@brbrock - No, I have not received the Mystique Z DAC yet, but I am not surprised by the AI verbiage you mentioned. I looked up Google’s AI, which indicated:
"The Texas Instruments (originally Burr-Brown) PCM58 is a vintage 18-bit R-2R ladder DAC chip, and its sound signature is associated with the classic "multibit" sound. While its performance is not as precise as modern delta-sigma DACs, many audiophiles praise its musicality, dynamic quickness, and natural sound."
They mentioned key characteristics of the PCM58 sound signature including:
- Warm and organic
- Convincing dynamics
- Natural timbre
- Wide soundstage
- Lower resolution/less detail (compared to modern chips)
- Implementation dependent
Based on comments that Benjamin has shared with me, as well as the AI verbiage, I expect to hear an emotionally musical flow with nuance, that is also smooth and organic sounding. That description sounds analog-like however, as with many things in our audio hobby, there can be trade-offs between sonic characteristics such as smooth and rich vs. detailed and incisive, as one example. The success of a design can depend on how well the various polarities can be integrated to result in proportions that are musically satisfying. Even then, not every sound signature is going to satisfy every listener.
Regarding the Aries Cerat Helene, in my system and in my opinion, it displays all of the considerable strengths of the Mystique X SE and takes a few of them a bit farther for a wholly satisfying result. It is every bit as organic sounding as the X SE, with a bit less mid-bass warmth, and a touch purer sounding treble. Tone is spot-on and there is a sense of liquid clarity overall that always serves the music. The bass is deep and powerful and, to me, the Helene DAC performs well on all types of music, at least in my system.
I really look forward to hearing the Mystique Z, and comparing that directly with the Mystique X SE and the Helene.

