* Since the built-in battery cannot be used due to deterioration, it is only driven by the included AC adapter. This is a portable headphone amplifier that uses a vacuum tube (subminiature tube) to amplify the signal. Since it has driving power, the Sennheiser HD800, which has an impedance of 300 ohms, also drives well. The clear and powerful sound that overturns the image of a tube amplifier is impressive (Kojima Yosuke)
Accessories: AC adapter
Main specifications: 1 input (3.5 mm stereo mini), 2 headphone outputs (6.3 mm stereo/3.5 mm stereo mini)