Product details:

The TubeHead headphone amplifier is one of the best sounding headphone amps available on the market. The sound is so clear and warm that you will never want to take your headphones off. The power output is 180 mW @ 32 ohm at 0.03% THD. The Tubehead by supports headphones from 16 ohms all the way up to 600 ohms making this headphone amp universal. If you want the best product from an honest company this is.