FR-64S vs FR-64fx
The FR-64fx's effective mass is 20 g against the FR-64S's 35 g. Both share effective length (245 mm).
Both turn up in the same documented systems.
AI-generated product photo — not official manufacturer imagery.
The FR-64S is Fidelity Research's heavyweight version of the FR-64 tonearm, engineered specifically for low-compliance moving-coil cartridges. It belongs to the FR-64 series and shares the same 245 mm effective length as other FR-64 variants, but uses a stainless steel arm tube and structure, giving it a much higher effective mass (around 35 g) than lighter aluminum designs such as the FR-64FX. This high mass, combined with a dynamic-balance downforce mechanism and precise anti-skating, makes the FR-64S well suited to very low-compliance cartridges and contributes to its reputation for stable tracking, powerful yet controlled bass, and excellent reproduction of space and ambience. The use of stainless steel throughout the arm is intended to reduce vibration compared with aluminum alloy, while the detachable headshell and finely engineered bearings support accurate setup and long-term durability.
Tonearm specifications
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
Components that show up alongside the FR-64S in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The FR-64fx's effective mass is 20 g against the FR-64S's 35 g. Both share effective length (245 mm).
Both turn up in the same documented systems.
The ACT 0.5's effective mass is 9 g against the FR-64S's 35 g and its effective length 235 mm against 245 mm.
The Encounter Mk3c's effective mass is 12.5 g against the FR-64S's 35 g and its effective length 239 mm against 245 mm.
The IV's effective mass is 10 g against the FR-64S's 35 g and its effective length 233.15 mm against 245 mm.
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