SY-1

When Yamaha decided to shrink their massive GX-1 dream machine down to something a gigging musician could actually carry, they created something wonderfully weird—the SY-1 arrived in 1974 as Yamaha's first portable synthesizer, and it did something almost no other synth of the era bothered with: it made velocity sensitivity standard from day one.

The SY-1 is built around a single voltage-controlled oscillator feeding into a resonant low-pass filter with a straightforward but clever control layout. You get a pair of sliders for Attack and Sustain on the amplitude envelope, plus the signature Attack Bend feature that lets you shape both pitch and filter movement at the note's beginning in ways that feel organic and expressive. The keyboard itself is the real star—it responds to how hard you play the keys and supports aftertouch, letting you modulate vibrato, wah-wah, or volume in real time without taking your hands off the keys. On the left side you'll find filter and vibrato controls positioned for one-handed tweaking while you play, alongside switches for pulse-width modulation, portamento, and keyboard transposition. The whole thing weighs just 26 pounds and comes loaded with 28 preset envelopes covering everything from clarinet and flute to guitar, piano, and some genuinely strange sounds like Growlpet and Pulsar.

The SY-1's sound is characteristically sharp and quirky—nothing like the warm, bass-heavy competition from Roland. Its filter mirrors the famous Yamaha CS filter design, giving it a distinctive gnarly quality that feels fresh even decades later. Players have consistently praised its ability to generate unusual and compelling sounds through simple slider manipulation, though the limited envelope controls mean you're working within constraints that actually encourage creative problem-solving rather than endless tweaking. It's the kind of instrument that rewards experimentation and sounds nothing like anything else from that era.