Pro-Ject Head Box DS2 B Headphone Amplifier

It Will Drive Anything with Ease

The market for hi-f- headphones has been expanding rapidly in the last years. New models and new driver designs have created a lot of excitement in audiophile circles. Al though today's headphones are able to produce outstanding sound, unfortunately the amplifiers that are feeding them are mostly mediocre. For example, planar magnetic headphones demand more current and simply need more power to be driven to their full potential.

Pro-Ject's new Head Box DS2 B headphone amplifier will drive anything with ease, because it outputs a powerful 1100 mW into 33 ohms. Additionally, the Head Box DS2 B has three different current settings to match any headphone type and features four gain settings for high impedance headphones as well as sensitive in-ear monitors. You won't find a more versatile, better sounding head amp for anywhere near the price.

Fully Balanced Dual Mono Design

The fully balanced dual mono design is completed with a phase inverter to convert any unbalanced signal to a balanced one straight at the input. A balanced four-pin XLR output on the front guarantees perfect signal transmission to your headphone.

Dead-Silent Noise Floor

In the output stage, the highly acclaimed Texas Instruments TPA6120A2 chip has been implemented for best possible power handling, which results in superior sound and a near dead silent noise floor. A premium Blue ALPS volume control sounds great and feels good in your hand.

Dual Front-Panel Jacks – Use Both at Once!

Both outputs on the front can be used simultaneously for shared listening experiences: the single ended 1/4" output jack and the balanced four-pin XLR balanced output jack. Listening alone is fun, but sometimes it is even more special when you can share your listening with someone close to you. This feature is also great for comparing headphone models.

Pure Pleasure in One Compact Component

The Head Box DS2 B is able to adjust to every headphone in your collection: hard to drive dynamics, current hungry planar magnetics and sensitive in ear monitors! A choice of silver or black finish with wooden side panels give the DS2 B a distinctive look. It's pure pleasure in one compact component.

Product Features

Enough power to drive demanding headphones
Dual mono design
Four gain settings to match any headphone
Three current settings to deliver best sonics
Single ended (1/4") and balanced (4 Pin XLR) headphone output
Both outputs usable simultaneously
Phase inverter built in at input stage to convert unbalanced signal to a balanced one for superior sound
Output stage realized by two TPA6120A2 chips
BLUE ALPS potentiometer for best volume control
Available with wooden side panels
Available in silver or black

Product Specs

Power output: 2x 550mW (into 33ohms, both channels driven)
Signal-to-noise ratio: 98dB (A weighted, full output)
THD +N: < 0.02%
Gain (unbalanced): 0, 3, 9, 12dB (without load)
Gain (balanced: 6, 9, 15, 18dB (without load)
Frequency response: 20Hz - 20kHz (+-0.2dB)
Analog inputs: 1 pair RCA/Cinch sockets line, 1 pair XLR input
Headphone output: 1x 6.3mm (single ended), 1x 4 Pin XLR (balanced)
Analog loop outputs: 1 pair RCA/Cinch, 1 pair XLR
Headphone impedance: 8 - 600ohms recommended
Trigger in/out: 12V
Power supply: 18V/1A DC
Standby Power consumption: < 0.5W
Dimensions W x H x D: 8.1" x 2.8" x 8.6"
Weight: 3.2 lbs. (alu) without power supply; 4.3 lbs. (wood) without power supply