(1) New feature - Volume Control Buttons (Up and Down)
Total 128 digital segments with analog based gain control.
Just press the Up button to volume up. Down button to volume down.
(2) New feature - Line Out mode
Press the UP button all the way up. When you see the original signal mode LED change to Light Green.
GO2Pro and GO2A is entering Line Out mode which totally by-pass the volume control and designed to
connect directly to Headphone Amp or Pre-amp. Max Vrms on Singled-ended: 3.2V rms
(3) New feature - Smart Gain
GO2A and GO2Pro will choose the proper analog GAIN settings according to the current volume setting by button.
When you approach the -2dBFS of LOW-GAIN and volume up. Firmware will automatic change GAIN setting to MID-GAIN.
When you approach the -2dBFS of MID-GAIN and volume up. Firmware will automatic change GAIN setting to HIGH-GAIN.
If will give you the best synergy of digital volume control and analog gain setting.
(4) Updated feature - Please press TWO volume buttons at the same time to change digital mode/digital filter on the fly
TCM (Green) -> SSM (Red) -> FTM/FRM (Blue)
(5) Updated feature — Digital Mode 2.0
By developing the new digital filter algorithm for our DaVinci MK2’s DSD decoding engine, we use the similar method to
re-write the digital mode firmware inside GO2PRo and GO2A. Especially in FTM/FRM, we achieve the smoother sound on high,
even better sound stage. TCM has better FR on DSD playback.
(Remark: DaVinci’s PCM engine doesn’t use digital filter. Only on Dual engine 2.0’s DSD decoding side we have digital filter)