AC Adapter. Out: 4.5VDC or 6VDC 550mA. 5V or 6V 550mA.
RADIO SHACK 273-1664
Power supply. AC Adapter. Output: 4.5VDC or 6VDC 550mA. Polarity is reversible. Comes with 3 power adapters, 1.3mm, 1.7mm and 2.1mm. Constant-voltage regulated output helps reduce hum. (May be used in place of RS. CAT. #16-2018).