But this amp too has much engineering/labor involved. You assume it is a simple design because the end result is 'just' a headphone amp. This amp is like the Bugatti of the headphone amp world.
Similar deal. Except drive manufacturer = pot luck.
$89 + free shipping.
Drive comes with a rubber shell thing, that you take off if using drive internally/in a case. You use the shell as a case, I guess. I've not encountered one before.