Moog Taurus I (1975–1981): The Foot-Operated Colossus That Rumbled Beneath Rock’s Golden Age
A 13-note pedalboard that let keyboardists play analog basslines with their feet and keep their hands free for solos and chords.
The Moog Taurus I came out in 1975, at the peak of analog synthesis and progressive rock. It solved one specific problem: how do you play deep, growling, Moog-quality bass lines without giving up your hands? You use your feet. Keyboardists could lay down bass with their boots while their fingers played arpeggios and solos. It weighed 35 pounds, so the extra limb came with some baggage.
The Taurus I became a secret weapon for bands like Genesis (especially during the Peter Gabriel and early Phil Collins eras) and Yes, where layered arrangements demanded more than one player could physically deliver. Tony Banks used the Taurus to thicken his sound, letting his left hand rest while his left foot played fifths and octaves. It sat between the organist's traditional bass pedalboard and analog synthesis, and it carried the sound of the Moog ladder filter: warm, fat, and able to sound like a dinosaur's mating call or a tectonic plate shifting.
Specifications
| Type | Analog monophonic bass synthesizer |
| Keyboard/Pedalboard | 13-note foot-operated keyboard (C to C) |
| Oscillators | 1 voltage-controlled oscillator (VCO) |
| Waveforms | Sine, triangle, pulse (variable width) |
| Filter | Moog ladder filter (24dB/octave low-pass) |
| Envelope | ADSR envelope generator |
| Control Inputs | 1/4" CV and Gate inputs for external control |
| Audio Output | 1/4" unbalanced |
| Power | 120V AC, 60 Hz (US standard) |
| Dimensions | 36.5 x 14.5 x 6 inches (92.7 x 36.8 x 15.2 cm) |
| Weight | 35 lbs (15.9 kg) |
| Construction | Wooden cabinet with metal grille, rubber foot pedals |
| Country of Manufacture | United States |
| Original MSRP | $1395 (1975) |
Key Features
- Foot-Operated Pedalboard Design: The 13-note (C to C) rubber-topped pedalboard wasn’t just a gimmick—it was a performance breakthrough. Modeled after organ pedalboards but tuned for synth bass, it allowed seamless integration into live rigs. You could hold a chord with your left hand on a Minimoog while your foot played a walking bassline on the Taurus. Try doing that with two hands.
- Moog Ladder Filter (24dB/octave low-pass): This is why the Taurus I sounds like Moog. That legendary filter imparts a warmth and resonance that’s impossible to fake digitally. Even at full resonance, the filter remains musical—snarling but never brittle. When you hit a low C and sweep the filter, it feels like opening a portal to the Earth’s core.
- Monophonic Analog Architecture with ADSR Envelope: Despite having only one VCO, the Taurus I delivers immense character thanks to its full ADSR envelope. You can shape notes from soft, swelling drones to sharp, percussive stabs—essential for mimicking synth bass parts from studio recordings in a live setting.
- CV/Gate Inputs for External Control: A nod to modular purists, the 1/4" CV and Gate inputs let you drive the Taurus I from a sequencer or another synth. Want your ARP 2600 to trigger Taurus bass? Done. This flexibility made it a favorite in hybrid setups.
- Built Like a Tank: Housed in a solid wooden cabinet with a metal grille and industrial-grade rubber pedals, the Taurus I was built for the road. It wasn’t light—35 pounds will wreck your back—but it survived the rigors of 1970s touring. That said, those rubber pedals are now the Achilles’ heel of surviving units (more on that later).
Historical Context
Before the Taurus I, bass pedals were either mechanical (like those on a Hammond organ) or simple electronic add-ons with limited tonal range. Moog didn't invent the concept of foot-played keyboards, but they were the first to marry it to a full analog synth voice, and to do it under their own name. Released in 1975, the Taurus I arrived when progressive rock was at its most ambitious. Bands were layering keyboards, experimenting with time signatures, and asking more from their stage setups.
It stood apart from contemporaries like the Oberheim OB-1, a portable, hand-played synth with a built-in sequencer but no pedal interface. The OB-1 was innovative, but it didn't solve the "hands vs. bass" problem the way the Taurus did. Moog wasn't chasing portability or polyphony. They were chasing depth. The Taurus I was succeeded by the Moog Taurus II in 1981, which added a second VCO, preset memory, and a sleeker metal case, but lost some of the raw immediacy of the original. In 2010, Moog revived the line with the Moog Taurus III, a modern reinterpretation with MIDI and expanded control. At nearly $3,500, it was more tribute than replacement.
The Taurus I also reflected the shift from modular to integrated synth design. By the mid-70s, musicians wanted self-contained instruments, not racks of modules. The Taurus I was a complete, dedicated bass synth in one rugged box, with no patch cables and no guesswork. It was Moog's answer to the need for reliability on stage.
Collectibility & Value
Today, the Moog Taurus I is rare. Fewer than 200 units were reportedly produced during its 1975-1981 run, and many were worked hard on tour. That scarcity, plus its status in prog and fusion circles, has pushed prices way up. As of 2025, a working Taurus I in good condition will fetch between $4,000 and $7,000 USD, with pristine, fully serviced units sometimes commanding more.
Buying one takes a thick wallet and some patience. The biggest issue is the rubber foot pedals. Decades of stomping have left many units with broken contacts, cracked rubber, or intermittent triggering. Replacing or repairing them takes specialist knowledge, and some techs now 3D-print replacement parts or retrofit modern switches. Beyond the pedals, expect aging capacitors, degraded wiring, and possible power supply issues, especially if the unit hasn't been serviced in years. A "cosmetic-only" Taurus that doesn't play is just a very expensive footrest.
If you're shopping for one, insist on a fully functional demo. Check every note across the pedalboard, listen for oscillator stability, and test the filter sweep for smoothness. Original finish and paperwork (like the manual or brochure) add value.
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