Well, as I mentioned, I loved the sound of the Constellation and the folks there are great. But it wasn’t a seller. People asked me why, and I heard everything from “oh, I saw the inside of those amps online and I’m not interested” to “I heard the build quality wasn’t great” to “I don’t like the looks.” All nonsense in my opinion, but the numbers don’t lie.
Sonically, the Constellation sounded most like tubes. They had sneaky power on tap too. Just when you think the amp would run out of juice, they kept on chugging.
I hate to say the Boulder is in another league, but it is certainly different in a good way. The build quality is second to none. That’s the truth. The sound is completely without fault in any area. Bass is tight and fast, mids are natural and beautifully rendered and the top end has all the detail, but is smooth. Very very smooth. The one thing I can say is that these Boulder amps have zero trace of solid state artifacts and characteristics. They sound like music. There is no region which sticks out - like puffy bass or a bright top end. Nothing to fault. The Boulders are dynamic and have seemingly endless power. That must be from the giant power cord! I think the sound can also be attributed in part to the magic of class A.
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