OBH-18 MM Phono Pre-Amplifier

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OBH-18 MM Phono Pre-Amplifier by Creek Audio

OBH-18 MM Phono Pre-Amplifier
by Creek Audio

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Product Code:
Creek Audio
OBH-18 MM Phono Pre-amp
Creek Audio OBH-18 MM Phono Pre-amp
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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.

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Features||OBH-18 MM Phono Pre-Amp

Moving magnet phono stage
Compact design
Quality parts throughout
Specially designed power supply
R.I.A.A. frequency response correction
Connections: one pair RCA inputs and outputs
Black chassis with silver-finish front panel

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: 6.6 lbs.
Dimensions: 4" wide, 2.25" high, 6,125" deep

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SoundStageDirect Glossary


Vinyl records are able to capture the purest quality of recorded music in true form. This is possible because the initial recording is captured on an analog source (usually tape) for the ultimate in High Fidelity sound, it is then pressed onto virgin vinyl. Analog recordings capture the bottom end (or bass) while adding sweetness to the high end (or treble) better than any digital recording ever could. Analog systems are still commonly used before they are digitally transferred to CD. This means that the sound then is altered in the transfer process when CD's are produced. The word fidelity means accuracy and faithfulness. High Fidelity sound is faithful to the original sound made by the artist, capturing maximum accuracy of what was intended for the listener to hear. Vinyl records capture those sounds for the ultimate High Fidelity listening experience!

180/200 GRAM Vinyl LP

These vinyl records are produced with 180 or 200 grams of high definition premium grade virgin vinyl. This is a higher quality audiophile pressing than the typical vinyl record of 100-120 grams. These limited edition LP's are manufactured with the hi-fi enthusiast in mind. A 180 or 200 gram LP is sometimes also referred to as an audiophile pressing, there is a higher bass response and an even warmer High Fidelity sound. 180 or 200 grams LP's are typically manufactured in limited amounts and are considered collectables, commanding a higher price.


Typically, a vinyl reissue is a repressing of an original LP, usually extracted from the recording's master-tapes. In some cases, reissues are remastered to lower surface noise and improve overall sonics. Reissues help preserve the music of an original recording, especially when original LPs become unavailable or can no longer be found. Reissues can be pressed on a variety of thickness from 150 gram to 200 gram and offer a great opportunity for records collectors to own many classic recordings.

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