Which Pre-amps Will Allow Two Subs

For music the Linn Kairn will give you 3 set of stereo outputs for multi amps. For a home theater the Rotel RSP-1098 has dual sub outputs, keep in mind that they are feed the same signal (mono .1).

The Bryston BP25 has 2 sets of RCA stereo outputs and one set of XLR stereo outputs. This pre is robust enough to drive long interconnects; if your subs will be far from your pre, it should be on your list.

McIntosh preamps have 3 outputs as well.

First Sound Presence Deluxe Mk II has two sets of outputs as well...

The Pass Labs X0.2 have two pairs of variable XLR and two pairs of variable RCA. All usable at the same time with its single volume control or remote. The Pass X1 and X2.5 have one pair of each type that are variable.

I use my X0.2 with multiple amps and will use it with active crossovers eventually. Works simply and flawlessly.

It should be easy to use the RCA connectors for the Subs on any of the units. Remember that on preamps, the RCA outputs will have a lower output than the XLR, but almost all amplified subs have output controls on them to compensate for this little bit of difference.

Also if you ever run a Theater preamp through it, all three of these have a unity gain pass through for that purpose.

Hope that helps.

Best Regards,