Ferrum Audio OOR Headphone Amplifier w/ Hypsos Power Supply

Ferrum Audio OOR Headphone Amplifier w/ Hypsos Power Supply Highlights

Product: Ferrum Audio OOR Headphone Amplifier w/ Hypsos Power Supply

Product SKU: 90714

Serial Number: 05323-00042

Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including some marks on the top edge of the faceplate of the power supply. There are also some light marks on the top and sides of each chassis. Despite these minor blemishes, this headphone amplifier still looks great and sounds wonderful.

What is Included: Headphone Amplifier, Hypsos Power Supply, Power Interconnect Cable, Quick Start Guide, Original Power Supply, Power Cable, Factory Packaging

Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.

Age: 2 years

# of Owners: 1

Tobacco Exposure: No

Service History: None

MSRP: $3670

Other Notes: "The Ferrum Audio OOR features a power output of 8W at 60Ω and 1.6W at 300Ω balanced, plus 2W at 60Ω and 400mW at 300Ω single-ended. This fully discrete Class AB analog amplifier drives demanding headphones with exceptional clarity. Its proprietary signal path seamlessly converts single-ended inputs into balanced signals. Despite massive power reserves, an Alps Blue Velvet potentiometer guarantees a low noise floor for sensitive IEMs. Pairing it with the software-controlled HYPSOS hybrid power supply forms a flagship-tier system with superior dynamic range and a holographic soundstage. Reviewers highly recommend this amplifier for hard-to-drive headphones like the HIFIMAN Susvara and Abyss Diana Phi. Critics praise its neutral, creamy, and soulful sound profile that avoids a sterile clinical feel. Experts also note that attaching the HYPSOS noticeably tightens bass control, improves microdynamics, and adds a precise shimmer to the treble."

Product Specifications

Manual

Reviews:  Review 1

Review 2

Shipping: Cost to ship this item within the contiguous United States is a flat rate of $55- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $750 will require a signature upon delivery.