headphone question

I don't think so.

I do think having one though, likely may improve on the sound you will get... as with about everthing else, dedicated upscale items should increase performance.

The impedance of the phones you want to get will give a clue there. Higher imp's phones might need one. A quick message off to the company will definitely tell you... or to one of their dealers.

I recommend you give the 'phones a try using the Mac's built-in headphone amp. If the sound doesn't suit you, then go buy a nice amp...

-RW-

Even quality companies will put inferior opamps for the headphone output. You can find many quality headphone amps for a few hundred dollars. Schiit is a good place to start. 

Maybe you can try the naenka tws earbuds. It uses Qualcomm 3040 chip and Bluetooth 5.0 technology. It can be used for 7 hours on a single charge and the total battery life of the charging compartment exceeds 28 hours. It can meet the music needs of travel and business trips.