LATEST ADDITIONS

USB Dongle DACs are taking off, and companies like HRT are attempting to combine small form factor with features and sound quality. Unlike Audioquest's Dragonfly, the microStreamer sports two output jacks, one fixed and optimized for line level destinations and the other with variable out for headphones.

The microStreamer will retail for $189.95, can handle streams up to 24/96 and is connected to your computer or source with a short USB cable. The company explains that this approach prevents mishaps where the dongle could damage your computer's USB connector if it was plugged straight in like the Dragonfly.

The Music Streamer HD has been upgraded to include both balanced and unbalanced output jacks (the previous model had one jack with a special adaptor) and can stream up to 24/192 via USB2. Retail price is $449.95

"Head Monster" Noel Lee is known as a shrewd, successful businessman, but I think that if he had taken a different career path he could have made a great evangelist. His CES press conferences have very much feeling of revival meetings, and, like an evangelist, he works hard at whipping the crowd into a frenzy. Given the largely skeptical audience of media representatives, Lee is not always successful in this, but you certainly can't fault his enthusiasm. (Consumer electronics journalists are a tough crowd.)

NAD has jumped into the headphone arena with their VISO HP50 ($279), an extremely lightweight and comfortable, noise-isolating, over-the-ear design. The detachable cable plugs into either the right or left earcup and has smart phone and microphone controls. NAD’s “RoomFeel” technology is said to improve stereo sound.

With all the headphone options out there, it might be hard to find the one that’s right for you. If quality, rather than superficial associations with aging rock bands, is what you want, one outstanding option would be Sennheiser&#151a company that’s been perfecting the art of headphones even longer than Motorhead’s been playing “Ace of Spades.”

And that's a long time.

Mike Yee (shown here holding his DAC) has been working for the past several years on a unique approach to DAC design. He has invented a technique (for which he has applied for a patent) he calls MODR or Musically Optimized Digital Reconstruction.

Yee uses an FPGA (field programmable gate array) to intercept the digital signal as it comes into the DAC. The FPGA provides a proprietary "pre-emphasis" conditioning of the signal before the DAC chip to "remove the DAC's effect on quantization error." After the DAC chip, an analog stage provides de-emphasis prior to output.

There are SPDIF and Toslink 24/192 inputs as well as a 16/48 USB port. On the front are LEDs to indicate the sample rate. Introductory price is $1,000

Meridian's Bob Stuart is holding the recently introduced Media Source 200 which allows current Meridian Digital Media System (Sooloos) owners to add another zone to their system for $1,000. As with other components in the MDMS line, the Media Source 200 includes Meridian's apodising upsamping filter.

There is an ethernet jack on the rear to connect to the network and then a combination analog/digital jack so you can connect the Media Source 200 via stereo analog cable or optical SPDIF. There is also a SpeakerLink output for connecting directly to Meridian DSP loudspeakers.