As is necessary thank you Todd for allowing us to demo this wonderful unit, and thank you to Questyle for supplying it.
Questyle CMA600i - Detail Powerhouse
Packaging and Build Quality
When first receiving this my expectation were high on the performance of this unit by looking at the price tag ($1299). The CMA600i was incredibly well protected; double-boxed with foam cutouts in the second, retail box. In the box was the CD drivers, the remote, and the surprisingly short power cable. The machined aluminum body is exquisitely crafted and stunning to look at. The dial, despite being digital, feels fantastic to use if not a little firm.
Power and Sound
After only using the Modi 2U, Magni 2, and Aune X7S extensively as my home drivers, I can confidently say this is by far the best Amp or DAC I have heard. The cans I used tried with the 600i are the LCD-X, HD600, HE 400i (minimally), and the TH-X00 Ebony (with a broken headband unfortunately
).
The DAC is unequivocally superb to my usual setup unsurprisingly. I never quite adjusted to just how
crisp snares and hi-hats would sound despite putting easily 20+ hours onto the unit. As the others before have mentioned, the DAC does have extreme separation, I didn't think it sounded insanely unnatural though it was very odd being able to feel the physical space between instruments at first, the farthest I would go would be to say it lacks some amount of musicality. Once I adjusted to it, the DAC sounded
very accurate and neutral, and I often wished I still had my HD800 so I could have the most analytical setup possible. As you have probably noticed in my image I have a Valhalla, which I have connected to the 600i. Once again the DAC goes above and beyond anything I have heard outputting into my Valhalla 1.
The amp, with it's quad chipsets for the balanced output, was more than enough to drive my HD600 and LCD-X of course. Like the DAC, it sounded accurate and lacked some musicality (though I prefer a slightly more analytical sound) though I wouldn't fully expect a solid state amp to be musical, that's what tubes are for. The night before I was going ship the unit to the next person I received my CA Andromeda in the mail, I was excited to try them with a DAC/amp this nice however I soon realized that there is not a low power mode which is rather odd considering the lower end CMA400i has a low output impedance 2.5mm balanced output for IEMs. This was pretty much the only complaint I had about the entire unit. Of course, one of the most important things I wanted to compare was the difference between the standard 1/4" output vs the balanced XLR. I had the XLR for my LCD-X as well as created a XLR cable for my HD600 specifically for reviewing the unit. There was definitely a difference, that much I'm certain of. Though it wasn't huge or worth going completely balanced for. I would also say it varied between my two headphones, with the LCD-X feeling slightly more separated through balanced. Other than that, it mattered very little whether the headphones were driven through a 1/4" plug or a XLR plug.
Overall the unit has given me a dangerous taste of higher end DAC/amps that before this, I had no way of trying. This has me seriously considering the CMA400i that is up on Todd's website.