Review: Concert Fidelity DAC-040 DA converter


Category: Digital

Starting in 2005 I worked myself up the chain of the very fine DACS built by Accustic Arts of Germany, finally ending up with their Reference Tube Hybrid. I have auditioned over six very highly regarded DACS in the last couple of years and found them to be quite good, but none of them exceeded the performance of the AA Reference Tube Hybrid in my system. I do not use high resolution material, only Redbood CDs, so these auditions were only based on this format because my large collection of music is composed totally of this material. Well, I know nothing is the "BEST" in high end audio, there are many fine pieces of gear when you get to a certain level of excellence. However, I thought that maybe the evolution of DACS that play the standard format had got to the point that it could not get really that much better. Each DAC might offer different slight flavors but not a qualitative shift to a much higher level of performance. It has turned out that I was very wrong regarding this assumption after auditioning what has become my new reference, the Concert Fidelity DAC-040.

The designer of the CF DAC-040, Mr. Masa Tsuda believes in very short and clean circuits in all of his designs. The analog section of this DAC is very similar to what he uses in his highly regarded reference LS-080 linestage. They both use 12AU7's and a 6CA4/EZ81 full-wave rectifier tube. It took over two years of on-going listening tests for Mr. Tsuda to find the NOS DAC chips to use in his DAC, there is no over or up sampling and any type of digital filters to be found any were in this piece, that delivered the sonics he was looking for. Which DAC chips he finally decided on are confidential and not disclosed. All the Concert Fidelity and Silicon Arts, same company, pieces are beautifully built to an exemplatory level including the DAC-040.

Why was I taken so aback by the sonic performance of the CF DAC-040, here's the reasons:

1) By far the most natural timbres and harmonic colors I have ever heard coming from a digital front end.

2) The microdynamics and prat of this DAC are amazing, yet it still allows the listener to relax into the music without giving up the punch and kick of the music.

3) What I refer to as image density or a 3D quality, what most would just call palpability, of each player with air around them on a layered soundstage was the best I have ever had in my system.

4) The CF DAC-040 creates a very open and deep soundstage with great layering in a natural way that allows you to have the illusion that your in that acoustic space.

Believe me, the AA Reference Tube Hybrid DAC is no slouch in these sonic qualities, yet, it was no were close to having these special attributes that the CF DAC-040 was providing in my system. To use very subjective terms this DAC has the most musicality/naturalness that I have experienced that just draws you into the music. Dare I say that a lot of listeners could be fooled into thinking that they were hearing an analog front end, instead of a digital source, I think so.

I end all my reviews by sharing that there is no "BEST" piece of any kind of gear, but many terrific ones. Personal taste and system synergy always comes into play. If your looking for one of the best Redbook DACS around today I highly recommend you audition Mr.Tsuda's "baby", you will be in for a sonic treat.

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teajay
Hello Hasan,

Congrats on your choice of DAC, welcome to the elite!

With regard to tube selection in this dac, it is very hard to say which would sound better to you out of your choices, and replicating what worked well in your headphone amp would not necessarily offer similar results in the dac. Trial is the only real way of knowing I'm afraid, but this is trivially easy in this piece anyway. My current preference is for Mazda 6189 or the Tung Sol 12BH7. Sometimes the BH7 is a little congested, so for rock etc it is great because it has a deep and strong bottom end, with real punch. The 6189 gives a slightly more balanced output, very refined and holographic, great for jazz, classical, and pretty much anything really. I use the Mazda 6189 in the CF080LSX2 pre amp also.

With regard to actually using the BH7, there are some differences to AU7's, and you are perfectly correct, Masa Tsuda does recommend AU7 in this piece, but BH7 is ok, it won't cause any harm.. However, Masa Tsuda is 'the man', an audio designer and manufacturer that I have unending respect for!

In addition, the upgrade to this DAC of a battery to power the dac chip itself is nothing short of astonishing. Sublime is a word that keeps appearing in my head when i'm listening to it, clarity, transparency, tonality and depth of the soundstage have all been helped with this implementation, as have dynamics. It seems that you are 'exposed' to the recording more and are delving deeper into the event that took place in the studio, concert hall or wherever. I'm now very curious to test it with a top level transport such as the MT or Zanden as Lloyd knows:-))

Best Rgds,
Paul.
gents- I am looking at a preowned dac -040- How much is the upgrade and do you have to send it back to the factory- On a side note I am also looking at the 080 pre- Since My ATC 100's run xlr would it be a problem using a xlr/rca converter- thanks- I currently am running the Ayon cd-5 and assume that the CF will smoke it???- thanks