Topic: Grace Design m903 reference headphone amplifier, DAC, monitor controller

[OFOTD]

Just announced!

http://www.gracedesign.com/products/m903/m903.htm

Ten years ago, we launched the model 901 headphone amplifier. 4 years later, the m902, which set the standard for a new category of compact, precision playback tools. Today, we proudly unveil the m903, which is simply the most refined and feature rich headphone amp, DAC and compact monitor controller available.

The m903 keeps everything great about its predecessors, adds some useful new features, and ups the ante with even more breathtaking audio performance. A new volume control provides higher headroom and lower distortion and noise. New generation DAC's and ultra-low noise balanced current to voltage converter yields even more musical performance compared to the m902. Improved s-lock PLL circuitry delivers even lower phase noise and jitter. An improved power supply isolates headphone amplifiers, line amplifiers, DAC's and digital logic, resulting in lower noise and distortion.

Perhaps the most exciting improvement is the all new high speed USB interface. This cutting edge technology provides a completely asynchronous data transfer mode which allows for bit-perfect USB playback with zero interface induced jitter. This new interface affords standard driverless USB Class 1 operation on Windows and Mac up to 24bit/96kHz and USB Class 2 audio for 24bit/192kHz operation on Windows and Mac (drivers needed for 192kHz operation under Windows). This is computer-based audiophile playback, perfected.

New crossfeed circuitry is even more useful and includes a gentle compensation to eliminate the perceived loss of low frequency content. Both balanced and unbalanced line outputs are now standard, with individual volume controls for each. We have even included a mono mode for checking a mix for phase issues or simply monitoring in mono. These improvements cement the m903 as the perfect compact, audiophile grade monitor controller, even for larger scale production environments with more than one set on monitors.

A full complement of analog and digital inputs are provided (balanced, unbalanced, AES3, S/PDIF, TOSLINK and USB), which are selectable via a precision rotary front panel switch. And we offer an updated optional infrared remote control, which provides essential control for anyone working out of reach of their m903.

Advancing the tradition of unmatched audio performance and functionality, the m903 is now the ultimate solution for high resolution audio playback. From the very top mastering engineers to the most discerning audiophiles – it is a must for anyone searching to discover new depths in music and sound.

[Genghis Cougar Mellen Khan]

This new interface affords standard driverless USB Class 1 operation on Windows and Mac up to 24bit/96kHz and USB Class 2 audio for 24bit/192kHz operation on Windows and Mac (drivers needed for 192kHz operation under Windows). This is computer-based audiophile playback, perfected.

Awsome!

 

[75McTapHead29]

Just announced!

http://www.gracedesign.com/products/m903/m903.htm




...

I have recently bought this headphone amp and I guess it is very good. It is combined with Beyerdynamic DT 880 headphones. The sound is cool to hear. I'd love to suggest it to others because it is also a multi-channel headphone.

[Wiggler]

How long ago did you receive your M903 and what supplier did you purchase from.
I'm having trouble finding suppliers that have received shipment of this new product.

[Javier Cinakowski]

"I guess the sound is cool and quality to hear."   

No offence, but that isn't the type of review i'd expect from someone who just spent serious cash on a piece of pro gear.

[rjp]

"I guess the sound is cool and quality to hear."   

No offence, but that isn't the type of review i'd expect from someone who just spent serious cash on a piece of pro gear.

Looks to me like that "review" was bot-generated... note the spammy link in 75McTapHead29's signature. Newer spambots try to disguise themselves with plausible-sounding text. Check its posting history and you'll find that its other post is also suspicious.

[H₂O]

I am stylish try headphones with this monitor multichannel sound great.