McIntosh C20 Maintenance Manual page 6

Your C20 will give you many years of pleasant and satisfactory
performance. If you have any questions concerning the operation
or maintenance of this pre-amplifier please contact:
Customer Service
Mclntosh Laboratory Inc.
2 Chambers Street
Binghamton, New York
Our telephone number is 723-5491.
The direct dial area code is 607.
LABORATORY INC.
2 CHAMBERS STREET, BINGHAMTON, N. Y.
Phone-Area Code 607-723-5491
2M-AA117-201 5-62
BE012003