M2Tech hiFace192 + Theta Gen Va synergy?

It certainly did enhance my system from the first note. (Krell HTS 7.1 pre/pro) In particular, the bass sounded tighter to me. Now it has gone back to Ireland for some modifications which are essentially to drive the hiface with two small batteries instead of the USB power provided by the Mac Pro. Cleaner power should provide cleaner sound. . . so I have read. Other reviews have indicated that the modifications provide another big step up in SQ. We shall see.

Hopefully your thread will breathe new life into some older DACs!!

I have used both a HiFace with my Theta Gen Va (balanced, 96K) and an ART Legato with a Theta Casablanca II (Xtreme DACs). For RBCD, the Legato beats the HiFace with reduced haze, glare, and sibilance, giving me the most liquid sound I have ever had. However, the HiFace sounds very nice, especially so with a 5M BNC cable. It might sound better in other systems, depending on the effect that my PC's power and grounds have on it. The Legato uses its own power and achieves galvanic isolation. I can get the HiFace closer to the Legato with a Monarchy DIP, but the Legato still wins.

Either of them beats my Theta Jade transport (which was connected using a 1M AES/EBU wire).

I think you're right on the money regarding the sound quality of the Gen Va. It was, and is, top-shelf. Effectively, the asynchronous USB interface performs a very similar function for Jurassic DACs that buffering/reclocking does in the Generation VIII.

Given that a Gen Va can be had for $1500 or less on Audiogon, pairing it with a top-flight asynchronous USB to SPDIF converter makes a compelling investment.

Since I'm using the BNC output of the USB interface(s), and a modest 5M BNC->BNC cable between the interface and the DAC(s), I am able to unload the 1M Siltech wires I used for RCA and AES/EBU connection for more than the cost of a USB->SPDIF interface.

Mryan, Thanks for your response. Did you compare the HiFace directly to the Legato through the Theta Gen Va?
I read the info on the Legato and they are not clear on their "very well designed" clock. The hiFace uses a crystal, very precise and cheap. If the Legato sounds better then the power supply might be very important. In which case, the power supply mods for the hiFace and also the new model might be interesting. I am using a normal 75 ohm spec bnc cable and have changed the input jack on the Theta to bnc many years ago. I personally think the bnc spec cables are key , and thay those using rca jacks for digital trahsmissions are wasting a lot of money. MUSE only uses bnc jacks for their products.

I think the Legato and the HiFace are in different manufacturing leagues; the Legato is in a 9x6x2 aluminum case with its own internal power supply. Given the reports of the improvements in the HiFace using batteries, I suspect the power is important. However, different USB cables were important to this degree: the best-sounding ones with the Legato omit the power lines altogether. Enough said about power.

My Gen Va and the little HiFace (which I bought while I waited my turn in the ART line) never got happy together; there was too much glare/haze (with the zingy strings and sibilance).

The Legato (which only does 44.1) transforms the Gen Va, which isn't a bad DAC to start with. The glare and haze are greatly, greatly reduced; the sound comes from a blacker background, and the highs are sweet. The Legato beats my Jade whether the Jade uses optical (Theta), BNC, or AES. I don't think you have heard what a Gen Va can do until you hear the Legato.

My Gen Va is a late model with 96K capability. At $2K or so for the pair, (Legato,Theta), you've got some classic high-end sound. Of course, I paid $6500 for the Gen Va back in the day, which is why I am motivated to extend its life into the computer age.

I think a comparison between the Legato and the HiFace is unfair to the HiFace -- it isn't really built to compete (and costs about 1/3 as much). The HiFace EVO may be a better comparison, but is too new to know.