Passive & Tubed pre-amps to power amp at same time?

Ghosthouse, if you happen to have a multimeter it would be interesting to know the values of the two resistors that are presumably used in the Harrison Labs attenuator. The values aren't particularly critical, but knowing them may provide added confidence in their suitability for the application.

You would take two resistance measurements, one between the input center pin and the output center pin, and one between the output center pin and its ground sleeve.

I've measured those values in the Rothwell 10 db attenuator as 22K and 10K respectively, which seem like reasonable numbers for most (but not all) applications. Especially, as in your case, when used between a solid state signal source (presumably having low output impedance) and the input of a tube-based component (presumably having high input impedance).

Also, thanks very much for the nice words. Best regards,
-- Al

PlanB: place the passive between the CDP and the preamp input.
Adjust to suit, but keep your cables short as passives have been shown to be quite sensitive to cables!

Al - Have multimeter. Will measure.

Atmasphere - Good one. That would allow me to do what Zd suggested 6 posts above yours. He was thinking my CDP had a volume control (at least, that's how I read it). Re passives' sensitivity to ICs, I assume this would be to ICs on the output side of the pre-amp?

Everyone - thanks. Lots of stuff to try.

More so on the output side than the input, but they are sensitive to the input side as well. As a general rule of thumb keep the cables short!

"Atmasphere - Good one. That would allow me to do what Zd suggested 6 posts above yours. He was thinking my CDP had a volume control (at least, that's how I read it). Re passives' sensitivity to ICs, I assume this would be to ICs on the output side of the pre-amp?"

Sorry. I wasn't mistaken, just confused. I was commenting on a few different threads about digital sources with volume controls. The brands were Esoteric and Wadia. And since they both use Teac transports, I somehow allowed my fingers to get the best of me.

The IC's and the passive would be on the input side of the preamp, not the output. Depending on how much room you have on your shelf, you may be able to get away 1 pair of IC's and 1 pair of jumpers. You'll only need to set the volume on the passive once. After that, you'll just use the one on your preamp. Just put the passive behind the CD player close enough to use jumpers. Also, if you don't have really deep shelves that extend too far behind the components, you can probably get away with a 1/2 meter IC. That will keep the lengths down to a minimum, as well as cost.