Walrus Audio Fundamental Ambient – compact ambient reverb with three modes: Deep (dark, adds low octave), Lush (ultra-long sustain), Haze (lo-fi with distortion & sample-rate reduction). Sliders: Decay, Tone (LPF on Deep/Lush; resonant band-pass on Haze), Mix. Trails on/off, buffered bypass, 9V DC / 100 mA, mono in/out.