LESS BX1 Single End HEADPHONE AMP

LESS BX1 Single End HEADPHONE AMP.
Portable full discrete single end amplifier
Introduce：
New generation DAC chips develop is very fast,eg :ESS9038，AK4499，R2R , most popular use in portable device，lets take the DAP to highest level，meet the Hi-End user requirement.
Less BX1 single end amplifier cooperate powerful portable device，give fully play to it，design base on less distortion，more dynamic and powerful control.
BX1 line amp frist stage is using mirror high current circuit ，fully discrete components，zero negative feedback circuit design，prefect match  twins transter，class A fully operation。Simple circuit，direct sound passthrough，very low distortion，details and airly.
BX1output stage using Marantz SA3 Mirror Buffer amplifier，2SB139/140 is the power output transter ，they workong on class A operation too.
BX1 full discrete single end amplifier
Specification
Total Harmonic            : 0.0002%(1Khz)
Signal to noise Ratio  : >115DB（Minimum）;>98DB(Maximum)
Output Power              : 165mW/600ohm；330mW/300ohm 
                                      ；1000mW/100ohm；3300mW/32ohm
Fequence response   : 10Hz-25KHz(-0.5DB)
Gain                             ：15dB （HIGH）；10dB（LOW）
Chargeing voltage      : DC IN 5V (TYPE-C)
Battery                          : 3.7V Li-on
Battery capacity          : 5000mAh
Dimension                   ：W85XL125XH22mm
Net Weight                   : 240g
Color                            ： Dark green
Idle times                    ：Around 8hrs
（Full packing included：BX1*1、TYPE-C cable*1，3.5mm TO 3.5mm jumper*1，BX1 User menu*1，Warranty card*1。）