Bob,
The Tempest has indeed both, MC and MM stages, selectable and switcheable. The MC stage has a standard 47 K, and I have used it with the 0.2 mV Symphonic Line RG 8 Gold with great success. Don't think that I'd go any lower than that, though. However, again, keep in mind that the Tempest is the $ 3,300 SL RG 2, which SL has been tweaked and improved for nearly 2 decades. Also keep inmind that Rolf is a die-hard analog lover (with one of the largest Opera - and classical voice collection I've ever seen, & old Jazz greats), and you'll have an idea that the phono section is actually one of the priorities of the preamp.
As for 2nd outs, we don't take an input away, we just add a couple of our connectors and jump them to the main outputs. We do, however, take an input away if we'll modify a Tempest for an AV bypass.
Hope this helps,
Klaus