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Equipment > Phono Preamps > Creek - OBH-15 MkII Phono Preamp
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CREEK - OBH-15 MkII Phono Preamp

Phono Preamps

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Item: ACROBH152

Creek OBH-15Mk2 Phono Preamp

The Creek OBH-15 mk2 phono preamp features a completely new circuit design, with a discrete transistor MC and integrated circuit MM stage. Unlike its predecessor, the new phonostage has multiple gain settings and matching capabilities for capacitance and resistance. The signal required by most modern amplifiers is described as being line level which is, in technical terms, between 200 and 500 milli-Volts sensitivity with a flat frequency response. Unless your amplifier has a specific "Phono" or Disc input, the level will be too low to play vinyl and the frequency response will be wrong. The OBH-15 mk2 is small device designed to boost the signal and introduce an R.I.A.A. frequency response characteristic to provide the most accurate reproduction of the recording. The OBH-15 mk2 is small and very stylish. Designed to complement the Creek full sized range, it has an impressive solid aluminum front panel with either a silver or black finish. Its extruded black aluminum case is fitted with turned aluminum disc feet and sound absorbing Bumpons.

With modern amplifiers expected to cater for so many new source devices, the Phono capability, once very common, is one of those built-in features that has disappeared in recent times. The engineering team at Creek Audio has always loved the benefits of vinyl records and continues to work on technical and sonic improvements to its range of Phono amp options, be it the stand-alone OBH or Wyndsor or plug-in Sequel types. Tasked with designing a replacement for the long running OBH-15, the team came up with some valuable improvements and additional features; surprisingly they made them all fit into the original OBH-sized casework.

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THD+noise at 2Vrms output:
    (40dB gain) @ 1kHz = 0.002%
    (40dB gain) @ 10kHz = 0.003%
    (50dB gain) @ 1kHz = 0.007%
    (50dB gain) @ 10kHz = 0.007%
    (60dB gain) @ 1kHz = 0.005%
    (60dB gain) @ 10kHz = 0.005%
    (70dB gain) @ 1kHz = 0.011%
    (70dB gain) @ 10kHz = 0.012%

Channel Separation
    MM (all gains) 1kHz = >70dB
    MC (all gains) 1kHz = >70dB
Frequency Response: 0.5Hz – 100kHz (+/-0.5dB)
    MM (40/50dB gain): 76/66dB
    MC (60/70dB gain): 77/70dB
Overload Margin:
    MM (all gains): [email protected][email protected][email protected]
    MC (all gains): [email protected][email protected][email protected]
Output level: 6.1V rms Maximum
Output Impedance: 100 Ohms
    MM: 40dB/50dB
    MC: 60dB/70dB/80dB
    MM: 100pF or 200pF plus 47k Ohms
    MC: 100pF or 1100pF plus 100 Ohms or 510 Ohms

Dimensions: 4" x 2.5" x 6"
Weight: 2.2 lbs.
Power consumption: 3 Watts
Mains voltages: 100V to 250V AC 50/60Hz

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