The Pro-Ject Head Box S is an audiophile headphone amplifier at an affordable price! Top-notch sound quality with a practical setup, in one box. It is a perfect upgrade compared to all the headphone connections you might find on conventional amplifiers. The Box S input connection can be made from, for example, a Rec out output of your amplifier. Due to an integrated (loop) out on the Box S, you do not lose connection with your recording device. High-quality amplification circuits are used to guarantee the best possible headphone amplification and make listening to your favorite music a pleasure! The Box S offers natural dynamics, transparency, and pure audiophile enjoyment! 

• 6.3 mm input jack on the front.
• Suitable for headphones with low or high impedance.
• Full metal casing protects against interference 
• RCA stereo input 
• RCA stereo loop. 
• DC power supply 
• On / Off switch on the front.