Compared to the audio research DAC 7 gave the Ayre QB 9 (2800 euro) Although not quite as flattering himself, played but still slightly stronger muscles.
- D/A converter Ayre QB 9
- Data sheet
It seems indeed strange something, if a 2800 euros more expensive D/A converter such as the Ayre QB 9 with only a single input comes – even as a USB socket. This is however not stinginess or arbitrariness: rather, is actually not so much separate D/A-converter Ayre Chief thinker and-lenker Charles Hanson, but prefers more integrated CD player.
Not without reason: by placing in a housing the electronic clock default for the entire system can be close when the converter arranged and even the time base for the drive use – ideal for perfectly synchronous and low-jitter data supply. Separate converters hang mind connection technically on a pretty long leash: you need their tax time laboriously from the stream provided by the digital output of the drive distill out – what almost conjures up Jitterprobleme.
Computers with their high-frequency interference clouded housings, no way led past but even for Charles Hanson on the outboard D/A converter. However, he had a lot come up, remake fit to the QB 9 for perfect interaction with the USB interface. To do this, Ayre took with Gordon Rankin a highly competent partner in the boat: the Chief of wavelength audio belongs to the few developers worldwide that are equally at home in the audio, as well as in the field of computer.
Ayr e: jitterfrei thanks to “asynchronous” mode
Also the key idea behind the QB 9: the Ayre not as usual came from him synchronized on the digital data stream provided by the computer, because the necessary phase rigid loop (PLL) inevitably cause jitter. Instead, it uses an own, highly stable time base that 1020 B Gets the audio data with perfect timing from a special streaming controller and memory module called TAS and feeds derived converter chip (PCM 1796) of Burr-Brown. Audio data for its store, the streaming controller negotiates supplies directly to the computer.
Full two years Gordon feilte Rankin on the software programming of USB controller chips, so the QB 9 without special drivers communicates perfectly with both Mac and PC – it may be even sound diet in 24/96 format. Like the audio research is also the Ayre whole Schaaren of individual transistors in its output levels – thanks to SMD technology is however very compact and the entire circuit. Typical for Ayre components without the QB 9 on the over all feedback, which should benefit the sound quality.
That cooperation by Charles Hanson and Gordon Rankin was extremely fertile, proved the Ayre in the listening test: he not only tried to gain the tester by special sound characteristics for themselves. Instead played the QB 9 so convincing, that was left no room for doubt at all. When he played, it was clear to all: so it should sound.
Compared to the audio research DAC 7 gave himself the Ayre is not quite as flattering and widely, something for this but left the muscles stronger play. In addition, he had the ability to work out wonderfully suspenseful fine dynamic structures in the music.
More accurately delineated and free the QB 9 with music files in 24/96 format played. The perfect balance between precision and musicality finally rewarded the tester with 66 points – thus the Ayre QB 9 is the new PC Converter reference in stereoplay.
Ayre QB 9
Technical data and test results
|Dimensions (W x H T) Height depth||21.6 x 7.6 x 29,0 cm|
|Digital volume control|
|Analog volume control|
|Display sampling rate|
|Word width display|
|Digital effects loop|
|Maximum sampling rate RCA / AES||0|
|Maximum sampling rate optical||0|
|Maximum USB sample rate||192|
|USB asynchronous mode USB|
|Adjustable digital filter characteristics|
|Number filter options||2|
|Have||Pure USB converters, asynchronous mode.|
|Inputs CD player|
|Digital AES / EBU||0|
|Output D/A converter|
|Outputs XLR stereo||1|
|Outputs headphone 6, 3 mm||0|
|Outputs headphone 3.5 mm||0|
|Digital output to RCA|
|Optical digital output|
|Digital output other:|
|Short conclusion||Only for USB port of imaginary converter with phenomenal sound, which takes signals in 24 bit / 96 kHz format from the computer.|
|Sound||Absolute top class|
(maximum 70 points)
|Sound points preamplifier|
(maximum 10 points)
(max. 15 points)
(maximum 10 points)
|Price / performance||Very good|
|tested in issue:||2 / 10|