Sabaj A20h User manual

使用说明书
深圳市大号科技有限公司
A20h

安全注意事项
请将本音响系统安装在通风良好、阴凉、干燥、干净的位置，远离直射阳光热源
、振 动 、灰 尘 、 潮湿或寒冷。
只能使用本机指定的电压。使用高于指定数值的电压很危险，而且可能导致火
灾，损坏本机或造成人身伤害。对于使用高于指定电压造成的任何损害，深圳
市大号科技有限公司将不负任何责任。
不要试图自行改造或修理本机。如果需要任何服务，请就近与有资格的深圳市
大号科技有限公司维修人员联系。不管有任何理由，都没有打开机壳的必要。
如果打算长时间不使用本机（比如度假时），请从墙壁交流电源插座上断开电
源线的连接。
A20h
保修条款
一、服务期限
深圳市大号科技有限公司承诺产品的良好品质，产品自售出之后7天内正常
使用情况下出现故障，客户可以选择退货或者保修（不影响二次销售才可退
货）。正常使用一年内出现故障可以免费保修。
二、购买日期以销售商开出的购机发票或收据日期为准，多购可以交易截图为准。
三、有以下情况都不能享受“三包”服务
1.一切人为因素损坏，包括非正常工作环境下使用或不按照说明书使用。
2.用户私自拆机、改装、维修。
3.使用非指定或许可的配件造成损坏的。
4.机身的QC或保修贴损毁。
5.不能出示有效购机凭证。
6.不属于本公司产品。
四、保修方式为送修
此条款只适于中国大陆，其它地区请参考当地销售代理商的规定和国家法规。
本说明书内容如有更新,恕不另行通知.若您使用的产品功能与说明书不一致
时,请以产品为准!

产品特点
A20h
超低失真精密线性反馈电路(PLFC), 失真度低至0.00008%!
超低噪声电源设计, 使输出噪声低到1.3uV(APX555B实测值, 不是等效值!)
超紧凑设计，非常适合桌面耳机系统 ;
高精度低温漂电阻,性能不受温度影响 ;
高品质继电器和无冲击声设计 ;
高精度低噪声256级继电器音量控制 ;
*实际使用时为了音量更加线性, 屏蔽了多余的级数。
16欧姆输出功率达4W，32欧时达到2W ;
20Hz至500kHz频率响应 ;
高中低三档可切换增益控制 ;
耳机放大器具有DC，过压,过热保护等全面保护 ;
使用高效低噪声的电源系统 。

技术参数
A20h
输入方式: 平衡 x1 ；非平衡 x1
输出方式: 平衡耳机x1 ；4.4mm平衡耳机x1 ；非平衡耳机x1
输出功率:
4W x 2 (16 Ω)
2W x 2 (32 Ω)
1W x 2 (300 Ω)
500mW x 2 (600 Ω)
信噪比:
137dB
剩余噪音: 1.3uV
THD+N: -121dB, 0.00008% (1kHz , 32 Ω)
THD+N: -120dB, 0.0001% (20-20kHz , 32 Ω, -1dB)
THD: <-125dB,0.00006%
输入阻抗: 47kΩ
输出阻抗: 接近 0 Ω
频率响应: 20Hz - 500kHz(-3dB)
增益：
其他:
电源电压: DC15V
能量功耗(EN60065): <30 W
待机功率: <0.1W
尺寸: 100×62×195mm(WxHxD)
重量: 0.75kg
增益控制表
UNBAL IN/BAL OUT BAL IN/BAL OUT UNBAL IN/UNBAL OUT BAL IN/UNBAL OUT
0dB@GAIN=L
6dB@GAIN=M
15dB@GAIN=H
0dB@GAIN=L
6dB@GAIN=M
15dB@GAIN=H
0dB@GAIN=L
6dB@GAIN=M
9dB@GAIN=H
0dB@GAIN=L
6dB@GAIN=M
9dB@GAIN=H

关于遥控器
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。
遥控器的使用
注 意
1. 遥控器请使用2节7号(AAA)电池
2. 第一次操作
A20h 时 ，先 按 B 键
开关机
输入切换
增益控制
静音
音量加/向上
音量减/向下
无功能
切换至控制 A20h
A20h
进入菜单/确认
功能菜单切换
返回

接口介绍
A20h
旋钮
红外接收窗
显示屏
平衡输入
平衡耳机插座
6.35mm耳机插座
4.4mm耳机插座
RCA输入
电源输入（DC 15V）
5
6
7
1
2
3
4
H IGH RE SOL UT IO N H EA DPHO NE A MP LIF IE R A20h
15V
I NPUT LR
LR
OUTPUT
4
123
765 98
8
9
注:
1.连接耳机前请调小音量, 以免音量过大损坏耳机;
2.根据健康专家的建议,请勿长时间聆听耳机以免影响听力。

功能菜单介绍
A20h
输入选择
In1（XLR平衡线路输入）
In2（RCA非平衡线路输入）
增益控制
（低增益）
（高增益 1 ）
（高增益 2 ）
3种亮度
（亮度 1）
（亮度 2 ）
（亮度 3 ）

Shenzhen DaHao Technology Co.,Ltd.
USER MANUAL
A20h

Install this unit in a well ventilated, cool, dry, clean place-away from direct sunlight, heat
sources, vibration, dust, moisture, or cold..
Do not attempt to modify or fix this unit. Contact qualified Sabaj service personnel
when any service is needed. The cabinet should never be opened for any reason.
When not planning to use this unit for long periods of time ( i. e. when going
onvacation), disconnect the power cable from the AC wall outlet.
When not planning to use this unit for long periods of time (i.e. when going on vacation),
disconnect the power cable from the AC wall outlet.
A20h
Safety Notes
Warranty Terms
1. The term of service
Shenzhen Sabaj technology Co.,LTD promise good quality products. If product is
defective unit by normal use with in 7daysafterpurchasing. The customer can choose to
return or repair warranty( does not affect the secondary sales afterthey can return).
Faulty for free with in one year warranty normal use.
2. Date of purchase is in accordance with invoice date or receipt date issued by seller,
online shopping can cut trade shots.
3. Following situation can not enjoy“Three Guarantees service”
a. All damages by human factors, including use it under nonrmal workingenvironment
the and not following manual instruction.
b. User privately disassemble, modification, maintenance.
c. Use non-designated or approved accessories cause damage.
d. QC or warranty stickers damage on cabinet.
e. Can not provide a valid purchasing prove.
f. Not belong to Sabaj product.
4. How to warranty
This term is only suitable for china mainland, other regionplease refer to the policy of the
local sales agents and national regulations.
The contents of this manual are updated without prior notice. If the function of the product
you are using is inconsistent with the instructions,the function of the product shall prevail!

A20h
Features
Ultra-low distortion precision linear feedback circuit (PLFC), distortion as
low as 0.00008%!
Ultra-low noise power supply design, so that the output noise is as low as
1.3uV (APX555B measured value, not equivalent)；
Ultra-compact design, suitable for desktop headphone system；
High precision low temperature drift resistance, its performance is not
affected by temperature；
High quality relays and popless sound design；
High precision low noise 256 level relay volume control；
*In order to make the volume more linear in actual use, the extra levels are
shielded.
4 Watts into 16 Ohm,2 Watts into 32 Ohm；
20 Hz to 500 kHz Frequency Response；
3 gears of gain control, for IEM or headphones；
High, medium and low three gears can switch gain control；
The headphone amplifier has DC,comprehensive protection such as
overvoltage and thermal protection；
Use high-efficiency and ultra-low noise power system.

Specifications
A20h
Inputs: Balanced x1, Unbalanced x1
Outputs: Balanced x2, Unbalanced x1
Output Power:
4W x 2 (16 Ω)
2W x 2 (32 Ω)
1W x 2 (300 Ω)
500mW x 2 (600 Ω)
SNR: 137dB
Output Noise: 1.3uV
THD+N: -121dB, 0.00008% (1kHz, 32 Ω)
THD+N: -120dB, 0.0001% (20-20kHz , 32 Ω, -1dB)
THD: <-125dB,0.00006%
Input Impedance: 47kΩ
Output Impedance: Near 0 Ω
Frequency Response: 20Hz - 500kHz(-3dB)
Gain:
General Section:
Power supply voltage/: DC15V
Power consumption(EN60065): <30 W
Power consumption in standby mode: <0.1W
Size: 100×62×195mm(WxHxD)
Weight: 0.75kg
Gain control
UNBAL IN/BAL OUT BAL IN/BAL OUT UNBAL IN/UNBAL OUT BAL IN/UNBAL OUT
0dB@GAIN=L
6dB@GAIN=M
15dB@GAIN=H
0dB@GAIN=L
6dB@GAIN=M
15dB@GAIN=H
0dB@GAIN=L
6dB@GAIN=M
9dB@GAIN=H
0dB@GAIN=L
6dB@GAIN=M
9dB@GAIN=H

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.
Remote Control
Operating the remote control
Note
1. This remote controller use 2 x R03/AAA battaries.
2. When you first operate A20h, press the B key first.
Power ON/OFF
Gain control
Mute
Volume -
/down
Switch to control A20h
Invalid
A20h
Volume + /down
Next level menu
Input select
Menu
/ OK
Return

A20h
Parts name
H IGH RE SOL UT IO N H EA DPHO NE A MP LIF IE R A20h
15V
I NPUT LR
LR
OUTPUT
4
123
765 98
Knob
Remote window
Display
XLR input
Balanced headphone jack
6.35mm headphone jack
4.4mm headphone jack
RCA input
Power Supply(DC15V)
5
6
7
1
2
3
4
8
9
Note:
Please turn down the volume before connecting the headphones to avoid
excessive volume damage to the headset.
According to the advice of health experts, do not listen to the headphones
for a long time so as not affect your hearing.

Setting Introduction
A20h
Gain control
（Low gain）
（High gain 1）
（High gain 2）
Brightness
（Brightness 1）
（Brightness 2）
（Brightness 3）
Input
In1（Balanced line in）
In2（Unbalanced line in）