DigiTech Vocalist VHM-5 (c.1992–1996)
Not much is documented about the DigiTech Vocalist VHM-5. What exists comes from a small handful of period advertisements and a single review. It was a rackmount vocal harmony processor that could generate up to five-part harmony from a live vocal input. That was a dedicated hardware job, back before software plugins took it over.
EQ Magazine (January 1992, p.104) reviewed the VHM-5 on release. The reviewer noted that the MIDI output could do more than send program changes. It could also trigger and control the harmonies being generated. The front panel had controls for working out harmony ideas before the singer arrived, and parameters such as Pitch Randomize and Portamento were adjustable on the faceplate. A later reader report in EQ Magazine (October 1992, p.7) described practical use. The reader boosted the 200 Hz area by about 2 dB at the input, and found that "3-above" and "2-above, 1-below" settings worked best with a baritone voice, with the L/R outputs running to a mixer.
Later advertisements — such as one in Mix Magazine (August 1995, p.69) — promoted a “Gender” feature, suggesting the VHM-5 received a formant-shift update partway through its life. The manufacturer was DigiTech, then at 5369 South Riley Lane, Salt Lake City, Utah. Beyond these period sightings, detailed service documentation and production dates are thin. The VHM-5 remains a little-documented but purposeful piece of 1990s vocal processing gear.
Known specifications (from period sources):
- Five-part harmony generation from mono vocal input
- MIDI out for program changes and harmony triggering
- Adjustable Pitch Randomize and Portamento
- Left/right outputs; mic-level input
- Rackmount format
- Later units included Gender (formant-shift) processing
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