Sound is fine and yes it is coming out!
Yes, it is on the right side of the panel.. I can see and A and B next to it...(not illuminated,). You can see this on page 10 of the manual. It doesn't explain what the icon is, yet shows the "A" illuminated.
Have you tried calling or emailing Outlaw?
Epson 3500 3D projector
115" Carl's Place Flexiwhite DIY screen
Outlaw 976 Pre/Pro
Outlaw 7500 for center & surround duty
2- Emotiva XPA-1Ls for L/R
1- Emotiva Mini X-A100 for deck
2- Outlaw LFM-1 EX subs
Oppo BDP-105 Blu-ray/DVD/SACD player
Outlaw LCR (Snell Labs) for center channel duty
Tekton Enzo XL L/R
4- Emotiva ERD-1s surround speakers
Emotiva UOM-6.2 for the deck
Technics SL-1100AC w/ Ortofon 2M Blue cart
Monster HTS3600MKII power center