Teajay:
I've never compared any Pass's to my DarTZeels. Sorry I can't help on that front. A friend of mine has an older X-150, and I've heard a few Pass preamps, the X-Ono, X-350, 350.5, and X-600. So I'm fairly familiar with the line. Personally, I love Pass products. The amps run exceedingly hot, but I find that they straddle the line between tube and solid state as well as any product I've ever heard. In that respect, they're very similar to the Darts. Nelson is one of the most brilliant designers out there and has been at this for a long time. He definitely knows his stuff. If I hadn't discovered the DarTZeels, I may well have wound up with a pair of the X-600s or 350.5s.
I've never compared any Pass's to my DarTZeels. Sorry I can't help on that front. A friend of mine has an older X-150, and I've heard a few Pass preamps, the X-Ono, X-350, 350.5, and X-600. So I'm fairly familiar with the line. Personally, I love Pass products. The amps run exceedingly hot, but I find that they straddle the line between tube and solid state as well as any product I've ever heard. In that respect, they're very similar to the Darts. Nelson is one of the most brilliant designers out there and has been at this for a long time. He definitely knows his stuff. If I hadn't discovered the DarTZeels, I may well have wound up with a pair of the X-600s or 350.5s.