Described as a "40W" output for 6L6 family tubes. Standard push-pull primary with three wires; red center tap, brown and blue plate leads. Has output taps for both 8 and 4 ohm speakers; black common, 8 ohm green wire, 4 ohm green/yellow wire. Standard upright end bell construction, measures approx. 3"X2.5"X3.25" tall, mounts to chassis with four screws through slotted holes in the four feet, mounting centers approx. 2.25"X2". We recommend installation by an amp tech. Brand New. Genuine Fender 0050438049. UPC 885978546787.