My visiting friend and I compared various DACs over the weekend, although we won't be finishing until he gets back from a side-trip next week. The initial plan was to compare:
- Benchmark DAC2 HGC
- Chord Qutest with external linear supply
- Denafrips Pontus II
- T+A DAC 200
However, this thread got me curious about the Topping DX3 Pro+, so I ordered one of those to throw into the mix.
To hook all these up with easy switch-over, we had to get inventive. I have a Benchmark HPA4 pre-amp, which allows me to level match all the inputs. We can connect only four sources (2 balanced and 2 RCA), so I decided to test the Topping first, leaving the Chord Qutest out of the mix until the next round. To feed the digital signal to them all, I used:
- Pi3 running PiCorePlayer, emulating a Squeezebox. I fed the USB from this into a Denafrips Iris DDC, which gives us various digital outputs.
- Squeezebox Touch with the EDO extensions installed, synced with the Pi3. This gives us two more S/PDIF outputs.
I know some will think the DACs hooked up to the Iris will automatically get a better shake, so we tried various DACs with and without the Iris. It seemed that the Denafrips Pontus II was helped most by the Iris. I could discern no difference with the Benchmark DAC2 and T+D DAC200. I didn't bother checking the Topping, because it would be silly to plug a cheap DAC onto the end of a much more expensive DDC.
Our initial run showed the following:
- Topping DX3 Pro+ - This was the least enjoyable of the DACs. The top end was over-accentuated and confused; the general sense of flow seemed impeded and muddled; and the overall presentation didn't make sense. I could not live with this DAC for any length of time, and I will be returning it. Sorry Alex.
- Benchmark DAC2 HGC - This was very clear and exacting. Wonderful details and balanced frequency response. Unfortunately it's lacking in rhythmic flow. In a sense, it's too "reasonable" and level-heading, lacking in enthusiasm and excitement. One can understand why this is used in so many studios.
- Denafrips Pontus II - This sounded much "darker", without the clearly defined edges of notes as presented by the Benchmark. However, it created a larger sense of scale and more enjoyable sense of rhythmic motion.
- T+A DAC200 - As I've noted before, this DAC seemed to bring the best elements of all the other DACs. Details and clarity were there; tonal balance was phenomenal; PRaT was in full force; and the overall soundstage and imaging were quite wonderful. Nothing to complain about (except the price).
Next week we'll bring the Chord Quest into the mix, to see where it sits. I've also got a Weiss DAC203 on order, but I don't expect it to arrive in time for next week's session.