Creek OBH-21 (Mk 2) Headphone Amplifier


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Creek OBH-21mk2 headphone amplifier

The Creek OBH-21mk2 is long awaited successor to the ever popular OBH-21SE headphone amp, but with a new twist. In addition to offering superb headphone sound quality, the OBH21mk2 can also be used as an ultra high quality single input pre-amplifier with any stereo power amp of your choice.

Solidly constructed from aluminium extrusion for low vibration and shielding and available in black or silver finish, the OBH-21 mk2 is the ideal headphone amp for those audiophiles with low impedance headphones down to 8 ohms. Fully discrete electronic class A circuitry is employed for best possible sound quality, whilst audiophile quality components such as 27mm ALPS Blue volume potentiometer allow the units best possible performance to shine through.

Individual gain settings are found on the base of the unit to ensure the gain can be tailored perfectly to your headphones - this can also be achieved when used as a pre-amplifier.

On the rear panel are three pairs of RCA phono connectors - line input, which accepts analogue audio from CD player, Tuner, network player or turntable phono pre-amp, then a fixed line level output, and finally a variable output for use as a pre-amplifier.

The universal OBH Uni power supply can operate on worldwide power supply voltages between 100-240V, and comes with a range of local adaptors to suit plug variations.


OUTPUT POWER  > 100mW / 8 Ohms
> 160mW / 16 Ohms
> 200mW / 33 Ohms
> 210mW / 68 Ohms 
THD HEADPHONE OUT  < 0.002% from 20 Hz to 20 kHz at 0.5V into 68 Ohms 
 SNR HEADPHONE OUT 116dBA ref 1V, 107dBA at 12.5dB gain 
 THD PRE-AMP OUT <  0.0006% from 20 Hz to 20 kHz 
 CROSSTALK LINE OUT > -80dB, 10Hz – 20 kHz Line out 
CROSSTALK HEADPHONE OUT > -60dB headphone output – 33 Ohm
GAIN SETTINGS 0dB, 6dB, 10dB and 12.5dB
POWER CONSUPTION < 6 Watts at max power
< 0.5 Watts standby
POWER SUPPLY 24V DC  12 Watts max
              DIMENSIONS IN MM (WIDTH X HEIGHT X DEPTH)          95 x 60 x 180
WEIGHT   630 grams

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Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25