DAC1党的新玩具 DAC1 HDR
http://www.benchmarkmedia.com/system1/files/dac1-hdr-silver-front.jpgDAC1 HDR - Let the Music Engage You!
The DAC1 HDR is an all-in-one reference-quality stereo pre-amplifier. This stereo pre-amp
brings together all the best features and performance of the award-winning DAC1 family with
the convenience of an intelligent remote control solution. The DAC1 HDR combines some of
Benchmark’s finest engineering accomplishments into one device: the DAC1 digital-to-analog
audio converter with UltraLock™ clock system, AdvancedUSB™ computer audio playback
interface, and the legendary HPA2™ headphone amplifier. The unique remote control solution
of the DAC1 HDR is built around Benchmark’s new HDR-VC™ (high dynamic range volume
control).
Benchmark’s product designs have achieved unprecedented sonic purity due to an
uncompromising engineering philosophy: eliminate digital distortion artifacts, establish a
pristine analog path, and maintain sonic integrity regardless of external factors. The DAC1 HDR
continues this tradition of excellence.
The remote control solution of the DAC1 HDR has an intelligent implementation of dimming
and muting. The ‘Dim’ (quiet) and ‘Soft-Mute’ settings of the remote control can be easily
adjusted independent of the normal volume setting. The DAC1 HDR remembers and recalls
your specified ‘Dim’ setting. This feature is ideal for HDTV users, as it allows you to set your
preferred ‘Dim’ level for commercials, etc. The ‘Soft-Mute’ function fades down the volume to
the ‘Dim’ level before muting and smoothly raises the volume to the normal level after unmuting.
With a generous offering of inputs and outputs, the DAC1 HDR serves as the heart of
expansive media and entertainment systems, optimizing the signal path from the various
sources to the amplifier. The DAC1 HDR will enhance the audio performance of your digital
television, digital cable box, DVD/CD player, computer, music/media server, satellite radio, and
any other device with a digital audio output. Also, the HDR-VC™ will control the pristine path
for an analog source, such as a phono stage, FM tuner, iPod, VCR, tape deck, etc.
All digital inputs on the DAC1 HDR (including the USB) feature Benchmark’s jitter-immune
UltraLock™ clock system. The USB interface operates with Benchmark’s AdvancedUSB™
native 24-bit, 96-kHz USB technology. The DAC1 HDR features a high-current output stage
designed to drive even the most difficult loads. Other features include selectable headphone
gain ranges and an auto-mute function for muting the main outputs when headphones are
being used.
HDR-VC™ High Dynamic Range Volume Control
The DAC1 HDR features Benchmark’s HDR-VC™ (High Dynamic Range Volume Control). The
HDR-VC™ is achieved with a custom-built motorized Alps potentiometer. The DAC1 HDR’s
motor-driven volume control maintains the dynamic range of the converter and audio output.
In contrast, digital volume controls reduce dynamic range, and analog volume IC’s introduce
distortion and noise.
The acclaimed DAC1 D-to-A conversion system
Recording studios, mastering engineers and audiophiles have grown to rely on
Benchmark for critical digital audio conversion for more than 10 years. The superior
performance of the award-winning DAC1 has made it the ‘Benchmark’ of D-to-A
converters. With the DAC1 HDR, this built-in state-of-the-art converter will improve the
sonic performance of your digital audio sources, including your computer.
Jitter-Immune UltraLock™ Clock System
Benchmark’s proprietary UltraLock™ clock system achieves an unprecedented immunity
to jitter. Many modern (and expensive) converters suffer from signifi ant jitter-induced
distortion, generating non-musical sideband tones and digital distortion. Benchmark’s
highly-regarded UltraLock™ clock system ensures that jitter is never a problem, even
under extreme conditions.
Even in the presence of extremely high input jitter, no jitter-induced artifacts can be
detected on the outputs of the DAC1 HDR (using state-of-the-art testing equipment
by Audio Precision). UltraLock™ will block more then 12.5 UI of jitter (@ 1 kHz). The
UltraLock™ clock system easily outperforms even the best-designed two-stage PLL
designs.
The bottom line is this: Benchmark converters will consistently and faithfully deliver
truthful audio without jitter-induced artifacts, no matter what variables are present.
AdvancedUSB™ Audio Technology
The USB interface of the DAC1 HDR operates with Benchmark’s unique AdvancedUSB™
technology. Unlike many USB-equipped D/A converters, Benchmark’s AdvancedUSB™
technology supports 24-bit audio at sample rates up to 96 kHz without the installation of
any drivers or other special software. Benchmark’s UltraLock™ clock system isolates the
converter from the high levels of jitter that are found on USB interfaces. The DAC1 HDR
achieves transparent, audiophile-quality playback through a true plug-and-play solution.
Audio streamed via USB is subject to significant amounts of jitter. The AdvancedUSB™
interface utilizes the UltraLock™ clock system. Consequently, the performance of the
USB input is equal to the performance of the other inputs, regardless of the jitter present.
The DAC1 HDR is natively compatible with Windows Vista/XP/2000 and Mac OS X. As a
native device, there are no drivers or other software required to install or configure.
HPA2™ Headphone Amplifier
The DAC1 HDR includes the HPA2™ - Benchmark’s signature high-current, 0-Ohm
headphone amplifier. The HPA2™ is the ultimate reference headphone amplifier. It will
deliver the full rated performance of the DAC1 to the headphones. The HPA2™ maintains
less than 0.0003% THD+N under a full load from two sets of headphones. The DAC1
HDR has two 1/4” headphone jacks on the front panel.
1895美刀:@
http://www.benchmarkmedia.com/system1/files/website-dac1-pre-rear_0.jpg :Q :Q :Q
为什么没有AES输入 在30W的系统里面听过，没撒不好的
具体如何自己听过再说吧 越来越眼花缭乱了~ 接口有点奇怪。 advanced usb tech，光这名词下来大概就有许多有米嫌麻烦之人要试 没有AES/EBU输入可能是因为产品是为业余发烧友设计的，像DAC1 USB Pre。不知音质如何。 :lol 用USB口的朋友只享受到其音质的30% 1pre加了个遥控 还是老老实实当解码比较好，能出个外接电源版本，价格合理的话就更好了。其他都是骗钱 比較好奇那個HDR技術
看來似乎不只是類比衰減這麼單純 原帖由 takase 于 2009-4-16 15:18 发表 http://www.headphoneclub.com/bbs/images/common/back.gif
比較好奇那個HDR技術
看來似乎不只是類比衰減這麼單純
看说明 应该是用DSP来控制的数字音量调节 TheHDR-VC™ is achieved with a custom-built motorized Alps potentiometer. .....
In contrast, digital volume controls reduce dynamic range, and analog volume IC’s introduce distortion and noise.
特製的alps衰減器，我想數位音控IC應該是拿來做反例的
相對於LAVRY DA11，DAC1 HDR無疑的採用了正攻法啊
[ 本帖最后由 takase 于 2009-4-16 15:31 编辑 ] 没看懂遥控上操作HDR-VC的说明
如果按照这段解释来看 有一个软静音 应该不是继电器
另外可以在电位器音量的基础上进行减轻音量的操作 这个操作用机械电位器怎么实现的呢？
双联马达做法？ 呃。。。。。。。。。。。。:Q
还是太米了 ...
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