"Context" in this context is placebo. If one headphone amp genuinely sounds better than another, then it should reliably win in blind tests. If you need to see

"Context" in this context is placebo. If one headphone amp genuinely sounds better than another, then it should reliably win in blind tests. If you need to see the nameplate on the amp to know that it sounds better, then it doesn't actually sound better in any meaningful way. If you can't tell your guitars apart blindfolded, that's nature's way of telling you that you own too many guitars.