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OPERATIONAL NOTES
TUBE LIFE
You should expect extended life from the tubes in your MANLEY DIRECT INPUT 50/50 if you
adhere to the procedures described above and check your bias at least once every 2-3 months. We
stock all the tubes in these amplifiers should you ever need replacements (and at very reasonable
prices too!)
FUSES
The fuse used in your amplifier are standard 1/4" x 1 1/4" SLO-BLO types. The correctly rated fuse
has been installed at the factory for your country's voltage. If replacing a fuse, always unplug the
amplifier's power cord from the wall outlet and always use the exact same type and ampere rating
fuse as the one you are replacing. Failure to do so will void your warranty and can be a dangerous
fire hazard. NEVER replace a fuse with thick wire, tin foil, gum wrappers, or anything else other
than the correct fuse!