Yes I did the install at the amp and this Acura uses the MOST audio input system (as shown in the OEM wiring diagram) like the Euro cars have been for years, so we cant use the digital input. I finished all the wiring and amps late last night and today I'll be adjusting it all, but I can already say the output using the OEM speakers with the new amps is impressive!! After 30min my ears were ringing a little (and how it should've been built in the 1st place IMO) Using Audiocontrol amps, I can see both the OEM input frequency + levels on the PC and then Adjust the outputs as "I" like to hear them.
I too owned a 16 accord and doing hundreds of Honda audio installs in my company...the ANC is hardly noticeable when unplugged and does NOT affect the volume control w/ speed, in fact ANC shuts off when a door or window is open. People think it quiets the cabin drastically but it doesnt and servicing all manufacturers w/ audio installs over 20yrs., we have tested it in many models with the same outcome. We used to have a test of someone unplugging it randomly while driving to see if the other person could tell the difference and it was extremely hard to tell and the 5%ish change was not a factor at all. Also, if you are doing an audio upgrade (like a subwoofer) it practically defeats the entire ANC feature anyway if the mic. can pick up the sound...so unplugging it is the better option. For a couple bucks you could do a simple toggle switch and test it yourself.
I know the 2020 model had the ANC module plug under the glovebox but i havent looked for it in this car and feel the 2021 17speaker amp redesign may have it built inside the amp.(?)
