Amps to drive Vandy 3A signatures

Pair of McCormack DNA-0.5s run in vertical bi-amp mode. Should be able to pick up 2 DLXs for about that price. Lots of current, nice sweet sound, actually better sounding than 1.0s (I've had both with these speakers) and clear upgrade path via SMc Audio by amp designer.

I am using the Bryston 4B-ST amp to drive my Vandy 3A Sigs, and it's an excellent combination. There was a 4B-ST for sale here on Audiogon recently for $1350, and there is currently a 4B-SST for sale for $1650 (the newest version of the 4B). I have also used an Adcom 5500 to drive the 3A Sigs, and while it lacks some of the transparency and dynamics of the Bryston, it still does a good job and can be purchased used for around $750 (sometimes less).

The good news about the Vandy 3A Sigs is that they are not overly fussy about the amp driving them, although they are good enough speakers to easily reveal the qualities of better electronics as you go up in price. The three characteristics required of a good amp for the 3A Sigs are:
1. ability to effectively handle relatively low impedance speaker loads (the Vandy 3A Sigs are nominally 4-6 ohm speakers, but they dip as low as 3 ohms);
2. sufficient power and current delivery -- 150 wpc is enough in smaller rooms (particularly if you have subwoofers) -- if your room is of moderate size, and you listen at less than "ear-bleed" levels, you will probably find that the Bryston 3B-ST or 3B-SST will work very well with your 3A Sigs;
3. good filter capacitance -- based on my experience with several models of Vandy speakers, I think that 30,000 mfd per channel is enough, although 40,000-50,000 mfd per channel is better.

One other amp that you should put on your "short list" is the Rotel 1099 (I think this is the 2-channel amp that retails for $1995). This is one very fine, high-power amp, and you can often get it used for around $1300-1400.

A closing observation: both the Vandy 2C series and the 3A series of speakers do not perform well at very high volumes. They tend to get congested and lose their dynamics when pushed to extreme SPL's (mostly due to the 1st-order crossover), so don't be concerned about needing a super-amp to drive them. Unless you will be using the 3A Sigs in a very large room, you will probably find that an amp with 200 wpc and large filter capacitance will perform satisfactorily.

I second the McCormack's. I used a pair in a vertical biamp with great success with these speakers. You have to go a ways to beat them for the money. Even the non-deluxe versions are good. You can upgrade through SMac later as mentioned above. The 3A Sigs operate below 4 ohms. The McCormack's double down into this load indicating more than adequate power supplies and current capabilities.

I've been using an Audio Research Classic 60 with great success. More than enough power, though I do have a small room and don't listen at high levels. I would also consider some of the Audio Research solid state amps, they're quite good for the money (used that is).

Any of the McCormack amps from DNA-1 up in power are excellent matches w/ Vand. 3 speakers, unless you do the bi-amping thing like Swampwalker wih a pair of .5s. I especially liked the DNA-2 with the 3A/3A Sig., and a DNA-2 can sometimes be found for around $1500.-- LOTS of power. Good Luck. Craig