Ferrum

Ferrum - OOR Analogue Headphone Amplifier

Product SKU: OOR

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Product Details from the Brand

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OOR, the only headphone amplifier with a soul

OOR fully Balanced analogue headphone amplifier

  • Proprietary discrete power amp technology
  • Proprietary 4-pin Ferrum connector for HYPSOS
  • Balanced 4-pin XLR and unbalanced RCA headphone outputs

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.

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. We use what we dubbed our 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 focused 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.

Features

  • Look and behold the understated looks of OOR’s front, only to camouflage it's intricate design laid bare on the rear. 100% analogue, 100% natural, 100% musical
  • Fully balanced from A to Z, even right after the RCA inputs, to get the max out of any headphones. Brightness of the logo on OOR’s front can be dimmed for ease on the eyes. Ferrum Power Link for ultimate connection with HYPSOS
  • Combine OOR with HYPSOS to unleashing unheard musicality. Together they will excel above and beyond
  • Unique output cable design: two wires delivering the power and two wires providing the feedback to ensure flat voltage at every moment. We named this technique Ferrum Power Link (FPL) and it eliminates the harmful effects of the cable's resistance effectively improving transient response. The current delivery speed at the powered device's input is significantly improved
  • To get the most out of OOR you can connect it with HYPSOS using our proprietary Ferrum Power Link DC power cable. If the FPL cable isn't already packaged with the HYPSOS, it can be ordered separately

Specifications

  • Gain (dB): balanced -4 dB, + 6dB, +16 dB / single ended -10 dB, 0 dB, 10 dB
  • Operation: Fully balanced, proprietary discrete power amp technology
  • Inputs: XLR, RCA, 2.5 mm DC connector centre positive, proprietary 4-pin DC connector
  • Outputs: Balanced 4-pin XLR, 6.35 mm jack
  • Frequency Response:  20 Hz – 100 kHz 0.1 dB
  • Output Power Single Ended: 400 mW into 300 Ω, 2 W into 60 Ω
  • Output Power Balanced: 1.600 mW into 300 Ω, 8 W into 60 Ω
  • THD + Noise: TBA
  • Input Impedance: 94 kΩ
  • Output Impedance Single Ended: 22 Ω on pre-amp
  • Output Impedance Balanced: 44 Ω on pre-amp
  • Output headphones Impedance: < 0.3 Ω
  • Power Consumption: Idle <15 W
  • Power Adapter: 100/240 V AC to 22-30 V DC
  • Dimension (W x D x H) (In/cm): 8.6 x 8.1 x 2.0 inch / 21.7 x 20.6 x 5 cm
  • Weight (kg/lbs): 1.8 kg / 3.97 LBS

Product Reviews

Ferrum - OOR Analogue Headphone Amplifier

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