Ferrum Audio OOR with Hypsos Power Supply Headphone Amplifier

Ferrum Audio OOR with Hypsos Power Supply Headphone Amplifier Highlights

Product: Ferrum Audio OOR with Hypsos Power Supply Headphone Amplifier

Product SKU: 91770

Serial Number: 05322-00192

Cosmetic Description: Excellent condition with no notable blemishes.

What is Included: Headphone Amplifier, Hypsos Power Supply, Power Interconnect Cable, Power Distributor, 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.