Buzz using 2 amps

[Skip T]

I play thru a Nash 400 and am trying to use a Polytone Mini-Brute to get a stereo effect. Using a Goodrich 120 pedal with 2 amp outlets. I get a "buzzing" sound using both at the same time. I have read posts on this problem before , but forget -- something about lifting one amp off the floor (?). Thanks ---- Skip

[Pete Burak]

You need to get a 3-to-2 adapter plug on one of the amps. This effectively "lifts the ground" of one amp and should stop the buzz.
How do you like the Polytone?