The clas in my setup is the old one, the new -r is cheaper than that was. The -r is 499$. According to David of Cypher the initial problems of the sq of the new -r has been fixed, and it should now sound as least as good as my old solo according to him. The -db is 699, but I dont consider it since I carry my setup with me and don't use the computer much as a source. If I do I use the Intruders dac. The clas does hammer that, so if you will use the computer much as the source the -db might be worth the difference in price. As for balancing the source, Ray says that one gets full balanced benefits on the output with single ended input, so I don't know if it's worth the cost. Never heard it myself, so I am only speculating on that.
To be perfectly honest, to my ears using the 334s that dont need much juice, the clas is the most important game changer in the setup, more so than the amp. (Different story with fullsize high impedance cans)However when given the nice signal from the clas the intruder performs perfect. The clas really makes the music come alive and to me it is worth every penny. With the 334 it is much easier to tell when the clas is there or not, than it is to tell the difference if the intruder is there or if it's straight out of the ipod.
I gather this tell us that the Intruder does well, amplifying without disturbing the sound. But **** in gives **** out. The clas changes this to bliss in bliss out.
Thanks for your quick review, sounds like I am going to put some $$$ aside for a clas. For me though I won't lug around the stacked amp and dac just too much gear for my taste. I want to build a firepower setup on my computer desk however I wanted a better dac than the intruder (no offense, it's a good one), a reference one which I want to plug into the balanced input of the intruder to finally connect my balanced iem cable. Now that sounds like I setup that won't get me out of my house lol. One last thing though I read that one needs to have at least a more recent iPod or other newer devices to take advantage of the clas USB input (USB Audio) so more gear to buy. It just never ends