I have these two, but I don't have 'golden' ears so I can only tell you my subjective opinion.Just for my curiosity, is this zx507 will playing well with airpods max?
For the bluetooth, I think the sound from zx507 is the same to the sound from an Apple device. The best bluetooth codec APM would support is always AAC (currently, I believe), so all machines to APM are just AAC bluetooth transmitters technically.
For using the lightning to 3.5mm audio cable, the sound quality would be better no matter which device you use to connect to (my own feeling). However, under the song with same sample rates and bitrates, I am unable to distinguish the difference between connecting to zx507 and to my MacBook Pro. I went to Sony Store this Jan, connected APM to DMP-Z1, and also got a similar sound quality (at least to me, no obvious difference). In my opinion, there are only two advantages in using zx507 with APM: 1, enjoying the sound effect such as DSEE HX/Ultimate. 2, listening to the songs with sample rates higher than 48 khz, which is because Apple devices do not support the songs with higher resolution and need an external digital-to-analog converter based on Apple's official statement.
Btw, I guess the reason why the sound might be better by using the cable is:
'The Lightning to 3.5 mm audio cable was designed to allow AirPods Max to connect to analog sources for listening to movies and music. AirPods Max can be connected to devices playing Lossless and Hi-Res Lossless recordings with exceptional audio quality. However, given the analog-to-digital conversion in the cable, the playback will not be completely lossless.'
----quoted from https://support.apple.com/en-us/HT212183?cid=mc-ols-applemusic-article_ht212183-macos_ui-02172021
So in my understanding, the sound quality is better than bluetooth connection but not that good compared to other normal cable connection.
Anyway, APM is a very good headphone giving you great sound even when it is under bluetooth connection, though I am still expecting a stronger bluetooth codec created by Apple and a NORMAL cable designed specifically for APM lol.
Last edited: