miguel88
actually I m checking to get the moto ultralite mk4 or the Studio 192 mobile
 
 how it is the 192? do you have problem with latency cause i read that have some problem with latency so you have to  choose high sample buffer  when you use virtual instruments.
 
how is the motu mk4 latency?
 
i compose music with a lot of virtual instruments so i dont wanna have have problem with RTL

The MOTU Ultralite mk4 yields lower round-trip latency than the Studio 192 mobile.
At a 64-sample ASIO buffer size 44.1k, the Ultralite mk4 can run at sub 5ms total round-trip latency.

yes look like motu works good but i would like to know the new round-trip latency of the studio 192 or studio 192 mobile  with the new driver from two months ago,
if someone have this interfaces can they put here they round-trip latency on they daw,
 
thanks

When I was looking at upgrading my interface, I tried a Studio 192.  The automatic setup that the Presonus software did, wound up with over 22ms latency.  I was able to lower it myself but only in the 6ms or so (input) area.  There are many posts on the web about the poor latency of the Studio 192 models.  I never really got to work with the Studio 192 and try to lower the latency even further as it died on me the second day (would not power off).  I sent it back and wound up with an MOTU 896mk3 Hybrid.  The latency for the MOTU unit is 2.7 msec input, 3.3 msec output and 6.1 msec total round trip (as reported by Sonar).

New MOTU 624 is a real contender at $795 list.

yes the new one have better converters and have one moro knob to control the volume of outputs so that  is a small plus

I sent mine back to the dealer. Way too unstable for me. 
 
I had a Mk3 hybrid connected on Firewire (which already was a nightmare to make it work without a crash - i had to buy a specifi firewire pci card with TI chipset blabla , cause motu seems very sensitive). Latencymon helped a lot to make my system work better. The Mk3 hybrid was fine except the dynamic compressor sometimes get stucks in "full" compression" and needed to reboot the interface. 
So despite of all the problems i had with the MK3 hybrid, i tried to keep up with Motu, cause the products are great on the Paper. With the MK4, I liked the idea of web based mixing (in use it's a bit annoying cause it opens a new windows each time you click - would be better if you get the opened window back) . 
 
Features of the MK4 are great, and the routing grid is very powerful - and quite complex to master - but with the MK4 it's not a day when i need to reboot all to get it work correctly again. (and sometimes many times a day if i often switch from 44 to 96, buffers etc.. it quickly gets buggy.
Sometimes the card is not "visible" to Motu discovery ( services.msc / restart motu services and back again ..) 
I noticed more noise on the mk4 than MK3 (very much nois electric noise) on the mic1 input pass +50, and it was related to the XLR Plug / Cable. When i moved the cable in the plug i was able to "lower/raise" the noise. I changes the cable and the XLR seem to make better contact , no more electric noise past 50. I dont know if it's the cable or the connector on the interface that is faulty
 
- i even had a windows blue screen .. just by trying some buffers / latency test from sonar , the system went unstable. 
 
"Who crashed" (from resplendescence)  said : 
Conclusion

---

2 crash dumps have been found and analyzed. A third party driver has been identified to be causing system crashes on your computer. It is strongly suggested that you check for updates for these drivers on their company websites. Click on the links below to search with Google for updates for these drivers:



If no updates for these drivers are available, try searching with Google on the names of these drivers in combination with the errors that have been reported for these drivers. Include the brand and model name of your computer as well in the query. This often yields interesting results from discussions on the web by users who have been experiencing similar problems.

 
I sent this to motu and their answer was : try another USB port .. c'mon Guys ! i don't spent 700 € to debug your soundcards .. 
I sent it back to the dealer.
 
RME Fireface UCX on it's way. Hope i wont be disapointed cause the price is way higher. 
 

andrelau
I sent mine back to the dealer. Way too unstable for me. 
 
I had a Mk3 hybrid connected on Firewire (which already was a nightmare to make it work without a crash - i had to buy a specifi firewire pci card with TI chipset blabla , cause motu seems very sensitive). Latencymon helped a lot to make my system work better. The Mk3 hybrid was fine except the dynamic compressor sometimes get stucks in "full" compression" and needed to reboot the interface. 
So despite of all the problems i had with the MK3 hybrid, i tried to keep up with Motu, cause the products are great on the Paper. With the MK4, I liked the idea of web based mixing (in use it's a bit annoying cause it opens a new windows each time you click - would be better if you get the opened window back) . 
 
Features of the MK4 are great, and the routing grid is very powerful - and quite complex to master - but with the MK4 it's not a day when i need to reboot all to get it work correctly again. (and sometimes many times a day if i often switch from 44 to 96, buffers etc.. it quickly gets buggy.
Sometimes the card is not "visible" to Motu discovery ( services.msc / restart motu services and back again ..) 
I noticed more noise on the mk4 than MK3 (very much nois electric noise) on the mic1 input pass +50, and it was related to the XLR Plug / Cable. When i moved the cable in the plug i was able to "lower/raise" the noise. I changes the cable and the XLR seem to make better contact , no more electric noise past 50. I dont know if it's the cable or the connector on the interface that is faulty
 
- i even had a windows blue screen .. just by trying some buffers / latency test from sonar , the system went unstable. 
 
"Who crashed" (from resplendescence)  said : 
Conclusion

---

2 crash dumps have been found and analyzed. A third party driver has been identified to be causing system crashes on your computer. It is strongly suggested that you check for updates for these drivers on their company websites. Click on the links below to search with Google for updates for these drivers:



If no updates for these drivers are available, try searching with Google on the names of these drivers in combination with the errors that have been reported for these drivers. Include the brand and model name of your computer as well in the query. This often yields interesting results from discussions on the web by users who have been experiencing similar problems.

 
I sent this to motu and their answer was : try another USB port .. c'mon Guys ! i don't spent 700 € to debug your soundcards .. 
I sent it back to the dealer.
 
RME Fireface UCX on it's way. Hope i wont be disapointed cause the price is way higher. 
 

 
do you use pc or mac?
is one of the one i thinking to get but probably i will wait after namm to see the reviews and if any new good option, i use mac so motu usually is good on, on pc have more problem with drivers

I use PC and the problems of stability seems to occur after switching Sample rate Back and forth etc.. But when it works it works very well ! ( very low latency , good sound quality ) . 

Just to let you know : 
 
The RME Fireface UCX is WAY more stable than the MK4 on my machine. 
Same USB port, Same Power plug. Drivers are very , very stable.  No Crash. I keep switching from app to app, change Sample rate , etc... no Crash. 
Sometimes the MK4 became Erratic after such operations. (i'm sure it's just a driver pb) . 

andrelau
Just to let you know : 
 
The RME Fireface UCX is WAY more stable than the MK4 on my machine. 
Same USB port, Same Power plug. Drivers are very , very stable.  No Crash. I keep switching from app to app, change Sample rate , etc... no Crash. 
Sometimes the MK4 became Erratic after such operations. (i'm sure it's just a driver pb) . 

Ive been researching for the past few months for an audio interface upgrade.RME and MOTU were on the top of the list.Iv read a lot of posts here and outside on problems with MOTU. On the other hand Ive hardly heard of any complaints against the RME interfaces. So im almost set to get the ucx. This thread is just reconfirming that my conclusion was right.