The volume is smooth and moderately heavy, and it is a headphone amplifier with a simple, uncomplicated, natural, and comfortable neutral sound. The exterior is dull and has a feeling of use. Serial AA004639 (Takahashi Nobuyuki)
Maintenance information: 2026.2.25 Operation confirmed
Accessories: instruction manual power cable
Main specifications: 3 Hz to 300 kHz 8 ohm to 10 kΩ 106 dB W160 × H58 × D283 mm 2.2 kg