Marantz PM-KI PEARL LITE - Knob Feel Review Here we are, now this is special. The Marantz PM-KI Pearl Lite is a lovely piece of engineering. All metal knobs (including the Bass, Treble & Midrange adjustment knobs). While the volume knob is smooth and sumptuous, the input selector is the star of the show here! The clunk it provides on each notch of rotation is like you’ve found the love of your life. It just feels right. It feels like home. Well done Marantz.