Need recommendations to replace ARC VT100 MkII

Zd542; the VT100 accepts both single ended and balanced signals. The internal circuitry is different than the REF150 amp the other post was referring to. This amp works well with both single ended and balanced. The OP doesn't have to be concerned with only balanced pre-amp in this case. Quite honestly, I would keep the VT 100 if it sounds wonderful in your system. Checking bias may be a pain for this amp. Although I don't see it as that much of a problem for someone that is qualified to do so. But, if the resistors or bias check points are difficult to get to, either 1) let someone else check and adjust it, or 2) turn the unit off, let the caps drain, open it, attach the meter leads to the proper point, have long non conductive pot adjustment screw drivers handy (so it can't short against anything) and go for it yourself. this adjustment only is needed when you change tubes, or if the bias drifted (which should be rare). So, I would keep this excellent amp.

Enjoy

"10-08-14: Ctsooner
Rogue can be a great choice for tubes as can the Quicksilver gear."

If you want to stay with tubes, I don't think Rogue is as good as you VT-100. Quicksilver would be a great choice. I put my VT-100 next to a pair of V4 mono amps. I thought the Quicksilver was better.

Z, I was throwing out Rogue as some like their name/look. For the price they are nice. I agree that they aren't as neutral as the VT100's. Heck, I went with Quick gear (the Silver Mono's that I"m selling off now) over AR years ago. I was more musical than the amp that was closest to them in cost. I got accommodation price back then too so the cost differential wasn't huge. The dealer thought I was nuts until he came to my house and brought the AR amps and we A/B'd them both. Quick just sounded best with Proac Supertowers (selling these as I have new Vandy Treos). Most speakers have tipped up high ends in these price ranges and the Quicks are just musical and right. The AR gear can often be very very neutral and that's why folks love it, but they don't sound 'tube like' at all and most folks need that and don't realize it. Those V4's took things to a different level for Mike Saunders.

"Personally, I felt the AX7e sounded better than most of the used Ayre stuff, plus it's smaller and needs one less cable."

That's probably due to the fact that the AX-7 doesn't have a preamp. Back in my first post, I mentioned that the OP would probably be better off with a new preamp. That's why. The VT-100 is a good all around amp. So, in the OP's case, I still think a new preamp would be a much better move.

I am on the road so I haven't checked in for a couple of days. Thanks for all your replies. Zd, what would you consider a good step up from the sp3c in the ARC line?