Sundown A-50 guitar amp. Designed by Dennis Kager. Two effects loops, one for each channel. Two 6L6 power amp for ~45 watts. The preamp is based on a plexi/older bassman circuit. Kager also designed the Pignose tube amps, the A-50 is very similar to the Pignose G40V. No footswitch but I believe it uses generic latching type footswitch.