I’ve never had a DAC/AMP before because as far as I know, I’m completely fine without them, I’m curious and would want to start somewhere cheap so I know whether to add them to my set and if the benefits are good enough to warrant an upgrade.
edit: if a decent sub $50 exists, I might go for that first
Shanling UP4 honestly. I think bluetooth dac/amps are a gamechanger in not having your phone tethered to a cable.