Ayre QB-9 USB DAC

Cdm, if it doesn't divert the thread too much, how did the 840C hold up against this interesting set of comparisons?

Tony,

As you know, everything is so system dependent... but I was very happy with the 840C (DAC input) for quite some time. I used it with the HiFace, modded HiFace and Halide Bridge, and the 840C was very responsive and revealing during each phase.

That said, the Tranquility DAC removed the digititis, or etchy top end that always seemed to plague the 840C. The Tranquility is just in a completely different league. I also prefered the QB-9 to the 840C, by a wide margin. The Ayre is a great DAC, but the Tranquility SE took my system to another level. I'm spending WAY more time listening these days!

Tony,

As you know, everything is so system dependent... but I was very happy with the 840C (DAC input) for quite some time. I used it with the HiFace, modded HiFace and Halide Bridge, and the 840C was very responsive and revealing during each phase.

That said, the Tranquility DAC removed the digititis, or etchy top end that always seemed to plague the 840C. The Tranquility is just in a completely different league. I also prefered the QB-9 to the 840C, by a wide margin. The Ayre is a great DAC, but the Tranquility SE took my system to another level. I'm spending WAY more time listening these days!

I will to get a hold of a QB-9 and do a fair head to head comparison in my own system. If the QB-9 is as good, I wil probaby keep it for its hirez feature. Anyone dealer allow home auditions of the Ayre?

Feel the same way as Horacio. I'm usually open minded about audio components, but when year old thread is resurrected just to promote a competing product by small number of people that cross post to several different threads, it makes me wonder. I did look at the web site for Tranquility DAC. There is very little technical information about the DAC there, other than the use of non-oversampling DAC. There are a dozen different NOS DAC sold on eBay for less than $500. It's not clear to me how this one is different from the rest of the pack, other than the use of $30 extruded aluminum case from Hammond Manufacturing. I would love to hear from someone who compared Tranquility against another NOS DAC, but perhaps in a different thread.