Yamaha SU10
A one-pound phrase sampler that put 16-bit sampling, a resonant filter, and a scratch ribbon in a pocket-sized box.
Overview
The SU10 is the rare piece of gear that gets described by its owners in terms of where it fits — a backpack, a subway car, an airplane tray table. At roughly one pound, the Yamaha SU10 Digital Sampling Unit is small enough that portability stops being a feature and starts being the whole point. It was priced at $399 when new, and Mix (1996, p.148) introduced it to readers as a MIDI-compatible portable "pocket sampler" — a description that has stuck to it ever since.
What separates the SU10 from the disposable toy samplers of its era is what's actually inside. It records and plays back up to 48 stereo or mono samples at 16-bit resolution, and those samples are stored at power-down — meaning the unit holds its contents when you switch it off rather than dumping everything the moment the battery dies. Four sample rates are supported, up to 44.1 kHz. Drop to a lower rate and the SU10 can capture up to 54 seconds of wave data, a tradeoff that owners of the period clearly understood: fidelity when you need it, duration when you don't.
Editing is where the SU10 punches well above its size. Sample start, end, and loop points can be set arbitrarily, and samples can then be truncated to strip away unwanted material at either end. Each sample plays back at its own volume setting. Five loop modes are available — No Loop, No Loop Reverse, Whole Loop, Whole Loop Reverse, and Partial Loop — and the unit can hold selected samples, play them in reverse, and transpose them across twelve pitches to form a chromatic scale. Up to four sample-play sequences, called Songs, can be stored, and a Song can be set to loop indefinitely, started and stopped and continued from any point, or played simultaneously alongside a separate sample.
The resonant filter is configurable as lowpass, bandpass, or highpass, and it can be applied in real time during playback or recording — to the SU10's own sounds or to an external audio source fed through the unit. That external-audio path matters more than it first appears, because it's what makes the ribbon controller interesting. The ribbon can alter filter cutoff, bend pitch, crossfade between the internal sounds and an external input, or digitally emulate record-scratching. Like the filter, the scratch effect works on both internal samples and incoming audio, which turns the SU10 into something closer to a live performance tool than a static sample player.
For DJs and hip-hop producers working with loops, that's the kind of feature that quietly determines whether a box gets used or sits on a shelf.
The rear-panel housekeeping is solid for a unit this small. Data can be backed up via System Exclusive Bulk Dump, and the SU10 supports the MIDI Sample Dump Standard, so samples can be sent to a computer or to any compatible MIDI instrument with sample RAM and Sample Dump Standard support. That's not a trivial detail — it means the SU10 can function as a feeder for a larger rig rather than a dead-end gadget.
The portability claims aren't just marketing copy. Electronic Musician ran a profile of astrophysicist Fiorella Terenzi, who described the SU10 as her only possible choice of sampler when traveling, citing its size advantage when she needed to fit "the galaxy into her backpack, or a subway car or an airplane." The same publication's coverage of John Barnes' Ultimate Taxi — a mobile recording studio built into a cab — noted the SU10 handling drum loops, canned laughter, and sound effects alongside the rest of the vehicle's Yamaha rig. A sampler that turns up in both an astrophysicist's travel kit and a taxi-cab performance rig is a sampler with a very specific kind of reputation.
Collectors and users should go in with clear expectations. The SU10 is a phrase sampler — it records relatively small snippets and cannot create multisamples. That's a limitation baked into the category, not a flaw unique to this unit, but it's the single fact that determines whether the SU10 is right for a given job. It is not a workstation. It is not going to replace a rack sampler. What it does, it does in a form factor almost nothing else matches, and the ribbon controller and real-time filter give it a tactile, performance-oriented character that most budget samplers of the period simply don't have. The $399 original price buys a lot of capability per pound here — and per dollar, honestly — provided the buyer wants exactly what the SU10 is.
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