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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, ease of use, Ferrum Power Link, superior control, enhanced transparency, discrete design.

1,995.00  VAT included

Značky a série
SKU: p1_FRR_AMP_HAMP Categories: , Tag:

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

Additional information

Weight1.8 kg
Dimensions206 × 217 × 50 mm



Polish pioneer in the field of headphone amplifiers.

While exploring their roots, the new Ferrum team realized that the region where they were all born and worked for the last part of their lives has a history of craftsmanship. One of these crafts was driven by the very large iron deposits in the Warsaw region, which led to metallurgical specialization.

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