[How to do instruction] MERUS™ audio amp HAT ZW: configuration

[OlafM]

Working set-up with image from:
MoOdeMerusAmp

amixer gives:

Code:

amixer
Simple mixer control 'A.Mstr Vol',0
 Capabilities: volume volume-joined
 Playback channels: Mono
 Capture channels: Mono
 Limits: 0 - 50
 Mono: 50 [100%] [0.00dB]
Simple mixer control 'B.L Vol',0
 Capabilities: volume volume-joined
 Playback channels: Mono
 Capture channels: Mono
 Limits: 0 - 50
 Mono: 50 [100%] [0.00dB]
Simple mixer control 'C.R Vol',0
 Capabilities: volume volume-joined
 Playback channels: Mono
 Capture channels: Mono
 Limits: 0 - 50
 Mono: 50 [100%] [0.00dB]
Simple mixer control 'D.Lim thresh',0
 Capabilities: volume
 Playback channels: Front Left - Front Right
 Capture channels: Front Left - Front Right
 Limits: 0 - 60
 Front Left: 35 [58%] [-15.00dB]
 Front Right: 35 [58%] [-15.00dB]
Simple mixer control 'F.Limiter Enable',0
 Capabilities: enum
 Items: 'Bypassed' 'Enabled'
 Item0: 'Enabled'
Simple mixer control 'G.Limiter Attck',0
 Capabilities: enum
 Items: 'Slow' 'Normal' 'Fast'
 Item0: 'Fast'
Simple mixer control 'H.Limiter Rls',0
 Capabilities: enum
 Items: 'Slow' 'Normal' 'Fast'
 Item0: 'Slow'
Simple mixer control 'I.Err flycap',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Slow'
 Item0: 'Ok'
Simple mixer control 'J.Err overcurr',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'K.Err pllerr',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'L.Err pvddunder',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'M.Err overtempw',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'N.Err overtempe',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'O.Err pinlowimp',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'P.Err dcprot',0
 Capabilities: enum
 Items: 'Ok' 'Error' 'Ok'
 Item0: 'Ok'
Simple mixer control 'Q.PM Prof',0
 Capabilities: enum
 Items: 'PMF0' 'PMF1' 'PMF2' 'PMF3' 'PMF4'
 Item0: 'PMF0'
Simple mixer control 'R.Power Mode',0
 Capabilities: enum
 Items: 'Dynamic power mode' 'Power mode 1' 'Power mode 2' 'Power mode 3'
 Item0: 'Dynamic power mode'
pi@moode:~ $