Network DAC Reviews

A Network Node
The Bluesound Node is a network player—Ethernet, Wi-Fi, or Bluetooth in, out comes your choice of digital (Toslink) or analog (RCAs) music. The Node supports MP3, AAC, WMA, OGG, WMA-L, FLAC, ALAC, WAV, AIFF in resolutions up to 24/192, gapless playback, cloud services including WiMP, Rdio, Highresaudio, Slacker Radio, Qobuz, Deezer and Juke (all of these services require an account and some have geographic restrictions), and Internet Radio via TuneIn Radio. You can also play music from an Internet URL. All of this functionality is wrapped up in a relatively small round-cornered display-less cube in your choice of high gloss white or black highlighted with a brushed steel strip running down its center. Control of the Node is performed strictly through the Bluesound app for iOS and Android devices.

NAS/Music Server/Streamer/CD Ripper/DAC/Headphone Amp
I'm sure some will want more, but that's a lot of functionality fit inside one relatively small box. The Bluesound Vault 2 makes computer audio easy—a one box solution for all of your computer audio needs. No need to fret about which NAS to buy, what streamer, which DAC and headphone amp, and there's no need for a computer. You will need a tablet for remote control and a love of music to make it all work as intended.

Cary Audio, Raleigh, NC
I can still remember visiting audio retailer Audio Nexus in Summit, NJ back in the '90s and seeing the lovely Cary CAD-300SEI integrated amp which was at the time outside of my comfort price zone. I was heavily into exploring single-ended tube amps and ended up with my first love, the Sun Audio SV-300BE followed by many a Fi amp (I still own the prototype Fi 45), and finally landing very comfortably in the land of Shindo, albeit outside the SET camp. To say that Cary Audio represents an important part of our hi-fi history is to state the obvious and to say that I was looking forward to spending time with their latest DAC would be an understatement.

Trickle Down
John Atkinson praised the dCS Vivaldi stack (114,496) in his Measurements section of Michael Fremer's review; "Without any doubt, this was the best digital playback I have experienced." and "When I measured the company's earlier four-box system, the Scarlatti, in 2009, I concluded that it offered 'state-of-the-art measured performance.' The Vivaldi improves on the Scarlatti's performance in almost every way. Wow!" The dCS Rossini DAC inherits a number of things from the Vivaldi including the dCS Digital Processing Platform.

The Empirical Audio Overdrive SX Ethernet DAC/Pre represents Steve Nugent's most current thinking on DAC design. Steve, chief designer and owner of Empirical Audio, has been building Empirical Audio DACs since 2009. His engineering background and experience in digital design have served him well having come up with many original creations and unique approaches in DAC design. The Overdrive SX builds on the basic design of his Overdrive SE, a DAC I reviewed for AudioStream back in 2014.

"Timing is everything." Tommy Shaw
The Ravenna IP technology allows for syncing of multiple audio devices over Ethernet using the Precision Time Protocol (PPT) achieving clock accuracy "in the sub-microsecond range". This comes in handy in recording studios where Merging Technologies got its start, and earned its reputation, back in 1990 in Chexbres, Switzerland. As we all know, timing is everything in home audio, too, so Merging Technologies (MT) imbued its NADAC with, among other things, the Ravenna IP technology.