First listen to the C*100s with the PLC*1 mkII.
(after several first hours, with the C100 gain switch set to the recommended 32dB for the passive PLC )
First of all, where is it ?
By that I mean... the small space this pair occupies is (happily) compact, and considered "tiny" to my past linear A/B amps and pre combo.
The other reason I can't find it.........is, it's dead quiet, even with the PLC volume up more than I'll ever realistically listen (over 3 o'clock.)
Putting my ear up to my speaker.... nothing. This was through my streaming Samsung Note 8 on "pause" via the headphone output.
This was true as well, with just an unused/open PLC input set to listen.
The other source is my very large Eurorack synthesizer with non-shielded analog and digital modules (my other hobby). I noticed no crosstalk or bleed into the other PLC channels, even when cranking the synth's connected output.
Granted, there is some hiss when monitoring my modular synth, prob because my 1980's Kawai mixer (SE), or the synth modules themselves can produce accumulated hiss. The PLC seems to be reproducing what's fed into it. So, no surprise there.....the hiss was there before the CIAudio units...... and ONLY when that channel was active (selected)
Perhaps my impression seems meaningless, because I haven't fed it with hi-rez signals.
BUT..... what I've been sending it, is audio that I am familiar with, which is the best initial test anyway.
Associated equipment not already mentioned.....
Dynaudio Special 40 speakers (6 ohm, 86dB (2.83v/1m).
Canare RCA interconnects, under 6 ft. (nothing special, but well shielded).
6 foot pair of 14 gauge low-budget OFC flat speaker cable, soldered banana plugs.
All mentioned gear is connected to one 120v wall circuit.
Have not connected it to my PC soundcard yet...(my PC is sick, another story completely).