This board handles the audio signal and is fully DC coupled in/out and, since it's functions are self contained, can be positioned optimally close to signal I/O . There are:

• 5 INPUTS
• REC. can also be used as a direct in (ie single source). More about this later.
• DIRECT OUT which has an output impedance of 25Kohms
• JFET OUT which uses the optional JFET (LSK389-A) devices as shown installed and has an output impedance of 50 ohms

To use as a volume control in your amp or preamp just route all signal to the audio board and use the direct out connector block. EZ drop in to replace your existing attenuator.

But there is also a possibility to build a simple standalone linestage by using the JFET outs.
For example:

• Projekt chassis 240mm is perfect (we will be offering a premounted faceplate for the Ultimate VC)
• handful of RCA jacks
• Ultimate VC System with JFET option

Now you have a fully DC coupled, 50 ohm output impedance, unity gain linestage which has NONE of the problems of passive linestages. To paraphrase one of the masters: Sort of a like a 21st century Aunt Corey's Passive Preamplifier
We are doing a buildup of this now and will blog it shortly

Next: The Control Matrix