Matched Pair tubes

In amps with multiple power tubes [more than one for each channel] how do you split the matches one match per channel or one tube per channel?? example x1 x1 left channel and 2x 2x right channel OR 1x 2x left channel and 1x 2x right channel??? BobbyM
Usually there is a hi gain and a low gain set. both in hi gain l&r should match--thus same for low gain pairs. Usually these are different tubes altogether.i.e. 12ax7--12au7. Check your manual
Avguygeorge is refering to input and driver stages, and is very much correct. Same rule applies to the output valves. 1x 2x left, 1x 2x right. Somebody correct me if I'm confused.