Differences:
- Z8: ESS Sabre ES9038Pro DAC chipset (1x8 channel). Z6: Dual ES9068A (2x2 channel) DAC chipset.
- Z8: 10x OPA1612AZ6 operational amplifiers. Z6: 6x RT6863S operational amplifiers.
- Z8: Ultra-low noise power supply. Z6: Low noise power supply.
- Z8: 7 PCM and 4 DSD filters. Z6: 3 PCM filters.
Casing dimensions, LCD display, ports, VU meter are all the same.