Wisdom in mind,   enthusiasm at heart.

Compass 2 (2014 )(DSD / DXD )
Discrete  DAC+ Head amp / Preamp / Line In
DSD , DXD support from USB
32bit / 384K Sabre ES9018
32bit / 384K Asynchronous Transfer USB-32 Chip
It can exchange the DA module either ES9018, WM8741 & PCM5102

The rule of the power ON /  OFF:
Power On :
     Source power ON ---->    Compass 2 power ON ----> Amp power ON
Power Off:
    Amp power OFF ---->  Compass 2 power OFF   ---> Source power OFF .

Setting the Compass 2 SPDIF input through DIR module or feed to ES9018 direct :
        The Compass 2 have built in DIR module (Users can choice either DIR9001 and WM8805 install while place the order, in default install WM8805 and SPDIF feed to ES9018 direct ) .  
        Users  can choice the SPDIF signal feed to either ES9018 direct and through DIR module with 3 jumpers setting , which is simply for users choice different sound flavors .
        If match with low end PC sound card have large jitter cause  the sound interrupt  by feed to ES9018 direct, users can setting through DIR module for help .  In default SPDIF feed to ES9018 direct
        The setting guide:
        1, Pull off the power cable at first .
        2, Take off the top cover of the chassis.
        3, Setting the jumpers .
        4, Get back the top cover and push into the power cable tight .

Replace the DA modules :
        The Compass 2 can replace the DA modules between ES9018, dual WM8741 and PCM5102  for different sound flavors.
        The setting guide:
        1, Pull off the power cable at first .
        2, Take off the top cover of the chassis.
        3, Replace the DA module and setting the jumpers .
        4, Get back the top cover and push into the power cable tight .
　

      Install the ES9018 module                Install the dual WM8741 or PCM5102 module

Exchange the OPA for different sound flavors:
        1, Turn off the Compass 2 and pull off the power cable .
        2, Take off the top chassis.
        3, Take off the original OPA chip careful .
        4, Push into the OPA proper, connect the ground wire as the photo on right side.
       ( The OPA only effect the sound flavor of line in . The built in DAC have not OPA in the signal channels . If users want to change the sound flavors , can exchange the DA modules . )

Setting warmer sound for Line in:
        1, Turn off the Compass 2 and pull off the power cable .
        2, Take off the top chassis.
        3, Push into two jumpers .

Setting the Compass 2 had I2S input:
        1, Turn off the Compass 2 and pull off the power cable .
        2, Take off the top chassis.
        3, Take off the 3 screws on the USB module, pull off the USB module careful.
        4, Push into the I2S kit to the sockets.

I2S define:
( 3.3V level ,  we can't guarantee the I2S input can cooperate with all I2S output devices.
( The I2S transmit want to take care the transmit cable  )
Pin 1 : SDATA
Pin 3 : LRCK
Pin 5 : SCLK
Pin 7 : MCLK
Pin 2,4,6,8 GND

How to set the Compass 2 Line output as variable or fixed level ?
   The Compass 2 has one group  line output, In default its output level setting is at variable model . If users only want the fixed model , change the jumper as below picture .
      (Be care, if the Compass 2 line output connect to a non volume control amp or active speaker ,  setting to variable output model only . The headphone output always have volume control. )

The Compass 2 Functions:
     Front plate:
     HP/DAC switch:        Select output between headphone and preamp output ( Variable level) or DAC output ( Fixed level).
     Gain switch:             Select gain between low gain (+0DB) and high gain (+12DB).
     Volume knob:           Control the volume level of the headphone and variable preamp output.
     Line In:                    Select working for built in DAC and Line in either .
     Selector:                  Select source between USB, coaxial and optical.   

     Rear:
     USB socket:            For USB input.
     Opt socket:              For optical input.
     Coax socket:           For coaxial input.
     Line In sockets:       For analog signal input.
     Line Out sockets:    For headphone and preamp output ( Variable level) or DAC output ( Fixed level).