The bottom box in the schematic below shows a mid-fi rig comprising my Blackstar Series One 45 combo at centre, feeding my two 50w Hughes & Kettner Switchblade combos for the side channels and to add fx.
You can substitute any of my other amps for the centre channel, even down to the Blackstar one-watt HT1 micro head or my vintage Fender Champ. All sound great in this configuration.