We commonly do not comment on other manufacturers' products. However we might comment on the capabilities of chipsets used.
M0 uses ESS ES9218P
http://www.esstech.com/index.php?cID=422
ESS is basically a digital vol. control based smartphone SoC which combines a DAC and a headphone amplifier.
G1 uses TPA6133 headphone amp & PCM5102 DAC
http://www.ti.com/lit/ds/symlink/tpa6133a2.pdf
http://www.ti.com/lit/ds/symlink/pcm5102a.pdf
Discrete DAC and headphone amplifier, as neither the headphone amplifier nor the DAC contain a volume control, this is handled upstream from both, likely in the ComTrue CT5301 ASRC.
http://www.comtrue-inc.com/index.php/downloads2/send/6-ct7301-ct5301/1-data-sheet
xDSD uses whatever we use (it's used non-standard anyway so looking at the datasheet tells less than half the story, so we take the results from our AP2).
We will look at maximum output voltage (600 ohm), SNR at 1V out and then rank the achievable loudness in dB with the loudest the "0dB" slot:
- xDSD 3.8V & 109dB (~3.2uV output noise)
- ES9218P 2.0V & 110dB (~3uV output noise)
- TPA6133 1.6V & 98dB (~ 12uV output noise)
- xDSD 0dB
- ES9218P -5.5dB
- TPA6133 -7.5dB
The xCAN in balanced mode would show in the list above as +6dB from xDSD.
In term of usable SNR with most headphones xDSD and ESS Sabre are comparable, maximum output is lower.
The TPA6133 has a poor SNR compared to the other two and combined with the lower output it offers 19dB (almost 10 times) less available dynamic range for amplification than what we use in the xDSD and around 25dB (almost 20 times) less than the xCAN.
ESS Technology :: es9218p
http://www.esstech.com