ronald wrote:soundcart: in or extern? what is better/more useful? (connection for two headphones)
Hello Ronald,
The means by which the audio interface connects to the PC should have a negligible impact on performance, provided that everything is working properly. (I've read previously that the theoretical advantages of PCIe over USB are only something like 0.5 ms of latency, which is irrelevant for practical purposes.)
Most recent/current audio interfaces use USB, which should be fine (unless it turns out that the PC motherboard has USB port controllers that are problematic for reliable real-time performance, but that's unlikely and can usually be worked around fairly easily and cheaply by getting a dedicated PCIe USB controller card for the PC.)
A few companies (e.g. RME) make audio interfaces that can be connected via either USB or FireWire, with the potential benefit that you can use the other if it turns out that a particular PC has performance issues with one of those types of connections. However, those interfaces tend to be more expensive, and (as above) it's usually easy and cheap to work around such issues anyway by getting a dedicated USB (or FireWire) controller card for the PC if it turns out to be necessary.
Hence any of USB, FireWire, PCIe, or PCI should be fine, although for maximum support lifespan from the manufacturer it's probably ideal to go with a reasonably recent model, which probably makes USB the most likely candidate.
These two documents cover audio and MIDI interfaces and USB, FireWire, PCIe, etc. (especially the second):
https://www.hauptwerk.com/clientuploads/documentation/PDF/HauptwerkPrerequisites.pdfhttps://www.hauptwerk.com/clientuploads/documentationPDF/HauptwerkBackgroundTechnicalInfoOnComputerHardware.pdf
Best regards, Martin.
Hauptwerk software designer/developer, Milan Digital Audio.