Key Operation:
M (short press) --- mode switching
▲ (short press) --- increase brightness
▼ (short press) --- decrease brightness
(recommended brightness value 2-4)

M (keep pressing) + ▲ (short press) --- increase spectrum speed
M (keep pressing) + ▼ (short press) --- decrease spectrum speed
(recommended speed 3-4)

▲ (long press) --- switch between LIN (line input) and MIC (microphone input)
▼ (long press) --- switch between L (low gain) and H (high gain) (the best is L by default, can choose H for car spectrum MIC input)

NOTE: the setting values need to maintain 30 seconds before they can be automatically saved.


Connection:
Audio terminal input adopts 3.5mm male headphones, connect it to computer headphone output interface via the audio branch, the other end of the branch connects external audio equipment. Please check whether the audio cable or branch has good contact if the audio has noise or the spectrum has background noise under mute and MIC off mode when using.


Potentiometer Function:
Input adjustment potentiometer: for adjusting the input signal, for example, the input signal can be attenuated if it is too strong, or adjust this potentiometer to shield some equipment which have strong background noise. Spectrum display amplitude potentiometer: for adjusting the maximum display amplitude after AGC (Automatic Gain) process. After setting, the automatic gain will take this setting value as the maximum amplitude to adjust automatically.(turning to the end can turn off AGC function if you don't need it)


Package Includes:
1× AS1424 Music Spectrum
1× USB Cable
1× 3.5mm Male to 2*Female Plug