The AMP-23R's newly developed Essence Circuit was born from years of expertise acquired from previous-generation technologies. Now with a completely new and advanced PCB artwork, the circuit employs all discrete transistors with zero negative feedback and features an ultra-fast and ultra-wide frequency response. All these advanced technologies are concentrated into a compact module, called “Essence” which takes its important role at the input of the amplifier. The Essence module then delivers its incoming music signals to output circuits through a precise attenuator that sets the lossless amplification factor, or gain.