linelevel pre that facilitates balanced bi-amping?

If you are going to take things that far, you really need to move into an active electronic crossover. As such, you would only need one set of balanced outs. I know that this may be more involved than what you had planned, but believe me, it would be well worth it. Sean
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Sean, thanks for your reply. I'm sure your advise has merit. I am trying to help out a friend and I'm sure that by-passing the passive cross-overs in his new speakers are not an option for him.

That's quite a list of "requirements"-- hard to meet them all. If your friend would accept a tubed pre-amp, the Sonic Frontiers Line series of pre-amps could meet all the requirements except, of course they're not solid state. And the stock tubes would have to be changed to get the "warmth" you want.

But the Line series has two pair(s) of XLR terminals out, and a beautiful FULL function remote. It can be warmed up wit NOS tubes, and is available in three models and price levels-- may only be available used in the near term? Good Luck. Craig