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Mobile Fidelity Sound Lab UltraDisc One-Step pressings

Updated 2026-05-12 · 1 merchant listed

Mobile Fidelity Sound Lab's UltraDisc One-Step series (UD1S) is the most lavish audiophile pressing format in current production. Each title is a strictly-limited run (typically 7,500-10,000 copies), 2x 45 RPM 180 g, in a premium wood-style box with extensive booklet. Examples: Aja, Songs in the Key of Life, Tea for the Tillerman, Dark Side of the Moon, Tapestry.

Used pricing in 2026: EUR 150-600 per title, sometimes EUR 1000+ for out-of-print examples.

Where to buy

eBay

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Buying advice

The 2022 source-disclosure controversy (MoFi cut from DSD digital files, not analogue tape) cooled the secondary market for some titles. Post-disclosure pricing is more rational than peak.

The boxes can warp in humidity; lock-tight boxes are preferred. Inspect the vinyl through the inner sleeves for fingerprints and presses.