Pro-Ject Head Box S2 Headphone Amplifier
- Free Mainland UK Shipping on orders over £100
- Official Hi-Fi Retailer since 1973
- Usually in stock and dispatched in 1-5 working days
We offer free delivery on all orders over £100 to mainland UK. Orders under £100 are subject to a £6.50 shipping charge.
Delivery is available across mainland UK. If you are located outside mainland UK and would like a shipping quote, please get in touch before placing your order.
We aim to dispatch in-stock items as soon as possible provided that we physically have the stock - but please note that sometimes we have to order from our supplier for certain products, in which case delivery should take place within 1-5 working days of the order being placed.
Tracking details or estimated delivery timescales will be provided once your order has been processed. If there are any delays due to stock availability, we will contact you as soon as possible with the option to wait or receive a full refund.
Please note that certain products may be subject to specific distance selling or delivery regulations. If you are unsure about a product or its delivery terms, we recommend contacting us before purchase.
You can cancel your order within 14 days of receiving your goods, in line with UK distance selling regulations. Once you’ve notified us, you have a further 14 days to return the item. Please contact us by email, phone or in writing before sending anything back.
Items must be returned in original condition and packaging, including all accessories, manuals and any promotional items. The cost of return is your responsibility and we strongly recommend insuring the goods, as refunds cannot be issued for damaged or incomplete returns. If items show excessive handling, are missing components, or cannot be resold as new, a reasonable deduction may be made.
Please note that used headphones (for hygiene reasons) and custom or special-order items cannot be returned. If you need assistance arranging a return, we’re always happy to help.
Product Summary
The Pro-Ject Head Box S2 is a compact headphone amplifier designed for customers who want better sound quality and more drive than the headphone outputs built into many laptops, phones or standard hi-fi components can provide on their own. It is a strong choice for listeners who want a simple but worthwhile upgrade for private listening without needing a large separate amplifier.
A big part of its appeal is how easily it fits into a wide range of systems. With a standard RCA input, dual front-panel headphone outputs and a bypass RCA loop output, the Head Box S2 can slot neatly into desktop audio setups as well as traditional hi-fi systems. Its small footprint also makes it especially useful where space is limited, without giving up the sense of a proper dedicated headphone amp.
It is also designed to get more from a broad range of headphones. Pro-Ject’s low-noise circuitry, low distortion figures and healthy output power help the Head Box S2 sound clean, dynamic and confident, while the aluminium and metal sandwich casing helps protect the signal from unwanted interference. For customers wanting an affordable, compact and genuinely capable headphone amplifier, the Head Box S2 is an excellent option.
Key Benefits
- Dedicated headphone amplification helps deliver a clearer, more dynamic and more engaging sound than many built-in headphone outputs
- Healthy output power makes it easier to get strong performance from a wide range of headphones
- Dual 6.35 mm and 3.5 mm headphone outputs make it convenient for both full-size headphones and smaller portable models
- Both headphone outputs can be used at the same time, making shared listening easy
- Compact size makes it simple to add to desktop systems and smaller hi-fi setups
- Low-noise, low-distortion design helps preserve detail and control for more enjoyable long listening sessions
- RCA loop output makes it easier to integrate into an existing system without losing connection flexibility
- Aluminium and metal sandwich casework helps reduce interference and supports cleaner performance
- 2 years manufacturers warranty, extended to 3 years if registered with Pro-Ject within 4 months of purchase
Technical Specifications
Headphone Amplifier Details
- Product Type: Analogue headphone amplifier
- Output Power: 725 mW into 32 Ohms
- Signal to Noise Ratio: 110 dBV
- THD + N: 0.002%
- Gain: 11 dB
- Crosstalk: 68 dB
- Frequency Response: 20 Hz - 80 kHz (+/- 0.02 dB)
- Analogue Input: 1 pair RCA/Cinch
- Headphone Outputs: 1 x 6.3 mm jack, 1 x 3.5 mm jack
- Compatible Headphone Impedance: 8 - 600 Ohms
- Output Impedance: Less than 1 Ohm
- Analogue Loop Output: 1 pair RCA/Cinch
- Power Supply: 5 V / 0.5 A DC
- Standby Power Consumption: Less than 0.1 W
- Colour Options: Silver or black
Weight & Dimensions
- Dimensions: 10.3 x 3.7 x 12.0 cm (W x H x D)
- Weight: 0.365 kg without power supply
What’s in the Box
- Pro-Ject Head Box S2 headphone amplifier
- Power supply
- Product documentation
