Yes, you have it right entirely.
While no potentiometer will increase sound quality, bad pots will bottleneck it. You can keep moving up to really fancy ones like Goldpoint, but laws of diminishing returns show you're barely gonna hear any difference over a ~$5 part.
There are a couple that are compatible size wise, but i haven't tried them myself yet, and prefer to personally try things before recommending them. I can pm to you if you are curious what the part # is anyway. But i will say it publicly once i install one and confirm it works.
On both mine, off is pointing straight up, so it's like 12 o clock to me. I don't think it's the same for everyone so i just used relative terms (3/4 of the way)
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I know
double amping is a heresy on this site but I can hardly enjoy my bMac - or any non-Walnut DAP or most portable headamps for that matter - without using the Walnut at the end of the chain. The amount of pure energy it pushes to your headphones is truly remarkable. And it does not have much of any preamp stage at all, so treat it like you'd treat a power amp. a low output headphone amp becomes a portable preamp, and suddenly you're pushing anything you want into 4W RMS at 16 volts. pretty incredible if you ask me. And the sound backs it up, I can't wait for another local head-fi meetup so I can bring the walnuts and blow some minds. Buying another zone desktop amp to use for the same purpose is not seeming very appealing currently.
I just have one of my Walnuts on amp duty while the other is on DAP duty, and i switch them up so i can get to know the different opamp sounds better. But I am fully addicted to the crazy power this player pushes in amp mode, and it's my personal opinion that double amping is better on the Walnut than it is with any other amp on the market. There's no point in double amping when you're not getting bigger sound to make up for it.
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