DAC chip families: ESS, AKM, Cirrus Logic, Burr-Brown
Most of the digital-to-analog converters in modern DACs and DAPs are made by one of four silicon vendors. Each has a characteristic architecture and a reputation for a tonal lean — though the implementation and analog output stage matter more than the chip itself.
ESS Sabre (ES9038, ES9039)
32-bit multi-channel hyperstream architecture with an extremely low theoretical noise floor (-140dB). Reputation for an analytical, treble-forward presentation when poorly implemented; well-designed ESS implementations deliver superb extension at both ends.
AKM Velvet Sound (AK4493, AK4499)
Multi-bit delta-sigma architecture with proprietary digital filters that emphasize a warmer, more analog-leaning midrange. The 2020 fire at the AKM Nobeoka fab caused a multi-year shortage; new designs increasingly substitute the AK4493SEQ or ESS equivalents.
Cirrus Logic (CS43198, CS43131)
Low-power 32-bit DAC popular in portable dongles. CS43131 integrates a headphone amp on-die. Tonally neutral, very efficient — the workhorse of USB-C audio dongles.
Burr-Brown (PCM1795, PCM5102A)
Texas Instruments' audio DACs. The 1700-series multi-bit architecture is prized for a rounded, musical sound. PCM5102A is the budget reference in DIY and entry-level desktop DAC designs.