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钰龙韵团队以多年沉淀的调音艺术、追求创新的精神、精心设计、反复的调整,研发出在功能技术上超前、声音极具模拟味、超值多功能一体机ADA1(Amplifier Digital-to-Analog)。
ADA1全部接口支持DSD、双AK4490高性能解码、全分立件JFET输入甲类直流耳机放大器、选配WiFi、A4大小体积、齐全的接口,丰富的功能和令人舒适的模拟音乐味一定会成为您欣赏音乐的最佳器材。
功能特点:
● SPDIF/Optical/AES支持 DoP64、DoP128
● SPDIF/Optical/AES支持PCM 384KHz 24bit
● USB支持DoP64、DoP128、Native DSD64、128、256 , PCM 16-32bit , 32-384KHz
● WiFi接口支持PCM 384KHz、DSD64、128,苹果、安卓能直接推送,以及联网播放网络资源
● Ultra-Low jitter时钟锁相技术(小于50PS)
● 双AK4490 具有模拟音乐味调音的解码
● 可调整的数字滤波器
● JFET高阻抗输入、分立元件甲类直流全耳机放大器
● 80级数字音量调整
● 线路输出低至20欧阻抗、可控音量、直接驱动有源音箱或平衡耳机
● 可选配平衡耳机驱动转接线(当平衡耳放使用)
● WiFi 和耳机放大器都可以关闭断电,使其工作在纯解码模式
● 触屏控制、操作自动记忆、20秒无动作自动降低亮度,锁止屏幕防止误操作
● 铝合金外壳、全铝机脚、坚固实用
● 110-240V通用电压
ADA1数字信号输入经过缓冲整形后,由Saviaudio SA8804进行解调,使用SA8804的超低抖动的时钟同步参考、解调后由两片AK4490进行左右声道独立解码,线路输出使用OPA1632,输出阻抗低驱动力强,可直接推动耳机。电源采用Plitron变压器,数字电源经过预稳压之后分别使用ADP124精密低噪声LDO供给各个电路单元,AK4490的模拟基准电压使用噪声只有1.0 礦 rms ADM 7150供电,精密的供电方案和严谨的设计使整机具有极高的信噪比和低失真度。
USB采用Saviaudio SA9227高水准的电路设计,配合定制的低相位噪声时钟做采样基准,USB接口达到了非常高的素质。
耳放部分使用全分立元件电路,JFET场效应管高阻抗输入,MJD243、253大电流低阻抗输出,全直流甲类放大,精心调整每一级工作在最佳的性能和声音听感的状态,驱动力强,声音自然。
WiFi使用Saviaudio 的SA9800模块,基于苹果或者安卓系统的手机/平板上,既可直接播放储藏在手机/平板上的音乐,也可以通过设置媒体服务器播放NAS以及电脑上的音乐,均支持最高32Bit/384KHz的高品质PCM格式以及DSD。WiFi部分完全独立工作,独立供电,切换到其它通道时,WiFi断开供电,没有无线射频信号对音频的影响。
技术指标:
● USB支持DoP64、DoP128、Native DSD64、128、256 , PCM 16-32bit , 32-384KHZ
● 同轴、光纤、AES输入:DoP64 、DoP128、PCM 16-24Bit,44.1-384KHZ
● 信噪比: -120dB
● 动态范围:119dB
● 失真度: 0.00045%
● 频率响应:20-30KHz-0.15dB
● 左右声道串音-120dB
● 平衡输出电平:4.2V
● 耳放输出功率:600欧:90mW 300欧:180mW 150欧:360mW 32欧:1.68W
● 功耗: <30W
● 尺寸: 248*210*60mm
● 净重:2.8kg
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All of us from YuLong proudly present the ADA1 (Amplifier Digital-to-analogue) with breaking through Dop 128 and PCM 384KHz support over SPDIF, very analogue sounding, and high performance-to-cost ratio all in one unit backed by our years of experience in sound refinement, design and creativity.
We believe ADA1 will become your favorite music playback device with these advantages: Powered by dual high performance AK4490 DAC chips in mono mode; DSD decoding supported by all inputs; JFET input, DC-coupled, fully discrete class-A headphone amplifier; optional WiFi adaptor; A4 sized and flexible connections.
Key Features of ADA1
● DoP64 and DoP128 support over SPDIF/Optical/AES.
● PCM 384KHz 24bit over SPDIF/Optical/AES.
● DoP64, DoP128, Native DSD64/128/256 and PCM 16-32bit, 32-384KHZ over USB.
● Up to PCM384 and DSD 64/128 over WiFi. Direct push with iOS and Android.
● Ultra-Low jitter PLL clock (<50PS).
● Dual AK4490 analogue sounding DAC.
● Adjustable digital filter .
● Digital attenuator in 80 steps.
● High impedance JFET input, DC-coupled, fully discrete class-A headphone amplifier.
● Balanced output with 20Ohm and attenuator can drive active speakers and balanced headphones.
● Optional balanced headphone adaptor.
● WiFi and headphone module can be shut off for a pure DAC mode.
● Touch screen, auto-save, auto-dim and intuitive controls.
● Durable aluminum enclosure and feet.
● Versatile global voltage 110-240V by user accessible switch.
The input digital signal is buffered and shaped and then demodulated by Saviaudio SA8804 with its ultra low jitter reference clock, and the decoded by two AK4490s in mono mode for left and right channels respectively. Output buffer utilizes OPA1632 which impedance is low enough to drive headphones directly.
Precisely designed power supply and layout ensured very high S/N ratio and distortion specifications. A Plitron transformer supplies the power needed for different sections together with primary regulators followed by ADP124 precision low Low-dropout regulators (LDO). ADM7150 precision LDOs with only 1.0 μV rms noise level were used for the analogue reference voltage (V_Ref) for AK4490.
Ultimate USB performance was achieved by carefully designed circuits surrounding Saviaudio SA9227 including a customized ultra low phase noise clock.
Headphone amplifier is fully DC-coupled and fully discrete, JFET input class-A design with low impedance high current output stage powered by MJD243/253 transistors. Carefully matched and biased for most natural and musical listening experience.
Optional WiFi module is powered by Saviaudio SA9800 which supports playing domestic music files on iOS or Android devices, or DLNA streams over computer or NAS. All these playbacks support DSD format and PCM up to 32Bit/384KHz.Optional WiFi module is powered by Saviaudio SA9800 which supports playing domestic music files on iOS or Android devices, or DLNA streams over computer or NAS. All these playbacks support DSD format and PCM up to 32Bit/384KHz.
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