default values of the secret E370 audio menu by inputing *#8999*8378*
Normal
MIC gain - 0
Tx PGA - 70
Side PGA - 0
Ear gain - 3
HFR gain - 9
Rx PGA - 128
Rx vol - Lv 1 - 10
Rx vol - Lv 2 - 28
Rx vol - Lv 3 - 40
Rx vol - Lv 4 - 50
Rx vol - Lv 5 - 96
Rx comp - Lv 1 - 11
Rx comp - Lv 2 - 11
Rx comp - Lv3 - 11
Rx comp - Lv 4 - 29
Rx comp - Lv 5 - 30
Key vol - Lv1 - 64
Key vol - Lv2 - 64
Key vol - Lv3 - 64
Key vol - Lv4 - 64
Key vol - Lv5 - 64
Headset
MIC gain - 0
Tx PGA - 64
Side PGA - 0
Ear gain - 13
HFR gain - 3
Rx PGA - 128
Rx vol - Lv 1 - 10
Rx vol - Lv 2 - 20
Rx vol - Lv 3 - 42
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 146
Rx comp - Lv 1 - 11
Rx comp - Lv 2 - 11
Rx comp - Lv 3 - 11
Rx comp - Lv 4 - 30
Rx comp - Lv 5 - 28
Key vol - Lv1 - 10
Key vol - Lv2 - 20
Key vol - Lv3 - 42
Key vol - Lv4 - 76
Key vol - Lv5 146
Loud SPK SUP
MIC gain - 0
Tx PGA - 160
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 120
Rx vol - Lv 1 - 16
Rx vol - Lv 2 - 27
Rx vol - Lv 3 - 45
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 128
Key vol - Lv1 - 1
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4
Loud SPK SDN
MIC gain - 0
Tx PGA - 160
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 120
Rx vol - Lv 1 - 16
Rx vol - Lv 2 - 27
Rx vol - Lv 3 - 45
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 128
Key vol - Lv1 - 1
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4
Loud SPK EXT
MIC gain - 1
Tx PGA - 226
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 92
Rx vol - Lv 1 - 16
Rx vol - Lv 2 - 27
Rx vol - Lv 3 - 45
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 128
Key vol - Lv1 - 5
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4
Loud SPK Out Only
Tx PGA - 160
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 120
Rx vol - Lv 1 - 10
Rx vol - Lv 2 - 28
Rx vol - Lv 3 - 40
Rx vol - Lv 4 - 50
Rx vol - Lv 5 - 96
Key vol - Lv1 - 1
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4
Yamaha AMP vol.
31
Yamaha MEL vol.
Normal
Lv 1 - 6
Lv 2 - 12
Lv 3 - 18
Lv 4 - 24
Lv 5 - 31
Melody key
Lv 1 - 2
Lv 2 - 4
Lv 3 - 11
Lv 4 - 18
Lv 5 - 25
Power on/off
Lv 1 - 1
Lv 2 - 10
Lv 3 - 14
Lv 4 - 18
Lv 5 - 22
ISS Normal
Ear gain - 12
HFR gain - 3
Rx vol - Lv 1 - 121
Rx vol - Lv 2 - 186
Rx vol - Lv 3 - 268
Rx vol - Lv 4 - 376
Rx vol - Lv 5 - 564
Rx vol - Lv 6 - 802
Rx vol - Lv 7 - 980
Rx vol - Lv 8 - 1560
Rx vol - Lv 9 - 2167
Rx vol - Lv 10 - 2863
ISS Headset
Ear gain - 10
HFR gain - 3
Rx vol - Lv 1 - 164
Rx vol - Lv 2 - 328
Rx vol - Lv 3 - 492
Rx vol - Lv 4 - 656
Rx vol - Lv 5 - 820
Rx vol - Lv 6 - 984
Rx vol - Lv 7 - 1148
Rx vol - Lv 8 - 1312
Rx vol - Lv 9 - 1476
Rx vol - Lv 10 - 1640
Bluetooth
Tx PGA - 255
Rx PGA - 12
Side PGA - 0
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Usually answered in minutes!
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