I'd consider the X series Pass over the Aleph for any Apogee product. The Alephs will drive but aren't crazy about low efficiency drivers of low impedence. YMMV
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The older Aleph series with 3 gain stages will drive the Apogees. I used an Aleph 0s with Apogee Duettas for several years. ( I know this shouldn't work, but it did.)
For the Calipers I think the Aleph 0 monoblocks would be excellent but the Aleph 3 & 5 don't do well into low impedance loads. Also be careful about using a tube preamp into the Alephs as they have a rather low input impedance of I think 14 kohms. I am now using a BAT VK30 into the Aleph 0s, but the ARC SP9 may be marginal.
I use Alpeph 1.2's with Duetta Signatures, and it's a match made in heaven. The Calipers are a bit tougher load than the Duettas. The Calipers are nominal 3 ohms vs the Duetta nominal 4 ohm. The 1.2's are still good for about 250 watts at this impedance, so they should work fine.
They are pretty heavy and run hot, though (think space heater).