I'm streaming two channel music to my SB Touch in my HT. I have 3x5K2s set to large, 2x5Ks also large and a pair of subs set to LFE only. With 2 channel I usually listen to Trifield but when toggling back and forth between Trifield and Stereo I notice more bass in stereo. What's happening here?

Ken

Main: G68J, 5K2s, 5Ks, HSU subs, Pio 151FD, Dish VP722, Roku, Wadia I70, Anti Mode Dual Core, Oppo 103D Vanity Lite
Office: SBT, Berkeley Alpha DAC 2/MQA, Magico S3 Mk II, Boulder 2060, Lumin U1 Mini streamer, Roon.