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Ferrum OOR Headphone Amplifier

Name: Ferrum OOR Headphone Amplifier
Brand: Ferrum
SKU: FERRUMOOR
Price: 1995 GBP
Availability: InStock

Stock due 3 to 5 days

Standard Items (DPD)

Usually bookshelf speakers*

Standard Deliveries Order by 3pm Mon-Fri	Free 2 weekday delivery
Express Deliveries Order by 3pm Mon-Fri	Next weekday pre 10.30am - £20 for up to 2 boxes + £5 per additional box Next weekday pre 12.30pm - £15 for up to 2 boxes + £5 per additional box
Weekend Deliveries Order by 3pm Friday	£15 for the first box + £3 per additional box
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	2 weekday remote service - £20 for first 2 items + £9 per additional box 2 to 5 weekday off-shore service - £30 for first 2 items + £9 per additional box

Medium Sized Items (FEDEX)

Usually TVs under 60" or £1000, and most floorstanding speakers*

Standard Deliveries Order by 3pm Mon-Fri	Free 2 weekday delivery
Express Deliveries Order by 3pm Mon-Fri	Next weekday delivery - £20
Weekend Deliveries Order by 3pm Friday	✗
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	Unfortunately, delivery of these product types is not available to remote locations

Large or Heavy Items (BJS)

Usually TVs over 60" or £1000, and heavy separates over 35kg*

Standard Deliveries Order by 3pm Mon-Fri	Free 2-3 weekday, 2-man delivery
Express Deliveries Order by 3pm Mon-Fri	✗
Weekend Deliveries Order by 3pm Friday	✗
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	Unfortunately, delivery of these product types is not available to remote locations

Pallet Sized Items (PALLETFORCE)

Usually large/high-end floorstanding speakers or subs*

Standard Deliveries Order by 3pm Mon-Fri	2 weekday kerbside delivery - £50 per item
Express Deliveries Order by 3pm Mon-Fri	✗
Weekend Deliveries Order by 3pm Friday	✗
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	Unfortunately, delivery of these product types is not available to remote locations

*Not exclusive to only these product types. Product value, weight, and fragility can influence the courier service used.

	Standard Items* DPD	Medium Sized Items* FEDEX	Large or Heavy Items* BJS (2-man delivery)	Pallet Sized Items* PALLETFORE
Standard Deliveries Order by 3pm Mon-Fri	Free 2 weekday delivery	Free 2 weekday delivery	Free 3-5 weekday, 2-man delivery	2 weekday kerbside delivery - £50 per item
Express Deliveries Order by 3pm Mon-Fri	Next Weekday or Choose a Day Standard - £10 for the first box + £3 per additional box Next Weekday or Choose a Day Pre-12pm Noon - £15 for the first box + £3 per additional box	Next weekday delivery - £20	✕	✕
Weekend Deliveries Order by 3pm Friday	£15 for the first box + £3 per additional box	✕	✕	✕
Remote & Off-Shore Region Deliveries Order by 3pm Mon-Fri	2 weekday remote service - £20 for first 2 boxes + £9 per additional box 2 to 5 weekday off-shore service - £30 for first 2 boxes + £9 per additional box	Unfortunately, delivery of these product types is not available to remote locations	Unfortunately, delivery of these product types is not available to remote locations	Unfortunately, delivery of these product types is not available to remote locations

*See below most common product types for each delivery service, this is not exclusive to only these product types. Product value, weight, and fragility can influence the courier service used.

DPD: Usually Bookshelf Speakers
FEDEX: Usually TVs under 60" or £1000, and most floorstanding speakers
BJS: Usually TVs over 60" or £1000, and heavy separates over 35kg
PALLETFORCE: Usually large/high-end floorstanding speakers or subs

The Ferrum OOR is a high performance headphone amplifier created for listeners who want exceptional clarity, control and musical detail. Designed from the ground up, it delivers a powerful yet natural sound that brings out the best in any pair of headphones. Simple front controls make it easy to use, while its refined design suits any audio setup. When paired with Ferrum’s matching power system, it can reveal even greater depth and realism in your music.

OOR

When the HYPSOS won an EISA award in 2021, Ferrum knew they were on the right track and went on to follow their dreams of delivering the best possible audio gear they could think of. When they learned OOR was chosen by the honorable EISA members as best Headphone Amplifier of 2022-2023, all Ferrum's dreams came true. As did HYPSOS, OOR is a ground-up design without precedent, created from a profound exploration of analogue audio in its purest form. Understated looks married with sophisticated power delivery and amplifier technologies, delivering ultra-low distortion, huge dynamics and unrivaled detail. For those who want to go even further in unleashing unheard musicality, OOR is, of course, designed to pair perfectly with the HYPSOS Hybrid Power System.

OOR will redefine the category of headphone amplifiers. OOR will drive any headphones effortlessly to the max of their potential, while preserving the essence of the music it amplifies. Ultra low distortion, zero fatigue, huge dynamics and unrivaled detail result in ultimate enjoyment. OOR actually makes something that is very difficult to accomplish, seem like the most natural thing on earth. The most important features are:

Truly Balanced
The signal path stays truly balanced using the XLR inputs and becomes truly balanced using the RCA inputs.

Ease of Use
Only three knobs on the front panel to control the most important settings.

Ferrum Power Link
OOR performs very, very good right out of the box. But OOR is made to excel above and beyond when used together with HYPSOS. Ferrum use what they dubbed their Ferrum Power Link (FPL in short) to connect the two. HYPSOS then will perform to its maximum, unleashing unheard musicality from the combination with OOR.

Superior Control
Perfected steering of output transistors protect them and never let them turn off, therefore reducing distortion to inaudible levels and keeping them in a state where they can instantly unleash all their power, crucial for high dynamics, superlative control and authority in sound.

Enhanced Transparency
The whole design is focussed on a balanced and very transparent sound signature, making listening fatigue something of the past.

Discrete Design
The discrete power amp technology is developed in-house to achieve the best possible analog quality.

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Gain	Balanced -4dB, + 6dB, +16dB Single ended -10dB, 0dB, 10dB
Operation	Fully balanced, proprietary discrete power amp technology
Inputs	XLR, RCA, 2.5 mm DC connector center positive, proprietary 4-pin DC connector
Headphone Outputs	Balanced 4-pin XLR, 6.35mm jack
Balanced Input Voltage	Max 19VRMS, recommended 3-12VRMS
Unbalanced Input Voltage	Max 9.5VRMS, recommended 1.5-6VRMS
Frequency Response	20Hz – 100kHz 0.1dB
Output Power Single Ended	400mW into 300Ω, 2W into 60Ω
Output Power Balanced	1.600mW into 300Ω, 8W into 60Ω
THD on Balanced Output	0.00011% / -119dB, 1mW into 50Ω 0.00028% / -111dB, 100mW into 50Ω
THD on Unbalanced Output	0.00008% / -122dB, 1mW into 50Ω 0.00028% / -111dB, 100mW into 50Ω
Dynamic range	130dB (A-weighted)
Input Impedance	94kΩ
Output Impedance Single Ended	22Ω on pre-amp
Output Impedance Balanced	44Ω on pre-amp
Output headphones Impedance	<0.3Ω
Power Consumption (Idle)	<15W
Power Adapter	100/240V AC to 22-30V DC
Dimension (WxDxH)	217mm x 206mm x 50mm
Weight	1.8kg

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