The Creek OBH-21 headphone amplifier eliminates the need to use a full sized integrated amplifier to boost the audio signal when only headphones are used. An average output level CD player or tuner can be connected directly to the input of the headphone amplifier. This is much more convenient and can improve performance for headphone listening compared with larger integrated amplifiers.
The OBH-21 incorporates advanced circuitry utilising high grade op-amps for signal amplification, providing the capability to drive headphones with impedances ranging from 30 to 300 Ohms without a problem. Gain (level) will be greater for lower impedance headphones.
There are two 1/4" (6.3mm) stereo headphone jacks on the front panel. The matching impedance for each of these sockets is slightly different which allows for better individual matching. When using two sets of headphones, the impedance will be the same for both. The output level can be adjusted by an analogue volume potentiometer coupled to a solid metal control knob on the front panel. The OBH-21 has one pair of stereo inputs using stereo RCA (Phono) sockets on the rear panel. To make connection to another amplifier easier, there is another pair of sockets which can patch the input signal through to another amplifier. This is especially useful if the OBH-21 is used in series with the tape loop of a pre-amp or integrated amp. It is suitable for any line level analogue source.