Audison bit DMI MOST Digital Interface — Connect OEM MOST Fiber-Optic Systems to Audison Processors
The Audison bit DMI is a digital interface for vehicles whose factory multimedia system uses MOST fiber-optic technology. It connects the car's original digital source to Audison bit processors, and to Audison amplifiers with a digital input, over an optical fiber. It converts the native MOST signal into a TOSLINK optical S/PDIF output, so the audio is passed on without analog conversion and without losing quality, and the factory controls stay in place.
Key Features
- MOST optical input (MOST IN/OUT connector) that plugs into the vehicle's fiber-optic multimedia system
- TOSLINK optical output: S/PDIF stereo PCM, 16-bit, 44.1/48 kHz (depending on the system)
- Keeps OEM head-unit volume, balance and tone controls, plus hands-free, navigation and parking-sensor alerts
- Turns on and off automatically with the car's MOST system and generates a remote-out signal
- Configured and updated over USB (mini-B 2.0) with the bit DMI software
- Works with Audison bit processors and amplifiers that have a digital input
Power and Technical Highlights
The bit DMI is a small interface, not an amplifier: it carries the digital signal only. Remote-in is automatic via MOST, and the optical output tops out at 48 kHz/16-bit stereo PCM. The software runs on Microsoft Windows (see Audison's site for the current supported versions).
Ideal For / System Fit
- Vehicles with a factory MOST fiber-optic multimedia system
- Installs that pair the car's digital source with an Audison bit processor or digital-input amplifier
- Owners who want to keep the factory head unit and its controls
Only for MOST-based vehicles: it will not work with other OEM digital systems, and compatibility depends on your car's system and configuration.
Installation Note
Installation means splicing the interface into the car's MOST fiber loop, then configuring it for the vehicle over USB. Confirm vehicle compatibility before ordering, and use a professional installer.
What's Included
1 x Audison bit DMI digital MOST interface (confirm the supplied cables and accessories with your supplier)
Precautions
- Confirm your vehicle's MOST system and software configuration before buying
- Handle optical fibers carefully; sharp bends or damage can break the signal
- Professional installation is strongly recommended
- The output is limited to 16-bit stereo PCM, up to 48 kHz
Audison bit DMI vs. Analog Signal Tap
| Feature |
Audison bit DMI |
Analog Signal Tap |
| Signal path |
Digital MOST in, digital optical out |
Analog speaker or line level |
| OEM controls |
Kept (volume, balance, tone) |
Often changed or lost |
| Hands-free and navigation |
Preserved |
Depends on the tap point |
| Turn-on |
Automatic via MOST |
Needs a remote lead |
| Best for |
MOST fiber-optic vehicles |
Systems without digital access |
Frequently Asked Questions
What is the Audison bit DMI used for?
It connects a car's original MOST digital audio to Audison processors and digital-input amplifiers.
What is MOST?
It is a fiber-optic multimedia bus used in the multimedia systems of many vehicles.
What output does it have?
A TOSLINK optical S/PDIF output carrying stereo PCM, 16-bit, 44.1/48 kHz.
Do I keep the factory controls?
Yes. Volume, balance and tone controls, hands-free, navigation and parking alerts remain unaltered.
How does it turn on?
Automatically with the MOST system, and it generates a remote-out signal.
How is it configured?
Over USB with the bit DMI software on a Windows PC.
Which Audison products does it work with?
Audison bit processors and amplifiers that have a digital input.
Will it work in my car?
Only if the car has a MOST fiber-optic multimedia system; check your vehicle's compatibility first.
Product Specifications
| Specification |
Detail |
| Product |
Audison bit DMI Digital MOST Interface |
| Input |
MOST optical IN/OUT socket |
| Output |
TOSLINK optical S/PDIF, stereo PCM, max 48 kHz/16-bit |
| Remote |
Automatic on/off via MOST, remote-out generated |
| Configuration |
USB mini-B 2.0 with bit DMI software |
| Compatibility |
Audison bit processors and digital-input amplifiers |
| Brand |
Audison |
Keep your factory system and go fully digital — order the Audison bit DMI today.