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If the cable needs repair, do not plug the amplifier in. Have the amplifier repaired immediately by a qualified service technician. 5. Unplug your amplifier when not in use for extended periods of time. 6. Turn amplifier power off when not in use. 7. The outside of the amplifier may be cleaned with a dry cloth only. Do not use water or chemicals to clean. 8. This unit contains digital circuitry and may cause interference if placed too close to radio or television receivers. 9. Do not operat