2
• Introduction ……………………………………………………………………… 2
• Important Safety Instructions …………………………………………………… 3
• Handling Precautions …………………………………………………………… 6
• Accessories ……………………………………………………………………… 8
• Front Panel Functions …………………………………………………………… 9
• Rear Panel Functions ……………………………………………………………10
•Vacuum tube replacement …………………………………………………… 12
• Cautions regarding Handling ……………………………………………………15
• Maintenance ………………………………………………………………………16
• Troubleshooting …………………………………………………………………17
• Specifications ……………………………………………………………………18
Thank you for purchasing the TUBE53.
Please refer to this Owner’s Manual to use your TUBE53 safely, and in the best pos-
sible way. It is recommended that you keep the carton box and the packing material
available for future transportation needs.
•
Though it is a vacuum tube amplifier, the TUBE53 achieves a 20W + 20W (8Ω)
output and high response, that can drive the analog signal with ease from even
digital media players.
•
The TUBE53 uses two 6L6GC tubes per channel in a push-pull configuration, and
low-distortion Mullard type phase inverting circuitry design.
•
The TUBE53 achieves hi-fidelity music reproduction with minimum reliance on
negative feedback circuitry.
•
The output transformer, which uses orient core materials, achieves a straight
sound quality with minimum phase misalignment. The TUBE53 uses a troidal
transformer, featuring superior rise characteristics, for its power supply. Noise is
thoroughly eliminated by solidifying the transformer with resin and covering it
with a steel casing.
•
The TUBE53 uses selected high quality components to draw out the circuitry’s
full potential, such as low-distortion volume control, electrolytic capacitors and
resistors with high information processing ability and low noise.
