I have a pair of bridged Rowland Model 1's driving Snell Type A/IIIi's. The speakers are 4ohm, so the bridged amps see, effectively, a 2ohm load. While these are the only amps I have listened to with these speakers, I am extremely happy with the sound. I talked with Jeff Rowland before purchasing the amps, regarding whether or not I should bridge them or biamp the speakers. He suggested that bridging them would be the best option, as they were designed from the ground up with bridging in mind.