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Creek OBH-18 MM Phono Preamp
With modern amplifiers expected to cater for so many new devices, the phono capability has frequently been one of the features to disappear. At Creek Audio, the engineering team has always been aware of the benefits of vinyl – that is why the company continues to provide a number of phono stage options.
The OBH-18 was released in late 2003. The function of the OBH-18 is to boost the level and correct the frequency response of a low level signal coming from a moving magnet phono pick-up on a conventional turntable. The signal required by most modern amplifiers is described as being 'LINE' level, which is, in technical terms, between 200 and 500 milli-Volts with a flat frequency response. Unless your amplifier has a specific 'Phono' or Disc input, the level will be too low and the frequency response will be wrong. The OBH-18 is designed to boost the signal and introduce an R.I.A.A. frequency response characteristic.
The OBH-18 looks the part too! Designed to complement the Creek range of amplifiers, tuners and CD players, the new OBH range features an impressive solid aluminium front panel in a silver finish. The remainder of the 150mm casing is black so the products all but disappear.
Specifications:
Gain 37 dB
Frequency Response 20 Hz to 20 kHz ± 0.25 dB
Signal to Noise Ratio - 83 dB
Total Harmonic Distortion < 0.03%
R1AA deviation ± 0.5%
Output 250 mV
Output Impedance 100 Ohm
Input sensitivitY / impedance 3.5 mV / 47K ohm / 220pF
Overload margin 25 dB
Mates well with cartridges 2.5 mV - 5 mV output
Power supply voltage 24V DC / 30 mA
Weight 3Kg
Size 15 x 10 x 66cm
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