David, Martin has owned many amps and equipment, and knows of what he speaks. Martin: I'm very glad to see that you can shed some light on this!...............I agree about the input and output impedance, and I believe that the Aleph series of power amplifiers have the lowest input impedance of any power amplifier that I've ever heard of (makes it a more difficult load for the preamp to drive it). (By contrast, the Model 88 power amp has a 100k ohm input impedance, the same as my Krell. This amount of input impedance is considered to be in the upper part of the "mid-range" of input impedances for amplifiers....20k ohms and below is considered low to very low....the little 2A3 tube amps I'm going to build have an input impedance of 200,000 ohms....I'll be racking my brain to figure out what cables work best with them, that's for sure. But they will be a tremendously easy load for the linestage/CD player to drive...Incidentally, my CD player has a specified output impedance of only 50 ohms for the RCA connection, so that's why I take offense when somebody says it can't drive a power amplifier directly!!! Not only does it, but it does so better than many linestages!) I'm sorry I didn't mention this might be a factor before, I should have been thinking about it. I guess I figured you had that part worked out already, since you had specifically wanted the Aleph 3 for quite a while. This will all work out, in any case...
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- 33 posts total
- 33 posts total