"...unless your pre amplifier’s input sensitivity is low enough to handle 2V without clipping."
Thanks for the link. How do you compare streaming music using iPhone analog output -> to preamp vs. Streaming via Chromcast -> preamp?
I’m however not sure if I follow the statement I pasted above. If I’m not mistaken, the 2V is the industry (I think THX) standard for unbalanced analog output for most if not all digital source equipment and the downstream components, preamplifiers in particular, should all be able to handle this level without clipping. Actually, I don’t even recall seeing input sensitivity specs - assuming you meant input voltage sensitivity, not input impedance, even mentioned in preamplifier data sheets. However, the concern around input voltage sensitivity can come into play for power amplifiers, and is usually published, since a very low input voltage sensitivity, as defined by the voltage to deliver maximum output, could cause overload when presented with the nominal 2V input, e.g., an amplifier with a 0.5V sensitivity, etc. Makes sense?