Anyone successfully using multiple ASIO interfaces simultaneously?

Before I go down this rabbit warren I figured I ask the collecting wisdom here.

I know that ASIO itself does not support multiple interfaces. I know that there are software solutions (ASIO4All among others) that claim to do so.

I'm wondering if it can really be done.

Thanks!

Depends on the supplier of the interface driver. ASIO restricts the host to one driver not one interface. For example, Roland provides a driver for running two Studio Capture interfaces concurrently.

wst3
Before I go down this rabbit warren I figured I ask the collecting wisdom here.

I know that ASIO itself does not support multiple interfaces. I know that there are software solutions (ASIO4All among others) that claim to do so.

I'm wondering if it can really be done.

Thanks!

If your audio interface driver supports using multiple interfaces, it effectively presents the multiple interfaces as a single ASIO device. This is the only reliable means of running multiple audio interfaces.  No clocking issues, no offset issues, etc

Just to add, seeing as it's the driver that provides the ability for multiple devices it means devices from the same manufacturer are required. The manufacturer usually will specify which devices can be concatenated.

RME is one of many companies that allows you to combine multiple devices that use the same driver.

Another way to do it also is to have a single interface that supports ADAT IO so that you can connect multiple additional inputs/outputs which will show up in your driver and thus in Sonar.

I would really like to be able to use multiple ASIO devices from different makers at the same time.  My primary interface is a Tascam US-16x08.  It's awesome.
 
However, I also have BOSS GT-001 that sports re-amping capability via USB, a THR10 with dry+wet pairs available via USB, and now a Laney IRT Studio with direct dry recording and re-amping support via USB.  In order to use one of these, I have to take the 16x08 out - which has my monitors connected, blah, blah.
 
Anyway, you get the idea ...
 
Prior to getting the 16x08 I experimenting with aggregation via ASIO4ALL.  It worked after much fiddling about, but the performance wasn't something I could live with.  So I don't use the cool features some of my external hardware has.
 
The only way out of this that I can think of is to add a Mac to the mix for tracking with these other devices.  But that would be expensive and I'm not sure if the alleged I/O aggregation capability of Mac really works as well in practice as the stories I've heard.
 
Maybe Windows 10 will address this.

I am running 2 Studio-Captures synced. The drivers show up in Sonar that both interfaces are running but in some other programs it only allows access to them one at a time.

Audio interfaces are just like 'Highlander' - there can only be one!  (Although they also differ in that they tend not to go about chopping people's heads off).
 
The reason for this is that there can be one, and one only, master word clock in the system (as Jim indicates above).
 
So let's say you have one ASIO driver interface hanging off the end of a USB bus, and another sitting on the PCI bus.  How then are their clocks to be sync'd, i.e. one slaved to the other?  That is a damn good question and there is not, as far as I'm aware, an answer to this.

mudgel
 
Another way to do it also is to have a single interface that supports ADAT IO so that you can connect multiple additional inputs/outputs which will show up in your driver and thus in Sonar.

I have a question about this, please?
 
I have never used an adat I/O although I have 2 compatible devices...
If ADAT is the chosen driver, do the brands still matter?
Can these devices be chained?
 
Is ADAT a reliable/quality/high fidelity interface?
Any info greatly appreciated.
 
MEL

Just to expand on the ADAT side of things, if you use ADAT devices you still need an audio interface to connect the ADAT stuff to the PC.

My interface is an RME UFX, which has a Focusrite Octopre ADAT unit connected to it to add another 8 ins and outs. The RME and it's driver handles all communication with the PC, and the RME Totalmix software mixer does all the input and output routing side of things. The Octopre neither has nor needs a driver because the DAW never sees it directly but addresses it through the RME.

I could add another ADAT, made by any manufacturer, if I needed it and the setup would still work in exactly the same way. Some PCI audio interface cards are simply ways to connect a lot of 8-channel ADAT units to a PC, with the card being the audio interface as far as Windows and DAW software is concerned.