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The Michell Engineering Gyrodec MkIV is a legendary three-point spring-suspended turntable from the late 1990s era, featuring a high-mass suspended assembly for superior vibration isolation and precise speed stability. This specific unit has been modified by Gert Pedersen, a noted audio expert renowned for optimizing Michell turntables through custom upgrades such as improved suspension tuning, power supplies, and damping modifications to elevate performance beyond stock specifications. Key design elements include an inverted oil-circulating main bearing for minimal friction and rumble, an impedance-matched acrylic/vinyl composite platter with brass weights for enhanced inertia, a weighted pendulum-style aluminum sub-chassis (approximately 8kg), and a free-standing motor unit to eliminate vibrations. Post-1999 MkIV models incorporate split suspension turrets for independent height and spring orientation adjustment, tuning the vertical resonance to 2-3Hz. Compatible with a wide range of tonearms (e.g., Rega RB-300, SME Series IV/V, Zeta) via custom arm boards ensuring static and dynamic balance at 1kg total arm + board mass. Upgrades like HR-PSU, Orbe clamp, and Denso damp are common. No longer in production, but highly regarded for its modular upgradability and reference-level sound.
Turntable mechanics and performance
Size, weight, and appearance
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Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Resolution Modern's wow & flutter is 0.100% against the Gyrodec mkIV's 0.040%, its platter weight 9.07 kg (20 lbs) against 3 kg (7 lbs), and its weight 9.07 kg (20 lbs) against 14 kg (31 lbs). Both share platter material (Acrylic).
The Orbe SE's platter weight is 5 kg (11 lbs) against the Gyrodec mkIV's 3 kg (7 lbs) and its weight 13.5 kg (30 lbs) against 14 kg (31 lbs). Both share wow & flutter (0.040%) and platter material (Acrylic).
Both turn up in the same documented systems.
The TD 1600's wow & flutter is 0.050% against the Gyrodec mkIV's 0.040%, its platter weight 4.2 kg (9 lbs) against 3 kg (7 lbs), its platter material Aluminum against Acrylic, and its weight 11 kg (24 lbs) against 14 kg (31 lbs).
The PD-171A's platter weight is 5 kg (11 lbs) against the Gyrodec mkIV's 3 kg (7 lbs), its platter material Aluminum against Acrylic, and its weight 25.4 kg (56 lbs) against 14 kg (31 lbs). Both share wow & flutter (0.040%).
Transcriptor Hydraulic
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