|AKM's AK4399 is a high-performance, 32-bit stereo DAC that achieves 123 dB dynamic range for stereo, and 126dB for mono outputs. It is the newest member of the Audio4pro™ family, and is the highest performing device in the 32-bit DAC series. An innovative design technique utilizing a symmetrical layout for the left and right channels prevents signal quality deterioration, and a 32-bit digital operation block provides full 32-bit processing. Two digital filters are integrated into the AK4399: a sharp roll-off filter for high fidelity audio and a short delay filter that has no impulse noise pre-ring for live performance applications. In addition, 32-bit digital audio data can be input directly to the delta-sigma modulator without passing into the integrated digital filters, allowing for use of an external digital filter.