984 it was discontinued, overshadowed by its more famous siblings. The CR-78, beloved by Phil Collins and ABBA, was a different kind of instrument entirely. The 606 went the other way, with thin sounds, full programmability, and a sync standard that mattered to almost nobody at the time.
Collectibility & Value
The 606 found its audience after Roland stopped making it. Artists like Phuture, 808 State, and early Autechre exploited its flaws. Its brittle, lo-fi claps, sputtering cymbals, and hollow toms became the secret sauce in early Chicago house, Detroit techno, and Sheffield bleep. Paired with the squelching TB-303, the 606 formed the backbone of the acid sound. Its lack of dynamic range and inconsistent timing became virtues in lo-fi electronic music. Its rigid sequencer, limited tuning range, and lack of velocity sensitivity forced rhythmic creativity rather than rewarding polish.
Current market value sits between $800 and $1,500 USD as of 2025, according to the fact sheet. eBay completed sales data labeled October 2026 gives more detail: a high of $806, a latest sale of $698, a median of $372, and a low of $99, at a volume of roughly five units per month. A twelve-month window of 34 completed sales shows a range of $158 to $686 with a median of $372. Those numbers exclude accessories, parts, and non-working units, which matters here because a large share of surviving 606s are not working. One active listing, a Drumatix Drum Computer with a two-year warranty, was priced at $814.
Rarity is described as uncommon, and not because few were made. So many were discarded, abused, or ruined by their own design that clean units are scarce. When buying, look for signs of battery damage. Green crust near the battery compartment is a red flag. Test every sound and every step in the sequencer, since dead voices or skipped steps often point to failing switches or dried potentiometers. The push-button switches are prone to failure after 40 years of use and often need full replacement or careful cleaning.
Roland's Cloud version of the 606 is shockingly accurate as a software emulation. The hardware comes with a leaky battery and forty-year-old switches. A wobbling tempo knob at 118 BPM and a hand clap that sputters like a misfiring engine are not defects to be corrected.
Market Value
┌──────────────────────────────────────────────────────────────────────────┐ │ ROLAND TR-606 Nov 2026 │ ├──────────────────────────────────────────────────────────────────────────┤ │ High $806 Latest $698 │ │ Median $372 Trend — │ │ Low $99 Volume ~5/mo │ ├──────────────────────────────────────────────────────────────────────────┤ │ $900 ┤ │ │ │. . │ │ │ . . .│ │ $536 ┤ │ │ │ . . . . . . . │ │ │. . . . . . . . . │ │ │ . . . . . . . │ │ $50 ┤ . . . . │ │ ├─────────────────────────────────────────────────────────────────│ │ vol │▅▂ ▂▂ ▅▂▂█▂ █ ▂▂ ▂ ▂ ▂▂ ▂▂ ▅ ▂ ▂▂ ▂ ▂ ▂▂▂│ │ └─────────────────────────────────────────────────────────────────│ │ 2026-01 2026-04 2026-08│ └──────────────────────────────────────────────────────────────────────────┘
eBay completed sales. Excludes accessories, parts, and non-working units. Hover points for details.
eBay Listings
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