Audio research ref-250 mono power amp

The Reference 250 features a more modern, monochromatic appearance, including a new front panel with a small aluminum power button. An analog meter with adjustable illumination is set in the front panel is capable of displaying power output and tube bias settings.

A new low turbulence fan provide effective yet silent cooling. Internally, the Reference 250 is outfitted with the KT120 output tubes and a bulk power supply 50 percent larger than its predecessor (REF 210). Connections include accommodation for 4, 8 or 16 ohm speakers, an XLR input as well as 12 volt trigger connections.

TUBE COMPLEMENT

(3 matched pairs) KT120 power output

(1 matched pair) KT120 driver

(2) 6H30 gain stage and regulator driver

(1) 6550C regulator