Aleph-3 Questions

I just looked at Rogue's website, and couldn't find specs. What does the owner's manual say the impedance at the main outputs is for the 99? I still say that if it's like over 1000 ohms, then it is having a tough time driving the Aleph.

A tube preamp with the aleph 3? Isn't the point of having an aleph 3 because it get's the tonality right in the first place? Wouldn't the tubes gloss over and color the sound just a bit? I would think you would need something very nuetral (and faster) to let the sound shine through. I'm sure it's a very nice preamp but maybe not with the aleph. Maybe like krell.

rogue audio doesn't put the output impedence spec in their 99 preamp manual. at least it wasn't in the manual that came w/*my* 99... which is why i tried crossing the 99's outputs w/differing resistors. as i previously said, a 2.2k-ohm resistor audibly reduced the volume of my rig, when the rogue was hooked up to my 25k-ohm impedence crossover. *no* drop in volume w/the 2.2k-ohm resistor crossing the cary preamp's outputs, which is rated at 800 ohms output impedence. this is why i believe that the rogue 99's output impedence is at least 2k-ohms. i've asked pass labs for input on a 2k-2.4k-ohm preamp driving their aleph-3, & haven't gotten a definitive answer; i'll post it when i receive it.

Kacz: my sentiments exactly! The synergy that exists between an Aleph P and Nelson's amps is wonderful. Tonality, resolution, transparency, silence, and extraordinary depth. (Christ, I sound like a bloody ad...time to get some sleep!)

nelson pass sez that the aleph-3's input impedence is 23k-ohms, not 10k-ohms. he sez it's their balanced amps that have 10k-ohms impedence. so, using a preamp w/2k-2.4k-ohms seems it's right on the edge of what may or may not work. (mr pass *did* say he thought a preamp w/2k-2.4k-ohms output impedence would not be a problem w/the aleph-3). my rogue 99 didn't synergize in my system, w/its 25k-ohm input impedence, your results may vary. regards, doug