Creek OBH-18 Phono Preamp

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.

Technical 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 22 dB Mates well with cartridges 2.5 mV - 5 mV output Power supply voltage 24V DC / 30 mA Weight 3Kg Size L/W/H 150 x 100 x 66mm