The Good The Alpine TUA-T550HD offers great-sounding reception of HD Radio channels and subchannels, with seamless transitioning between digital and analog signals. iTunes tagging of HD Radio songs makes it easy to purchase music that you like.
The Bad When displaying HD Radio multicast substations, the TUA-T550HD only displays text information for the current channel.
The Bottom Line For users who spend much time listening to broadcast stations that offer HD Radio, the Alpine TUA-T550HD's increased sound quality and functionality make it a worthwhile addition to an Ai-Net compatible Alpine receiver.
Alpine TUA T550HD HD Radio tuner
The Alpine TUA-T550HD is an HD Radio tuner module, which, when connected to an Ai-Net compatible Alpine car audio receiver (nearly all of them are), allows the reception of digital radio broadcasts. The device is fairly straightforward: you connect it between your car's antenna and the receiver and the broadcasts come in.
However, when the TUA-T550HD is connected to one of three very specific Alpine receivers (iDA-X100, iVA-W550 or iDA-X100M) and a compatible Apple iPod, an additional function is activated: iTunes tagging.