|
|
Crystal DA 是一部具有USB输入接口，S/PDIF输入接口，光纤输入接口，独立DA转换，音频线路输出，有耳机功率放大输出的小型一体化个人音频系统
本机体积小巧，（160*110*45mm）采用全铝精工制造，造型精致，重量较轻，仅重0.68kg它可以成为您在出差工作的环境，办公室，宿舍等不方便使用体积较大的台式音频设备的地方来欣赏音乐的最佳伴侣
Crystal DA是采用Cirrus logic 动态达到120DB，失真加噪声极低-107DB 的CS4398集成电路来完成DA转换，数字接收采用Cirrus logic的可自动识别支持32KHZ-192KHZ工作的CS8416，
USB则使用BB的PCM2704转换成SPDIF输入至CS8416。
模拟电路部分使用BB音频专用运放OPA2134，5%高精度贴片电容0.5%贴片电阻。
耳机放大器部分使用BB音频专用运放OPA2134驱动带恒流源的A类缓冲电流输出级，采用输出电流能达到800MA的小功率管，保证足够驱动能力的情况下，还能得到细腻的声音。
本机使用外置AC 90V-270V，50/60HZ全球通用高品质电源供电。机内使用钰龙音频开发的高性能，无噪声高频开关电源转换成多路稳压电源输出供给DAC+耳机放大器部分独立使用。
整体电路全部使用知名品牌高精度元器件，并自行QC后再生产，元件的选用在调试达到较高性能指标的的效果后，再经过钰龙音频资深调音工程师进行调校，并最终确认定型，
所有机器均通过24小时的强化实验，经过dScope Series III digital audio analyzer 进行检测，这些环节能保证本机从生产到音效调整到技术指标，以及机器的稳定性都能达到优良的一致品质。
本机的声音风格：清澈透明，细腻柔和，全频均恒自然耐听，使用高频率电源供电更能保证耳机输出部分功率充足，噪声小，瞬态响应良好
本机功能及操作：
接通电源，，接好输入信号，开启面板电源开关，面板POWER灯亮起，播放音乐，面板上的DIGI指示灯亮起，本机即进入工作状态，
USB：用于联接电脑，可直接在电脑上播放音乐，本机输出驱动耳机或音箱
COAX：S/PDIF标准同轴输入端，可用于联接带有此标准接口的音频设备
OPT：光纤输入端口，可以联接带有光纤输出的数字音频播放设备
USB，COAX，OPT三个端口在接入信号后自动进入工作状态，
注意：USB，COAX，OPT三个端口不可以同时输入信号，只有单个输入才能发挥性能
PHONE：用于联接耳机，
-Volume+：调节音量
R OUT L本机DAC线路输出，可联接放大器驱动耳机或音箱。
注意：在联接耳机时R OUT L输出端口不可同时联接其它设备
本机可以支持到192K采样的,实际听感上在44.1K时效果最佳,如果使用声卡同轴或光纤接入,建议采样率设置在44.1K
使用本机电源时请注意相位,如果对相位不清楚,请把电源插对换一下方向插进电源座对比试听,使用效果好的那个就是了.
如果只用USB接口,推荐购买贝尔金黄金版USB线(扁转方头)或更高档次的USB线,素质比原配USB线更有提高
● 附，本机技术指标：
●标准输入接口，SPDIF，同轴， USB
●输入频率：32-192KHZ/16/24BIT自动识别。
●信噪比:>-110db
●动态范围：105db
●声道分离度：-100DB
●失真度：1KHZ%0.0008以下
●失真度加噪声:1KHZ%0.002
●额定输出:2VPP
●频率响应:20-20KHz-0.2db
●整机功率;20W
●耳机输出功率：平均值32R/1W，300R120mw,峰值：600R/400mw300R/600mW
●机器体积：160*110*45mm
●电源输入，80-240VAC/50-60HZ
●重量：0.68Kg(实际运输重量以外包装结构为准)
本机包装箱内配件:高品质外置电源,USB线一条,使用说明书一本,
Crystal DA is a small integrated personal audio system with an USB input, a S/PDIF input, an Optic Fiber input, an independent DA conversion, a Line output and a headphone power amplify output.
Crystal DA has a small size,only 160*110*45mm.It uses the refined aluminum shell and it is exquisite in styling.To your surprised, it weighs only 0.68Kg.It is inconvenient for you to use a large desktop audio device to enjoy the music in some places such as offices, dormitories,etc.It is also inconvenient for you when you are away on business.Crytal DA can help you to play music,and it will become your best partner!
Crystal DA uses the CS4398 to complete the DA conversion.The CS4398 with little distortion is produced by the Cirrus Logic Inc. The gain and noise figure of the CS4398 are about 120dB and -107 dB respectively.
The Digital Input uses the CS8416 of Cirrus Logic which can recognize and sorpport the frequency from 32KHz to 192KHz automaticly.
The USB uses PCM2704 of BB.The PCM2704 can convert the USB to the SPDIF as the input of the CS8416.
The part of analog circuits uses a dedicated audio OPAMP OPA2134 of BB, 5% high-precision SMD capacitor and 0.5% SMD resistor.
The part of headphone amplifier uses the OPA2134 to drive the A-type buffer current output stage with the constant current source, and uses the low power tube whose output current can achieve 800MA.This will not only ensure enough drive capability but also get the fine voice.
Crystal DA uses the universal high-quality external power supply which is AC 90V-270V, 50/60HZ.In the Crytal DA,high frequency switching power supply with high performance and without noise, which is developed by YuLong Audio,is transformed to multi-channel voltage-stabilized source to supply the DAC and the part of the headphone amplifier independently.
The whole circuit uses the high-precision components with famous brands,QC is necessary before production,each of the components must be tested to achieve high performance index and adjusted by YuLong senior audio engineers before use.
All the machines must be passed through the 24-hour reinforcing experiment and examined by the dScope Series III digital audio analyzer critically.From production to voice adjusting to technical indicators and the stability of the machine,these procedures can guarantee the consistency of high quality.
The style of voice: clear and bright,elaborate and soft,natural and endurable,the whole frequency is equivalent, high frequency power supply can ensure enough power of the headphone output,low noise,fine transient response.(Note:the Crytal DA has high gain and power,it can drive a variety of big headphones,but it is not suitable for the use of in-ear headphones).
Functions and Operations:
Connect the power line to the power supply,select the input signal,turn on the power switch on the panel and the POWER light is on,music begin to play and the DIGI indicator light is on,the Crytal DA is put in woking order.
USB:used to connect the PC,you can play music in the PC directly,the output can drive headphones or speakers.
COAX:S/PDIF standard coaxial input interface,it is used to connect the audio devices with this standard interface.
OPT: optical fiber input interface, it is used to connect the digital audio devices which can provide the optical fiber output.
After connecting any of the interfaces among the USB, COAX, OPT,the machine will be put in working order automatically.
warning: in order to get high performance,only a single input is valid,you shouldn't connect the USB, COAX and OPT at the same time.
PHONE: used to connect the headphone.
-Volume +: used to adjust the volume.
R OUT L: DAC line output,it is used to connect the amplifier to drive headphones or speakers.
warning: the R OUT L output interface mustn't be connected to the other devices when the headphone is connected.
Technical Specification:
●Standard input connector: SPDIF, Coaxial, USB,
●Input Frequency: 32-192KHz/16/24Bit auto-recognized.
●SNR: >-110Db.
●Dynamic Range: 105Db.
●Crosstalk:-100db
●THD+N: 1KHz%0.002.
●Frequency response: 20-20KHz-0.2Db.
●DAC power:<20W.
●Headphone’s out power: RMS：32R/1W，300R120mw, Peak：600R/400mw300R/600mW
●Dimensions: 160*110*45mm
●Weight: 0.68Kg.+ Packing:1.2Kg
●power AC in: 80-240VAC/50-60HZ |
|
粤公网安备 44030602000598号 耳机大家坛、www.erji.net、网站LOGO图形均为注册商标 
IP卡
狗仔卡
发表于 2009-9-3 15:22
收藏
分享
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
楼主
