Ideal Pre Amp for Bryston 3B ST or 4B SST 2

I'm using a 3BST with an ARC SP16 in conjunction with a SCE Harmonic Recovery System device that helps with impedance matching between amp/preamp. These are driving Vandersteen 3A Sigs and I am enjoying the sound. When my finances are right I'd like to get an ARC power amp, maybe a 100.2,D300, D400mkII or 300.2. The ARC amps have a 150k input impedance which would mate perfectly with the SP16.
The SCE HRS is no longer made, but there have been discussions about it here and elsewhere. I'ts an option if impedance matching is an issue. Some may not like the idea of another box, more cables, etc in the chain. I have seen them come up here on A'Gon from time to time. If anyone out there has experience with this device, please chime in on your observations.

12-08-10: Bob_reynolds
Some manufacturers of both solid state and tube gear will ensure that the input impedance of their solid state amps is high enough to mate well with one of their tube preamps. Thus, sticking with the same manufacturer has it's advantages.

i can believe that...

12-08-10: Bob_reynolds
Of course, some solid state amps are designed with a high enough input impedance to mate well with any kind of preamp. You'll notice that Bryston amps have a usefully high impedance on their unbalanced inputs and a less useful impedance on their balanced inputs.

i did notice that input impedance for balanced inputs is lower than that for unbalanced inputs in bryston amplifiers. do you know why it is that the input impedance for the balanced inputs is lower than the input impedance for the unbalanced inputs?

I'm going along with Bob reynolds, You may not call it synergy, but when a designer designs both an amp and preamp, he matches them exactly as he see's they should be, no voltage or impedance mis matches, similar idea's and normally the same brand of gear does quite well together. I can't say if it is synergy or not, but it works. Of course that doesn't mean other things won't work together, i'm just putting in a reason why Bryston just might work well with another Bryston. I haven't listened to them, but I'm told Brystons latest generation pre's are quite good.
As far as another pre that won't cost a mortgage??? In july I picked up a New Coda, bought directly from Coda, they discounted it nicely and it is a very nice piece of equipment, worth looking into. Good Listening, Tim