XTONEBOX Silver 6011, Руководство пользователя, Страница: 9 / 12

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Phono circuit was intended for use with turntables that have a standard MM
(Moving Magnet) phono cartridge with a rated impedance of (approximately)
47,000 ohm. This circuit amplifies the signal giving it extra gain and RIAA EQ, so you
shouldn't plug in any other device in PHONO input. The signal processing made by the
phono circuit is only needed in case of using a turntable.
When PHONO source is selected you should maintain your mobile phone
away from the amplifier . It could interfere and produce noise at the output.
The Silver 6011 Tube Amplifier is delivered with the audio valves already
installed (four ECC83/12AX7). However, since you may want to replace them in the
future, we have included this guide to make it easier for you.
REMEMBER: Wait at least 2 minutes for the audio valves to get cold before moving
the unit.
REMEMBER: Power off the unit and disconnect it from its power source before
manipulating it.
This type of chassis has an open frame with the audio valves exposed to the
outside, which can be inserted and removed whenever you want.
First, hold tightly the cabinet and remove the old valves. Then, for insertion, you
must look at the position of the pins relative to its socket. The valves must be securely
fixed. The use of gloves is recommended to avoid scratching or spotting them.