Ferrum OOR Headphone Amplifier
FERRUM OOR HEADPHONE AMPLIFIER RELEASED
Ferrum is a polish HiFi brand, manufactured by HEM, whose first product was the HYPSOS power supply, which we have just reviewed.
The Ferrum OOR Headphone Amplifier is 100% analogue and the brand say it “will drive any headphone to the max of its capabilities”.
FERRUM OOR HEADPHONE AMPLIFIER
Ferrum has a design language of ‘keeping it simple’ and as such, the Corten steel and anodized aluminium OOR only needs three knobs on the front panel to control the music. One for gain settings to match your headphones, be it over-ear or in-ear, one to choose between balanced or unbalanced input and the most prominent one for controlling the volume.
POWER SUPPLY
A great deal of attention was given to the design of the internal power supply, which is fed by the included and specially selected AC/DC power adapter. The Ferrum OOR is a truly balanced design of preamplifier stage coupled with their proprietary discrete power amp technology in combination with the implementation of selected components.
The Ferrum OOR can be upgraded even further using the Ferrum HYPSOS Hybrid Power System together with the proprietary Ferrum Power Link (FPL) connection.
FERRUM OOR SPECIFICATIONS
Gain (dB): balanced -4dB, +6dB, +16dB
single ended -10dB, 0dB, 10dB
Operation: Fully balanced, proprietary discrete power amp
Inputs: XLR, RCA
2,5mm DC connector centre positive
proprietary 4-pin DC connector
Outputs: Balanced 4-pin XLR
6,35 mm jack
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: < 0,0003% / -110dB, 100mW into 50 Ohm
on balanced output
Input Impedance: 94kΩ
Output Impedance Single Ended: 22Ω on pre-amp
Output Impedance Balanced: 44Ω on pre-amp
Output Impedance Headphones: < 0,3Ω
Power Consumption: Idle <15W
Power Adapter: 100/240V AC to 22-30V DC
Dimension (W x D x H cm/in): 21,7 x 20,6 x 5 cm / 8.6 x 8.1 x 2.0 inch
Weight (kg/LBS): 1,8 kg / 3,97 LBS
ABOUT HEM
Founded more than twenty years ago in Warsaw, Poland by Marcin Hamerla, HEM set out to operate at the forefront of audio technology. Having done several projects for the Polish government, HEM’s focus shifted to digital technology in collaborating with Mytek Digital. Experimenting with hi-res audio and Master Quality Authenticated files in particular, HEM manufactured Digital to Analogue converters under the Mytek brand. Apart from being responsible for manufacturing Mytek, HEM distributed the brand in European and Far Eastern markets. Another brand in HEM distribution is Clarus Cable. HEM recently introduced a new and completely in-house developed brand of HiFi products under the name Ferrum.
PRICE
1,995 EUR/USD
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