I am selling a new, never used Nav TV ZEN 25 BMW MOST audio converter. I was planning to install this with a Match Up10 in my HK equipped car but have decided to go with a Mobridge all-in-one unit instead.
This allows you to delete the MOST Logic 7/hk/EPS amplifier in a 2006-2019 BMW (for application info, see below). It gives you RCA analog out or Toslink SPDIF digital out, with handsfree and chimes added in, and with volume control applied. This lists at $900, is comparable to units from Audison, Mobridge, and Helix for nearly the same price (the Audison and Helix are Toslink only, no analog RCA out).
https://navtv.com/products/NTV-KIT96...5rndVZzMyYSDwg
Selling for $300 plus shipping.