Loxjie D20 User manual

使用说明书

简介
D20
特点
D20是Loxjie(乐士杰)品牌推出的首款桌面式线性电源解码耳放一体机！采
用了AKM公司的旗舰音频解码芯片AK4497,超高信噪比，超低失真度支持硬解
DSD512 ! 精心的性能优化和声音调校，使D20成为完美的桌面耳机搭档！
AKM公司的旗舰音频解码芯片AK4497,超高信噪比，超低失真度，支持硬解
DSD。
第二代XMOS方案，PCM最高支持32bit/768kHz，DSD最高支持DSD512。
内置多种PCM格式的数字滤波器。
分立元件AB类大功率电流驱动耳放电路设计。
医疗级密封环形变压器加精心设计的电源电路，使用多组低噪声LDO供电。
大量使用发烧音频元件。
全铝CNC加工外壳，做工十分精细壳。
人性化的操作，并具有开关机记忆功能。
精心调校的性能和声音。
超低相位噪声时钟系统。

多功能旋钮
遥控接收窗
显示屏
6.35mm耳机输出
电源插座
1
2
3
4
6
7
8
9
5
部件介绍
D20
USB输入
光纤输入
同轴输入
线路输出
1
2
43
5 6 7 8 9
H I-RES D AC HEA DPHO NE A M PLI FIER
INPUT

关于遥控器
D20
注意：
如果遥控器距离本机很近时操作仍无效，请用新电池更换。
如果要长时间不使用遥控器，请取出遥控器的电池。
按照电池处置的地方性法规处置废旧电池。
遥控器请使用2节7号(AAA)电池。
遥控器使用距离5-8米。
开关机
静音
音量 +
音量 -
菜单
功能切换
输出切换
输入源切换
显示亮度调节
无功能
无功能
无功能
无功能
无功能
无功能

菜单 ：
页面名称，用于设置
当前页，总共5页
设置状态
功能及操作说明
D20
多功能旋钮：
旋钮长按开/关机，短按菜单
左右旋转为音量调节/切换菜单功能
主界面：
输入方式显示
输出方式显示
音量显示
采样率显示
USB LINE 20
44.1 kHz
3
2
4
11
2
3
5
6
7
4
OFF
Input
1/5
2 Opcal
5 6
7
OFF
Input
1/5
2 Opcal
输入模式：
USB
Optical (光纤输入)
Coaxial (同轴输入)
OFF
Output
2/5
1 Line out
输出模式：
Line out (线路输出,支持音量控制)
HP out (6.35mm耳机输出)
注：当前用静音时此处显示MUTING;
当无信号输入时此处显示No signal

亮度调节：
Auto turn-off
(5秒后自动息屏，任何操作点亮)
Brightness 1 (低亮度)
Brightness 2 (中亮度)
Brightness 3 (高亮度)
Brightness 4 (超高亮度)
音色菜单：
Default
Current MAX
Current MID
Current MIN
数字滤波模式(只对PCM信号起作用)：
Sharp r-off (陡峭滚降)
Slow r-off (缓慢滚降)
SD Sharp (短延时陡峭滚降)
SD Slow (短延时缓慢滚降)
Super Slow (超低延时缓慢滚降)
Short delay (短延时)
功能及操作说明
D20
OFF
Filter
3/5
1 Sharp r-off
OFF
Sound
4/5
1 Default
OFF
Dimmer
5/5
Auto turn-off

D20
输入方式 ...............................................................................USB、光纤、同轴
输出方式 ...........................................................................6.35mm耳机、线路
THD+N:
线路输出 ....................................................................................0.0004%
耳放输出 ......................................................................................0.002%
动态范围 ...............................................................................................122dB
信噪比:
线路输出 ........................................................................................112dB
耳放输出.........................................................................................105dB
USB传输方式 .....................................................................................异步传输
USB兼容性 .................................................................Windows 7 / 8 / 8.1 / 10
Mac OSX10.6以上、Linux
位深：
USB .......................................................................................1bit ~ 32bit
光纤/同轴 ............................................................................16bit ~ 24bit
采样率：
USB .........................................................................PCM: 44.1 ~ 768kHz
DSD: DSD64 ~ DSD512
光纤、同轴 .................................................................44.1kHz ~ 192kHz
耳放输出功率 ......................................................................................220mW
消耗功率 ....................................................................................................5W
待机功率 ..............................................................................................＜0.3W
体积 ........................................................................................148x45x186 (WxHxD)
重量................................................................................................................0.9kg
技术参数

USER MANUAL

The D20 is the first desktop digital to analog converter and headphone amplifier
from the Loxjie brand! Adopting AKM's flagship audio DAC chip AK4497,
ultra-high signal-to-noise ratio, ultra-low distortion, and fine-tuned circuits and
sound performance make it perfect for desktop audiophile application!
Introduction
D20
Features
AKM's flagship DAC chip AK4497, ultra-high signal-to-noise ratio, ultra-low
distortion and support DSD.
The second-generation XMOS solution, PCM supports up to 32bit/768kHz,
and DSD supports up to DSD512.
Low noise high precision clock system.
Discrete component large current headphone drive circuit.
Hospital grade toroidal transformer with carefully designed power circuit.
Use a lot of audio grade components.
Full aluminum CNC milling chassis.
Humanized operation with OLED display.

Knob
Remote window
Display
6.35mm headphone jack
Power inlet
1
2
3
4
6
7
8
9
5
Parts Names
D20
USB input
Optical input
Coaxial input
Audio Out
1
2
43
5 6 7 8 9
H I-RES D AC HEA DPHO NE A M PLI FIER
INPUT

Remote control
D20
Install 2 x AAA batteries as instructions.
When using the remote control, point it toward the remote con-trol signal receiver on
the main unit from a distance of 5 m (16 ft) or less. Do not place obstructions
between the main unit and the remote control.
The remote control might not work if the remote control signal receiver on the unit is
exposed to direct sunlight or bright light. If this occurs, try moving the unit.
Beware that use of this remote control could cause the unin-tentional operation of
other devices that can be controlled by infra.
This remote controller use 2 x R03/AAA battaries.
Note:
Power ON/OFF
Mute
Volume +
Volume -
Menu
Switch function
Output switch
Input switch
Display dimmer
No function
No function
No function
No function

Function and operation instructions
D20
Menu :
Current page name
Position of total pages
Content for current page
Knob :
Hold to POWER ON/OFF the unit, Press to switch Menus.
Rotate to adjust the Volume or Menu items.
Main Display:
Input Source
Output Mode
Current volume level
Sampling rate
USB LINE 20
44.1 kHz
3
2
4
11
2
3
5
6
7
4
OFF
Input
1/5
2 Opcal
5 6
7
OFF
Input
1/5
2 Opcal
Input:
USB
Optical
Coaxial
Output:
Line out (Display as Pre)
HP out (Display as headphone icon)
OFF
Output
2/5
1 Line out
Note: Display "NO SIGNAL" when for no inputs

Function and operation instructions
D20
Dimmer:
Auto turn-off
(In this mode display will turn off
in 5 senconds and will turn on
by any operations )
Brightness 1
Brightness 2
Brightness 3
Brightness 4
Sound(Sound Mode):
Default
Current MAX
Current MID
Current MIN
PCM Filter:
Sharp r-off
Slow r-off
SD Sharp
SD Slow
Super Slow
Short delay
OFF
Filter
3/5
1 Sharp r-off
OFF
Sound
4/5
1 Default
OFF
Dimmer
5/5
Auto turn-off

D20
Input ................................................................ USB / Optical / Coaxial
Output
........................................................ Line / 6.35mm Headphone
THD+N:
Line ................................................................................0.0004%
Headphones .....................................................................0.002%
Dynamic range ..........................................................................122dB
SNR :
Line ...................................................................................112dB
Headphones ........................................................................105dB
USB transmission ........................................................ Asynchronization
USB compa bility
............................................Windows 7 / 8 / 8.1 / 10
Mac OSX10.6以上、Linux
Bit depth ：
USB ...........................................................................1bit ~ 32bit
Optical/coaxial ..........................................................1bit ~ 24bit
Sampling rate ：
USB .............................................................PCM: 44.1 ~ 768kHz
DSD: DSD64 ~ DSD512
Optical/coaxial ..............................................44.1kHz ~ 192kHz
Headphone amplifier power .....................................................220mW
Power Consumption .......................................................................5W
Standby power .........................................................................＜0.3W
Size............................................................................148x45x186 (WxHxD)
Weight
.............................................................................................. 0.9kg
Specification