Solid State Logic SSL 12 USB Audio Interface - Manual (Page 16)

1. Meters
The meters indicate the incoming signal level to the channel. If the meter turns red
then it demonstrates the the channel has clipped. Click on the meter to clear the clip
indication.
The +48V , LINE & HI-PASS functions can be controlled from either the hardware or
SSL 12 software mixer.
2. Headphone Sends