I installed a Match up 8DSP in my 2023 330i with HiFi and after tweaking it is a huge improvement in the sound quality, clarity and bass response. Installation was pretty simple, with removal of only the rear deck plastic, left side trunk liner and weather stripping.
I followed this video for instructions on how to install:
https://www.youtube.com/watch?app=desktop&v=f-n7e1mL6ds
I was unable to mount the Match up amp in the factory location as we need to save the RAM amp, so i placed the amp to the left of the rear storage pocket. I used the included brackets and drilled 2 small holes in the sheet metal to install the amp.
You will attach the included adapter cable to the factory Ram and to the vehicle then all of the adapters plug into the amp. Dont forget to run a usb cable out, i bought a 15 foot cable on amazon for $5
https://www.amazon.com/dp/B002KL8N6A...t_details&th=1
I purchased the amp on ebay from Allwoodsaudio - excellent service btw - answered all of my questions timely. The amp included the Required harness for my BMW as well as an amp install kit. Note - the kit includes a 40w fuse, you will need to get a 50w ATC fuse for the amp. Shipping took about 10 days from UK to US.
Run a 12v cable with 50amp fuse to the positive battery terminal and ground where the battery is grounded on the chassis.
i downloaded the DSP software directly from Audiotech Fischer:
https://www.audiotec-fischer.de/en/t...ool/downloads/
I also downloaded the DSP file specifically for my BMW 330i:
https://www.audiotec-fischer.de/en/m...ase/soundIndex
Once downloaded i muted all outputs to determine which output corresponds with which speaker:
Input A - FL
Input B- FR
Input C - RL
Input D -RR
Input E - Center
Input F - not used
Input G -L sub
Input F - R Sub
I then went to the output setting and set the high pass only for each speaker to 150HZ w/ 12 db per octave slope for the front stage and rear speakers, if there was a low pass set i bypassed it. I set the subs at low pass 150hz w/ 24 db per octave slope. I also increased the output level on each sub by .5 db.
Next I went to the time tab and measured the distance from each speaker to my head and recorded the stats. I adjusted the right and left to get the sound just to the right of the driver (i do not like hearing sound coming from the left tweeter).
I have not heard the HK system so I have no comparison, but with this upgrade it is 100% improvement over the HIFI. The factory HIFI sounded flat and unemotional to me with little bass response, i felt like it was missing an entire section of response. Now it is crisp and clear, highs are much more pronounced with vocals i can hear. Where before, i would hit 5/8 volume and the highs were strained now there is headroom. It is clear all the way up to 3/4 (haven't tried beyond). Bass response is punchy and it attempts to output lower lows - can hear every bass note on Jeezy Put on, where before it gave out at the first drop. You still will need to add a sub to get the impact but at least there is some resemblance of a sub vs what used to be a woofer at best and more midbass than anything.
Overall if you dont want to spend the 3K to get the HK (gotta have premium package in US to get it) then this is a worthwhile upgrade. It's a 5 out of 10 for install difficulty and is a huge improvement.
I could not attach my sound file, if anyone know how to upload it let me know pls.