Quote:
Somethings awry with those numbers, Mike


Some makers post miliiseconds, others post microseconds. I've edited the other post to be more consistent.

The MOTU M4, for example, states

Quote:
Windows driver with 2.5 ms Round Trip Latency (32 sample buffer at 96 kHz)
Mac driver (optional, for 2.5 ms RTL@32/96 kHz and loopback feature)


With CoreAudio, the spec for the Mac is 3.16 ms. Other devices are spec'ing as long as 4.53 ms. The Presonus Thunderbolt 3 interface is 1.9 ms and I've seen another that rates theirs as 1.1 ms while trying to convince you that the extra speed is worth the additional $2,000.


Again, it's all Marketing nonsense. If you do the math with the speed of sound at sea level, you'll see that +/- 14" is about right and that RTL over "Fast USB 2" is more than fast enough.

BIAB 2024 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP
Digital Performer11, LogicPro, Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5