Yamaha SY-55 Synthesizer 1990s

Yamaha SY-55 Synthesizer

Approx time of manufacture: Early 1990s

Origin: Japan

Mods/repairs: The internal battery which stores the internal memory has been replaced professionally and it was done the right way which includes replacing the hardwired old battery with a new battery that clips into a hardwired clip. This makes changing the battery the next time it needs it ( a long time in the future) a cinch.

Operational Condition: Fully-Functioning

Cosmetic condition: There is some non-sticky residue above the keys that can be removed with some patience and elbow grease. The plastic over the screen has a slight hazer to it (but is completely and easily legible) as does some other spots on the control panel. Overall condition is an 8 out of 10

Description from Vintage Synth Explorer’s website: The SY-55 is a digital workstation that is based on samples-playback and also one of the first rompler workstations by Yamaha to ditch the DX7 FM synthesis.

It is a 2nd generation 16-bit AWM2 system that makes use of wave data digitally at 32kHz or 48 kHz. The SY-55 also has 24-bit internal signal processing capabilities along with high-res 22-bit digital-to-analog converters. Thanks to its digital filter system, it is possible to shape sound in real-time and it comes with two megabits of sampled waveform ROM for a choice of 74 individual waveforms. With this synth, you get two modes of operation. The first, Voice, allows you to select and play a single sound. The second, Multi, is used for multitimbral setups that you use with the sequencer. In addition, it has a versatile 1,2, or 4-element voice architecture and complex envelope generators to provide users with extensive sample layering capabilities.

In terms of design, the SY-55 features a 61 key keyboard with both velocity and after-touch for expressive control. On the left of the front panel, you’ll find the self-centering pitch bend wheel along with the modulation wheel. Above these are the DATA and WAVEFORM card slots while in the middle you’ll find the master volume, sequencer keys and indicator, as well as internal, card, and preset keys. The MULTI key and indicator, SEQ key and indicator, as well as 16-character x 2-line backlit LCD panel are also on the front panel. The rear panel consists of the power switch, MIDI In, Out, and Thru connectors, click volume control, Output R, and L/Mono jacks, and phones jack. Here you will also find all the jacks for optional peripherals, such as a Yamaha breath controller, foot switch and foot controller which are not included in this sale.