Transporter vs Airdac or mdac

I've had a transporter since they first came out.
Currently using with an Apple TV 2nd gen with optical out, mainly streaming Spotify via AirPlay.
Rest of system is vintage Naim, with separate pre and power amps, and epos speakers. Plus a Linn Sondek LP12.
My question is, since the DAC in the Transporter is a few generations old, would I notice an improvement if I switched to an Arcam AirDAC or an Audiolab mdac?
Thanks for your advice,
Mike