It's understandable that some manufacturers chose a $10 amplifier chip when building a base model budget vehicle.
It's disappointing to find that used in a $30k vehicle, and even more inappropriate to find that same low-cost amplifier chip used in a premium sound upgrade that the customer paid extra money for.
In addition to the hissing sound problem with the MK2 ICCs, there is also the 'screen going black' problem, and the lack of support for the navigation software update.
To improve the hissing problem, it would have been interesting to hook up an all-in-one premium signal processor with amplifiers such as this one:
https://www.alpine.com.au/shop/proce...r/pdp-e800dsp/
Cheers,