Help amp for Vandersteen 3A sig w/ Anthem pre 2L

At your budget point, I would suggest a McCormack amp. You could certainly squeeze a DNA 125 in there. They really do well with Vandersteen's. Vandersteen's are not as easy a drive as some suggest. The DNA series have the grunt.
One of the better amps and the one I used with the 3a Sigs is the Theta Dreadnaught I. Unfortunately, they only show up every blue moon.
Richard V. has backed off biamping the speaker but a biwire is a must. I used a 4 channel Dread and didn't think it sounded as good as just biwiring 2 channels of the amp.

Thanks for the imput. I have really put your suggestions to the top of my list. Do you think that any of these amps, (Theta Dreadnaught, McCormack or ATI) specifically pair better with the Anthem pre 2L that I own. I have read other posts where people confirmed the compatiblity of these recommended amps with Vandersteen, but I am wondering if I am sacrificing anything by tring to force the Anthem into the equation...

I personally have had no experience with the Anthem pre so I'll reserve comment to someone else.
I can say that a tube preamp seems to balance out well with a SS amp with the Vandersteen's. I used an Audible Illusions pre for years with good success.

Dylano, Richard Vandersteen will guide you on bi-amping his speakers. His crossover requires a seperate ground path for BOTH sets of terminals. DO NOT use multi-channel amps with Vandys. Both Mr. Hardesty and I found out the hard way this does not work! An Aragon 8008bb would work! Sorry, just kidding! The McCormack is a good suggestion, I assume 2Wqs are in your future? The sub crossover makes life much easier on any amp you do choose. My 3A Sigs and 2Wqs are sounding very close to as good as anything I have heard after MUCH hard work. Happy Listening, Z.