I do believe the hiss is coming from my macbook… anyone know how to reduce or totally get rid of it?
Hello @speedymoonman,
Can you send me a copy of the “Debug Info”? 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
Audirvana Mac Version 3.5.44 (3574)
macOS 10.13.6 with 16384MB RAM
Registered to pabl0
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: ON
LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Users/u/Music/Flac Files
iTunes/Music library synchronization: not synchronized
Library database path: /Users//Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite
ACTIVE STREAMING SERVICES
=================== AUDIO DEVICE ========================
CoreAudio audio path, buffer I/O frame size: 512
Max. memory for audio buffers: 13888MB
Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled
Preferred device:
Schiit Modi 3
Model UID:Schiit Modi 3:0D8C:0066
UID:AppleUSBAudioEngine:Schiit Audio:Schiit Modi 3:fd120000:1
Active Sample Rate: 44.1kHz
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 0x2e Built-in Output Manufacturer:Apple Inc.
Model UID:AppleHDA:28 UID:AppleHDAEngineOutput:1B,0,1,1:0
4 available sample rates up to 96000Hz
44100
48000
88200
96000
Audio buffer frame size : 14 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: No
Virtual: Yes
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: DSD via PCM 1.0
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 0x2f 2 channels starting at 1
4 virtual formats:
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
12 physical formats
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 88.2kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz
2 ch Mixable linear PCM Interleaved 20 little endian Signed Integer aligned low in 32bit 96kHz
2 ch Mixable linear PCM Interleaved 20 little endian Signed Integer aligned low in 32bit 88.2kHz
2 ch Mixable linear PCM Interleaved 20 little endian Signed Integer aligned low in 32bit 48kHz
2 ch Mixable linear PCM Interleaved 20 little endian Signed Integer aligned low in 32bit 44.1kHz
2 ch Mixable linear PCM Interleaved 16 little endian Signed Integer 96kHz
2 ch Mixable linear PCM Interleaved 16 little endian Signed Integer 88.2kHz
2 ch Mixable linear PCM Interleaved 16 little endian Signed Integer 48kHz
2 ch Mixable linear PCM Interleaved 16 little endian Signed Integer 44.1kHz
Local devices found : 1
Device #0: ID 0x2e Built-in Output Manufacturer: Apple Inc. Model UID: AppleHDA:28 UID: AppleHDAEngineOutput:1B,0,1,1:0
UPnP devices found : 0
Thank you Damien3 
Does it also happens when you use your Schiit?
I guess so… this how I connect it it MacBook Pro+ audio quest USB + schiit modi 3 + audio quest RCA to Rouge Sphinx V2
Do you have this hiss when you try to play a track from Music for example?
yes but hardly noticeable… when I go close to the speakers I can hear it when music is playing.
Does your Mac can be updated to a more recent version of MacOS?
can’t be updated anymore 
my MacBook is kinda old already but I’m running on High Sierra
If you deactivate Integer mode in Audirvana audio settings, do you still have this hiss?
where can I find the integer mode? : )
Damien I’m really sorry and really appreciate you helping me out 
but I don’t think I have " Audio Device Capacity" ? do I need an update?
@speedymoonman How is the Magni powered? This doesn’t sound like an Audirvana problem so much as the power feeding the DAC. This happens on my Topping E30 if I power it from USB from my computer when a track starts to play (as in the DAC kicks in and becomes active) and completely disappears when I used the USB 5V 2A port on my power bar (which also has an iFi iPurifier AC plugged in for active noise cancelation and conditioning).
ok thank you I’ll try this one
Hi David thank for the suggestion will also try this
Do you have your Schiit selected in Audirvana?