No sound from Playback Designs MPD-3

Hi. Loaded latest Audirvana updates but problem remains. Audirvana does not recognize the Playback Designs MPD-3, even though it shows/been selected with the audio output. Only change is that Audirvana is now not defaulting to the internal speakers, just that there is no sound. Grateful any suggestions that would help get this fixed.

Mac or PC ?
Was playing before?
if on Mac, open Utilities folder and lauch Audio Midi Setup… can you see DAC there?

iMac running Sierra. Continuing problem, not affecting other DACs. Previously reverted to internal speakers, now just no sound. Checked Audio Midi, & MPD-3 appears there. Opening Audirvana seems to click MPD-3 off, rather than establishing handshake.

Hello @spesalium, Can you send me a copy of the “Debug Info” while you select your MPD-3? You can get it in Audirvana Settings>General>Debug Info

Note: By clicking on the Debug Info button, Audirvana automatically copies all its content, all you have to do is paste it in response to this message

Hi. Appreciate the reply. Here’s the debug info. Thanks.

Audirvana Mac Version 3.5.40 (3570)
macOS 10.13.6 with 4096MB RAM

Registered to John Di Gangi

SIGNAL PROCESSING:

Polarity Inversion:
    Globally: OFF
    Per track: ON
Effects plugins NOT ACTIVE

UPSAMPLING:
SoX not in use
SoX filter parameters
Bandwidth at 0dB = 99.5
Filter max length = 30000
Anti-aliasing = 100
Phase = 66

AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: None
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 0 folders
iTunes/Music library synchronization: last synchronized on Fri Jan 17 15:29:36 2020

Library database path: /Users/johndigangi/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite

ACTIVE STREAMING SERVICES
Qobuz: Connected as
TIDAL: Connected as HIFI

=================== AUDIO DEVICE ========================

CoreAudio audio path, buffer I/O frame size: 512

Max. memory for audio buffers: 1664MB

Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled

Preferred device:
MPD-3
Model UID:MPD-3:23BA:0003
UID:AppleUSBAudioEngine:Playback Designs:MPD-3:fa140000:1

Active Sample Rate: 96kHz
Hog Mode is off

Bridge settings:
Sample rate limitation: none
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: OFF

Selected device:
Local audio device
ID 0x43 MPD-3 Manufacturer:Playback Designs
Model UID:MPD-3:23BA:0003 UID:AppleUSBAudioEngine:Playback Designs:MPD-3:fa140000:1

8 available sample rates up to 384000Hz
44100
48000
88200
96000
176400
192000
352800
384000
Audio buffer frame size : 29 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: No
Virtual: No
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: DSD via PCM 1.1
Device audio channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x44 2 channels starting at 1
16 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 384kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 352.8kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 384kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 352.8kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 192kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 176.4kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz

16 physical formats
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 384kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 352.8kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 192kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 176.4kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 384kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 352.8kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 192kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 176.4kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz

Local devices found : 2
Device #0: ID 0x2f Built-in Output Manufacturer: Apple Inc. Model UID: AppleHDA:24 UID: AppleHDAEngineOutput:1B,0,1,2:0
Device #1: ID 0x43 MPD-3 Manufacturer: Playback Designs Model UID: MPD-3:23BA:0003 UID: AppleUSBAudioEngine:Playback Designs:MPD-3:fa140000:1

UPnP devices found : 0

, or

Try to enable exclusive access and integer mode.

Appreciated the advice. Switched exclusive access and integer mode off & back on. Worked first time but not after I exited Audirvana, & tried it second time. Problem remains establishing reliable connection between Audirvana & MPD-3.

Looks like the magic combination is exclusive access on, integer mode off.

Power off both the device and the Mac. Start the Mac, power on the device and start Audirvana to make the settings changes.