Ensoniq VFX (1989)

A performance-type synthesizer with Transwave wavetable-like oscillators, released in 1989 as Ensoniq's step into more ambitious synthesis

Overview

The Ensoniq VFX is a digital rompler and performance-type synthesizer released in 1989. It took Ensoniq past earlier models like the ESQ-1 and SQ-80 and into more advanced synthesis. It has 61 keys with velocity and polyphonic aftertouch, and a 21-voice polyphonic architecture with 21 digital oscillators. The VFX-SD variant added a built-in disk drive and updated waveforms, and became a popular studio workhorse. Later versions of the VFX-SD and SD-1 increased polyphony to 32 voices.

Specifications

Product type	synthesizer
Keyboard	61 keys with velocity and aftertouch
Polyphony	21 voices (original VFX); 32 voices (later VFX-SD I/II and SD-1)
Oscillators	1 to 6 per voice
Wavetable	109 waveforms (multi-sampled acoustic); Transwave technology allowing sweep through waveform sets
Filter	Dual multi-mode digital filters; High- and Low-Pass
Memory (VFX)	120 patches (60 RAM + 60 ROM), 12 performances
Memory (VFX-SD)	Over 200 patches
Original price	$2695

Design

The VFX uses Transwave technology. These are wavetable-like oscillators that sweep through sets of waveforms to make evolving, complex timbres, similar to PPG Wave synthesis. "Dynamic Component Synthesis" is noted on the VFX-SD serial number label, but the technical implementation is not described. The design puts synthesis ahead of preset reliance, which sets it apart from typical ROMplers of the era.

Context

The VFX came after the SQ-80 and gave deeper sound design capabilities than its predecessors. In the late-1980s synth market it stood out by putting synthesis ahead of prefab patches. The VFX-SD followed soon after, with a disk drive and an expanded waveform set, and settled in as a studio workhorse.

Market

Recent listings show VFX units selling around $400 - $600, with a Reddit post noting a VFX-SD listed for $175. Common issues include power supply problems, memory degradation, calibration drift, and failing capacitors or key contacts, often linked to age and low battery conditions. Reset procedures exist, such as holding the PRESETS button and pressing Soft button (1) to restore function.