It wasn’t with the Vérité Closed, nor the HEDDphone, and it was the V281 not the V280, but I found the Phonior X to be more engaging, dynamic and resolving than the Violectric amplifier.
Which is why I bought a Phonitor X (still the best solid-state headphone amplifier I’ve heard) and not a V281 (or anything else) at the time.
Spend some time here, and you’ll qualify for the Community Preview Program, and there’s a Phonitor XE in the program you could have on loan to audition properly (for a couple of weeks) in your own system.