- Two models: 820mW and 1.5mW in 30 ohms
- Head Box DS3 B is made for more demanding headphones
- £329 (approx $442 / AU$660) / or £629 (approx $845 / AU$1,265)
Pro-Ject has introduced two new headphone amplifiers, the Head Box DS3 B and the Head Box S3 B. They are the first models in a new generation of amplifiers, and they are fully balanced.
With fully balanced, Pro-Ject means that you don’t just get balanced plugs for your headphones. The entire audio journey is balanced, which should reduce noise and improve stereo separation between the left and right channels. The result, Pro-Ject says, is cleaner, more detailed and more spacious sound.
Of course, the amplifiers also work with unbalanced headphones, and there are line-level inputs with RCA and XLR for easy connection to other devices.
Pro-Ject Head Box DS3 B and Head Box S3 B: key features and prices
These are both powerful amps, although Pro-Ject says they’re more interested in the real world than big numbers on a spec sheet. Nevertheless, the Head Box S3 B delivers up to 820mW into 30 ohms, while the Head Box DS3 B is even more powerful with 1.5mW into 30 ohms, more than enough for even very demanding headphones.
The main difference between the two amplifiers is that the Head Box S3 B has an integrated amplifier, while the Head Box DS3 B has a fully discrete amplifier design that promises extra warmth and more power. Both are made in metal enclosures and are available in a choice of black or silver.
RRP for the Head Box S3 B is £329 / €399 (approx $442 / AU$660) and the DS3 B is £629 / €699 (approx $845 / AU$1,265). Both models will be available this month, January 2026.
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