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The Spiral Groove SG-1, particularly in its upgraded SG1.2 version, is a flagship turntable designed and manufactured by Spiral Groove in Berkeley, California. It features a belt-driven design with a low-voltage, high-torque AC synchronous motor that is electronically selectable between 33 1/3 and 45 rpm speeds. The motor is decoupled from the turntable to minimize noise interference. The platter assembly includes an inverted sapphire disc and hardened steel bearing, with a heavy, layered platter topped by graphite to reduce noise and vibration. The SG1.2 upgrade adds a heavier platter with a magnetic levitation system to reduce bearing load, improved isolation feet based on Strange Attractor technology, and a two-platform body separated by elastomers for mechanical decoupling and vibration damping. The tonearm mounting board uses a stainless steel bayonet system allowing quick removal and perfect alignment of multiple tonearms and cartridges. The turntable weighs approximately 43 kg (95 lbs) and is praised for its fast sound, low noise floor, enhanced bass impact, and imaging depth. The SG1.2 is1 owners.
Turntable mechanics and performance
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Delphi MkVI 2nd's platter weight is 16 kg (35 lbs) against the SG1's 19.05 kg (42 lbs), its platter material Acrylic against Steel, and its weight 16 kg (35 lbs) against 43 kg (95 lbs). Both share drive type (Belt).
The Cosmos's platter weight is 9.07 kg (20 lbs) against the SG1's 19.05 kg (42 lbs), its platter material Aluminum against Steel, and its weight 20 kg (44 lbs) against 43 kg (95 lbs). Both share drive type (Belt).
The Crescendo's platter weight is 10 kg (22 lbs) against the SG1's 19.05 kg (42 lbs), its platter material Aluminum against Steel, and its weight 35 kg (77 lbs) against 43 kg (95 lbs). Both share drive type (Belt).
The Double X NEO's platter weight is 10.3 kg (23 lbs) against the SG1's 19.05 kg (42 lbs), its platter material Aluminum against Steel, and its weight 24 kg (53 lbs) against 43 kg (95 lbs). Both share drive type (Belt).
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