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See Ayre QB-9 Twenty Upgrade Announcement

“Ayre QB-9 Twenty Upgrade” copied from an Ayre email announcement.

“The QB-9 was one of the most successful Ayre products ever. There are thousands of them out in the world, and to many owners, the QB-9 is still their favorite piece of audio gear. As part of our commitment to providing a lifetime of enjoyment from Ayre products, we are releasing an update for the QB-9 with the newest technology from the 8 series. The "Twenty" update for the QB-9 brings it back to the cutting edge of technology, giving QB-9 owners the excitement of discovering their music library all over again!

New QB-9 Twenty Features:  We have made a number of innovations since the release of the QB-9. Here is what has been improved with the Twenty update:

  • Diamond output circuit improves musicality and bass response.
  • A new JFET differential stage lowers the noise floor.
  • AyreLock power supply regulation for better rendering of fine musical detail.
  • New AC noise filtering for improved resolution.
  • Custom Ayre Asynchronous USB technology further reducing electrical noise in the system.
  • New ESS DAC chip for improved signal to noise ratio and spacial detail.
  • Six layer board design for optimal circuit isolation.
  • Proprietary reclocking to eliminate USB domain jitter.
  • PCM play back up to 384 kHz
  • Native DSD capability up to DSD256 (4x)
  • HDCD decoding

Retail Available QB-9 Twenty Upgrade. $1,500 August”.

This new Ayre QB-9 Twenty Upgrade looks very interesting. I wonder how it sounds.


hgeifman

Showing 1 response by tomic601

tomic601's avatar
tomic601
12,865 posts
 
Presumably He bought a used DAC out of warranty and not from his local dealer who should do what ? At a minimum ship it yourself to Ayre on your $can and see if it’s broken or normal transformer hum , 
and why hijack a perfectly good thread on the twenty upgrade...

now if I were the dealer and you brought it in, plugged it into my pole pig and it hummed more than normal ( and yes I have an Ayre DAC and an A2D ) , then the next time I called Ayre, I would advocate for a transformer replacement...


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