The Model 15 was the smallest of the Moog modular synths, originally intended for schools and music colleges to demonstrate the basics of analogue synthesis and voltage control. (The largest being the Moog 35 modular, as used by Keith Emerson among others). With modular synths, the instrument consists of discrete modules – oscillators, filters, amplifiers etc – which the user patches together using cables. However, the set of modules that you got was decided by the manufacturer, unlike today’s Eurorack where users buy individual modules and slot them in as they wish. There are now several companies making ‘clones’ of the original Moog modules using modern components, which makes them a bit more affordable. Vyv uses a Model 15 clone by Club of the Knobs, with a couple of non-standard modules, namely an extra VCF (filter) and an extra VCO (oscillator) in place of the standard Moog static filter bank which would normally sit top left of the cabinet.
As it says on the Moog website, “The SUB 37 Tribute Edition is a limited release, 2-note paraphonic analog synthesizer built on the award winning Sub Phatty sound engine, but specifically enhanced to meet the demands of professional synthesists, sound designers, and keyboard players.” It sounds subtly different from the Minimoog, but has a number of performance advantages, notably presets! Dan uses one for the bass sound with the Moog Ensemble, put through a Vortexion valve amd and Ampeg cab, and sometimes doubled with Taurus bass pedals for added earth-shudderingness.
The mainstay of the Moog Ensemble since it formed in 2005. They offer the classic creamy Moog sound in a reasonably portable and reliable package, so there have always been three or four of these in the band. These instruments are quite old now, so it has been necessary to bring a backup or two when playing live, as they don’t respond well to unstable mains voltages or fluctuating temperatures. With the re-release of the Model D in 2016, many of us are using the slightly more resilient new version for touring while preserving the originals for studio work.