I cannot WAIT to hear what you think about this. I'll definitely pull the trigger.
The Plug & Play pakke til Hyundai Ioniq 5 Hyundai Ioniq 5 2021-> med Bose lydpakke Varenr:BRSDSPIONIQ5
is a nice upgrade for the limited trim OEM speakers.
I was surprised a day or two after delivery how the limited trim BOSE system actually felt somewhat "acceptable" to me. However, The OEM speakers sounded a lot better with the expert IONIQ 5 specific tuned MUSWAY amplifier. Interestingly, the intent for this product is to upgrade the sound system without replacing the front door woofer or tweeter. The value is not only in the plug and play cable, but in the custom I5 OEM speaker tuning for the I5 cabin. The I5 limited trim speakers might be slightly upgraded in '23, at least as evidenced by the Crutchfield Metra connector that others have reported worked well, no longer fits the '23 woofer connector (the keying is different).
Having read so many horror reports, I also had ordered replacement Hertz component speakers. Having installed them now, I reset the MUSWAY tuning to factory, and have been starting to tune a new. The Hertz tweeters are superior, for sure I can hear detail not heard on the OEM system, even with the MUSWAY DSP amplifier upgrade. However, the stock limited trim speakers, especially with the MUSWAY custom tuned system for I5 IMHO, are not that bad to my ears. Had I not already bought the Hertz speakers, I might have stopped with the MUSWAY plug and play upgrade. I have no final feeling yet for the Hertz speakers, although a definite upgrade, I am not entirely trilled by them either. It might just be that I don't have the MUSWAY tuned right for them yet.
I installed on a cold day in the driveway, so the MUSWAY plug and play cables were a bit stiff. It was somewhat difficult to blindly find and unlatch the two BOSE connectors, then to plug the connectors in from the new cable. Note, there are connector latches, do not just pull without first releasing the connector latches. Eventually, I pulled the felt flooring up higher and spent more time with a flashlight to try to orient my hands. You really can't see much when your hand is in there, so it is all by feel. Also, use some care removing that first smaller door trim piece. A relatively thick trim tool is probably better, and be careful not to bend in the long direction, working more to open each snap, before pulling up. For the first time in a many years, I got a bit of a crack in the trim piece when pulling up against one of the last fasteners. It's barely visible, but still hurts. Also, the velcro supplied on the bottom of the MUSWAY amplifier enclosure does not seem to grab the OEM carpet under the rear seat. My 5 came with those rear seat back carpet covers, ironically, the velcro does grip those. Anyway, for now the amplifier seems to be staying put under the seat, another project for another day to figure out how to secure it better.