Sonywalkmanuser
Headphoneus Supremus
Guess there’s not going to be apples to apples comparison.Ibasso doesn’t do any DSP like Sony, beside the PEQ. But once using Neutron player, you can enjoy all Neutron DSP. This is available on all AndroidOS. When doing the most extensively task with Neutron, upscaling to 368Khz and all to DSD , the player last about 8 hours
The new Walkman is also capable of using Neutron to do upsampling as well.
But If you switch off all DSP on the Walkman, it’s going to be 37 to 38hours of playback time for a typical offline playback user but that’s with the low power output for the Walkman.