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The Creek Audio OBH-21 MK2 Dual Output Headphone Amplifier with One Preamp-Out is a miniature integrated amplifier designed to simultaneously drive two low impedance headphones up to 8Ω from a line level source or function as a single input preamplifier. The unit is housed in a black metal case with an aluminum front panel and sound absorbing cushioned metal disc feet.
The front panel features two 1/4" TRS input jacks and an audiophile-grade ALPS 27mm blue velvet volume control. The bottom of the case features user adjustable gain setting switches. The back panel of the amplifier features three pairs of stereo RCA sockets- one for line level input, one for looped line level output, and one for a variable pre-amplifier output with independent gain control from the volume knob.
It can be used for both professional and HiFi applications and includes an OBH-Uni multi-region 24 VAC 0.5A power supply adapter with snap-on 2-pin figure-eight plug connector adapters for Europe, the UK, and the USA. It provides stable output from any input mains voltage from 100 to 240 VAC. The unit draws less than 0.5W when idle and operates silently without the need for an internal fan.
In the Box
Creek OBH-21 MK2 Dual Output Headphone Amplifier with One Preamp-Out
Europe Power Adapter Plug
UK Power Adapter Plug
US Power Adapter Plug
Limited 2-Year Warranty
Table of Contents
> 100 mW at 8 Ω > 160 mW at 16 Ω > 200 mW at 33 Ω > 210 mW at 68 Ω
8 to 1 kΩ
> 7 kΩ
10 to 50,000 Hz
Headphone Out: < 0.002% from 20 to 20,000 Hz at 0.5 V into 68 Ω
Pre-amp Out: < 0.0006% from 20 to 20,000 Hz at 0.5 V into 68 Ω
Signal to Noise Ratio
116 dBA ref 1 V, 107 dBA at 12.5 dB gain
Line Out: > -80 dB from 10 to 20,000 Hz Headphone Out: > -60 dB headphone output at 33 Ω