Blue ambient mode (drunk ewok) with a bit of diffusion runs into the yellow ambient mode (long delay) with a healthy dose of modulation and some low-end roll off courtesy of the tone knob. Use the expression pedal to roll the feedback on the long ambient to maximum. As you do, the blue ambient will increase with diffusion. Put your guitar down, grab a beer and listen as you’re shimmering, woozy guitar riff slowly transforms into a far away orchestra, on a slowly disintegrating cassette tape.