Audio Drop Out -- Trying to Find Culprit in Logs

[Mac Pro 5,1, Running 10.12.6]

For months now, my audio interface (Apogee Duet 2, USB-powered) seemingly randomly cuts out, causing my speakers to pop loudly, then power cycles indefinitely.

These drop-outs are not obviously tied to any activity on my Mac–it could happen when I’m checking email on Chrome, using Pro Tools, on Steam, or even if the computer is totally idle.

Tonight the problem reoccured at 8:35 PM, and I went to the Logs section of System Information to try to grab any relevant entries. Under Apple System Log (ASL) Messages , the following entries were from 8:35, when the audio interface’s drop-out and power cycling began:

Sep 25, 2018, 8:31:55 PM cloudd[407]: notify name “com.apple.cloudkit.pcs.flushCaches” has been registered 20 times - this may be a leak
Sep 25, 2018, 8:31:55 PM com.apple.xpc.launchd[1]: Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Sep 25, 2018, 8:35:09 PM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit
Sep 25, 2018, 8:35:09 PM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit
Sep 25, 2018, 8:35:09 PM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit

Under Power Management logs , it showed:

2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.context174.preventuseridledisplaysleep” 00:16:08 id:0x0x50000818c [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.context174.preventuseridlesleep” 00:16:08 id:0x0x10000818b [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.context150.preventuseridledisplaysleep” 00:16:23 id:0x0x50000810b [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.context150.preventuseridlesleep” 00:16:23 id:0x0x10000810a [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.context115.preventuseridledisplaysleep” 00:16:29 id:0x0x500008047 [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.context115.preventuseridlesleep” 00:16:29 id:0x0x100008046 [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.AppleUSBAudioEngine:Apogee:Duet USB:fd500000:2,1.context.preventuseridledisplaysleep” 00:14:11 id:0x0x5000081cd [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.AppleUSBAudioEngine:Apogee:Duet USB:fd500000:2,1.context.preventuseridlesleep” 00:03:21 id:0x0x1000081cc [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.context61.preventuseridledisplaysleep” 00:16:34 id:0x0x500008017 [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.context61.preventuseridlesleep” 00:16:34 id:0x0x100008016 [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.context166.preventuseridledisplaysleep” 00:16:12 id:0x0x50000816f [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:05 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.context166.preventuseridlesleep” 00:16:12 id:0x0x10000816e [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:06 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleDisplaySleep “com.apple.audio.AppleUSBAudioEngine:Apogee:Duet USB:fd500000:2,1.context.preventuseridledisplaysleep” 00:12:28 id:0x0x500008210 [System: PrevIdle DeclUser IntPrevDisp kDisp]
2018-09-25 20:35:06 -0700 Assertions PID 250(coreaudiod) Released PreventUserIdleSystemSleep “com.apple.audio.AppleUSBAudioEngine:Apogee:Duet USB:fd500000:2,1.context.preventuseridlesleep” 00:12:27 id:0x0x10000820f [System: PrevIdle DeclUser IntPrevDisp kDisp]

Do these log entries point to any potential source of this audio interface power cycling problem?