I have relatively inefficient speakers (Magnepan 3.7R's) and amps with somewhat low input sensitivity (2.8 V to give 28 dB gain) and yet the volume setting on the CSL is about 9 to 11 o'clock, which gives peak db levels at my listening position of ~ 87 to 90 dB. The current CSL offers 14 dB gain, and the settings from 10 to 2 are 0.5 db increments. Above and below 10 to 2 the graduations are more course.
All of that tells me that with high efficiency speakers, high input sensitivity amps, high output sources, or recordings done at high levels, one could wish for more volume steps.
I was concerned about this issue and discussed it with Israel prior to making the final decision to purchase.
It's just one more box to check on the system matching homework.
And yes, I agree, this is one outstanding preamp. Almost got 24 hours on it now.