The V276 revision A3 is propably the best you can get. The V276a is the non discrete output stage version of the V276. It’s still good, but not the holy grail level. Within the V276 range, the revisions A1 to A3 sound virtually the same. But with A3 they changed the gain switch to a better version that will save you from some headache. Seems to be built to last forever. That’s the thing.