<p>HA400PRO headphone amplifier is used to increase the output power of some music equipment. For music enthusiasts, headphone amplifier is a very useful device. It not only plays the role of amplifying power, but also can be used for tuning, which can make the music details and control tension of mid-to-high-end headphones more outstanding</p> <p>High-quality analysis, unimpeded listening, one-input and four-output stereo headphone amplifier</p> <p>Each signal is finely amplified, and the sound quality and tone are modified on the basis of increasing the output power to provide high-quality audio enjoyment</p> <p> control, no interference Each channel has an volume control knob to finely amplify each signal without interfering with each other</p> <p>Small size, easy to carry</p> <p>Name: Headphone Amplifier</p> <p>Model: HA400 PRO</p> <p>Channel: 4 channels</p> <p>Plug Type :EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so o</p> <p>Colour:As Shown</p> <p>Material:Aluminum Alloy</p> <p>Voltage: AC110-240V</p> <p>Package Contents:</p> <p>1*Headphone Amplifier</p> <p>1*Power Adapter</p> <p>1*English manual</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>