Crucial Audio Apollo 18 Operating Instructions Manual - Page 8

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Maintenance

Your Apollo-18 is designed to be relatively low maintenance and durable. From time to time, it will become

necessary to replace the two (2) 12AX7A vacuum tubes. This is a routine task, and Crucial Audio llc

recommends that this only be performed by qualified personnel. Dangerous voltages may be present on the

circuit board (even if the unit is unplugged from its power adapter), and the glass vacuum tubes are fragile

and can shatter. Please, refer tube replacement to a qualified and authorized technician.

Please, refer all technical support inquiries to Crucial Audio Customer Support. Product information,

Frequently Asked Questions, and other information can be found online at

Contact Information:

Crucial Audio LLC

PO BOX 277

Dagsboro, Delaware 19939

Tel/Fax 1-302-927-0090

Email:

URL:

Product Support & Contact Information