G'day,

I mis-typed a value applying corrective EQ to my monitors and found a bug in Totalmix's output EQ, causing a DC offset from the AN1/AN2 XLR outputs of a Babyface Pro FS.

I can consistently replicate the behavior doing the following:
1. Set main output as AN1/AN2
2. Enable EQ
3. Drag HF shelf to +6dB with the cursor
4. If I enter an exceedingly high value of ‘50000’, the pot sticks to it’s upper-threshold of 20k.
5. Use the mouse to click and drag the value back to 19.9k.
6. Then enter ‘000’.

Band 3 frequency will now show as '0'. Clip lights will illuminate in Totalmix.

During some tests, I've had loud, repeated popping noises through my monitors - about twice a second.
In other instances, there's only been a single pop.

A multimeter tied between pin 1 and pin 2 of the output shows a DC offset of ~860mV.

Particulars as follows:

TotalMix FX Version 1.83 macOS (1)
Firmware: v203 (also confirmed in v205)
Driver: 4.08
macOS Monterey v12.6.5 (also confirmed in Monterey v12.6.6)

I've uploaded a video demonstrating the problem here:
https://www.dropbox.com/s/98cfkfpwp2fmk … g.MOV?dl=0

Additionally, as a secondary issue - since moving to the DriverKit driver, I'm getting ‘Fireface USB Settings quit unexpectedly’ if I unplug USB from the Babyface Pro FS while the system is running.

I've also raised this via the support line of the local distributor.

Cheers,

Andrew