bluestorm1992
Headphoneus Supremus
Welcome to the club!I'm no shoe expert but IC chips usually degrade with use. Before a chip is made it needs to pass certain temperature/rigidity/electrical tests before it's fit for production. You might consider that as a factory "burn-in". The only other "burn-in" is working at room temp levels.
Tubes, some capacitor types, leds and other "analogue" components on the other hand reach what is called a "working regime" after a certain period of stress which they "keep" until their EOL. If the W2 uses any of such components in its PCB then yes, a small difference can be heard past X hours (usually). Whatever the case, your brain is also playing a role in the sound perceived.
Back on topic. I'll get my W2 by end of month. I'm curious how it will pair with the LZ A7. We could ask L&P at what volume level and gain the W2 outputs a 2v (or close to) signal to be considered as "LO"
As for “LO”, I am just setting it at volume 100 ATM. Works pretty well as a source device to Cayin C9.