When I had my first 1967 Sunn Sentura II with the JBL D-130's, I used to get a lot of people saying that they thought the amp was loud....and then when I told them it was only 60 watts, they couldn't believe it. I believe it's becaue the Sunn amps that Conrad made were so efficient - very clean and clear. And a clean, clear amps seems to sound louder than one that isn't. We also have to remember that Conrad was into high quality, high fedility music reproductin before he started building amps. That drive for clean quality sound found it's way into evey Sunn amp in the 60's. Thanks, Conrad.
Rob