List of Working/Non Working Class Compliant USB Interfaces

Neodymium wrote:You didn't respond to this.

Was that with Monitor set to In?

When you lower the track levels in MPC does the crackling decrease too, or stay the same. This should indicate if it's the crackling is part of the audio signal or the part of the system. Back in the firewire, and pre USB 2 days, if buffer setting were too short, or the system overloaded, the crackling was a system noise, not and Audio signal.

Also if it is is changing with the mixer level, is it both stereo pairs from the octatrack or just one or the others.

Have you tried removing the octatract from the equation. Send the signal out the 2 stereo pairs, but then run the cables back into the inputs, routing that straight back in through the 2 tracks the octatrack was on.

It is regardless if Octatrack is in the chain or not.
Muting all but one Audio track at a time, and the crackling is there and all input channels. Not as loud, but still there. But that is to expect I guess, the crackle on Sequence change is loudest when all tracks are unmuted (so each crackle is added on top of each other = louder).

Monitor In was set on all tracks when muting them.

The crackles followed the volume, so lowering the signal and the crackles was also lowered. When lowering the volume like 50%, and cranking up headphone level to compensate, the crackle was equally there even with the lower input signal.

I've spent a full weeks evenings on this now, and I'm starting to be over this. I'm investigating if I will migrate to an Ableton Push 3 Standalone instead.
Just waiting for some answers regarding if it will solve my MPC annoyances first...

Vaksa wrote:Arturia Audiofuse 16rig seems start working with 1.3.3 firmware. Tested on MPC 3.4.0.105 beta.

does it work with 3.7.0. ? hardware and software.


thank you

-dave-

Works perfectly.

Arturia Audiofuse 16Rig (master).
Arturia Audiofuse 8Pre (slave) Word Clock to Up.
RME Fireface UC (slave) Word Clock to Up.

horisonten wrote:It is regardless if Octatrack is in the chain or not.
Muting all but one Audio track at a time, and the crackling is there and all input channels. Not as loud, but still there. But that is to expect I guess, the crackle on Sequence change is loudest when all tracks are unmuted (so each crackle is added on top of each other = louder).

Monitor In was set on all tracks when muting them.

The crackles followed the volume, so lowering the signal and the crackles was also lowered. When lowering the volume like 50%, and cranking up headphone level to compensate, the crackle was equally there even with the lower input signal.

I've spent a full weeks evenings on this now, and I'm starting to be over this. I'm investigating if I will migrate to an Ableton Push 3 Standalone instead.
Just waiting for some answers regarding if it will solve my MPC annoyances first...

Just wanted give a final to update to my issues, so that is fully documented before throwing in the Akai towel once and for all...

After my final testing this seems to be 100% a resource issue. I started removing tracks one by one to see if that solved my crackling.

The project I'm having issues with has 23 tracks used all in all. And like 40-50 sequences with mostly simple sequencer data. Memory usage is 47% and the CPU meter is between 20-37% in use.

And after removing like 5 drum programs with short and longer samples and then 4 plugin tracks, the crackle on sequence change seemed to go away. There were still some small crackles here and there during playback, not as noticable, but still there.

So 9 out of a total of 23 tracks (of which 5 are the audio tracks set to monitor In, and 5 midi tracks to only send midi data to my external gear) needed to be removed...
When removing these I was down to like 17% CPU usage and 23% memory usage.

So if I want to use my MPC Live for anything serious, I have a whopping 4 plugins or Drum programs I can use before getting crackles. And that is a joke.

My suspicion is that the CPU and Memory usage doesn't show the full picture, especially when using a class compliant audio interface!

So this piece of s**t OG MPC Live hardware is going out the window ASAP. It is totally unacceptable to not be able to utilize more than 17% of the cpu and 23% of the memory before getting crackles when using an usb audio interface.

So now it is Ableton Push 3 Standalone time for me. Hopefully it will allow me to actually make music instead of spending my time troubleshooting.

[dada] wrote:Works perfectly.

Arturia Audiofuse 16Rig (master).
Arturia Audiofuse 8Pre (slave) Word Clock to Up.
RME Fireface UC (slave) Word Clock to Up.

Mpc live 3 stand alone ?

THE absolute best option for akai force or mpc is METRIC HALO ULN-8 or LIO-8.
This is the ONLY interface that has allowed me to get the full 32 I/O coming from the force. As if that wasn't enough metric halo 3d interfaces also allow you to use the one hardware interface as both the external audio device for the force via USB-C and the primary interface for you mac or PC or linux via ethernet (MHLink) at the same time. You can stream all 32 channels back and forth from your daw in to the akai force as if it were an aggregated device. Amazing piece of gear. They are future proof interfaces and are top tieer quality. and the onboard DSP can also be used on both the computer and akai force. ABSOLUTELY AMAZING!!!

MPC One
MPC Firmware 2.15.1
Roland Go:Mixer Pro-X generates -
"Error: 44100 sample rate may not be supported on the external device. Code -22"

horisonten wrote:Since the RME Digiface USB now have class compliant mode as per the january update.

Can anyone owning one test if it works pop/crackle free with Audio tracks set to Monitor In?
Not only for Playback of internal MPC tracks!

5+ stereo tracks would be great if you can test with the above criteria

Good evening! for a long time I have been looking for an audio interface that can work as a digital ADAT mediator for my MPC. The main reason is that I have a digital console with 24 ADAT channels and various audio interfaces that have ADAT connectors. so it is a fact that the latest upgrade of the digiface usb can work after flashing as a class compliant device and i took the risk after a lot of research to buy it. so to the point. 1. It is recognized by the Mpc one plus that I have. 2. The Mpc one plus recognizes 8 playback channels and 4 recording channels if the 32 channel check function is not activated, and if it’s activated it recognizes 32 channels in and 32 channels out. Unfortunately it does not recognize channels 33-34 which correspond to the headphones so NO headphones. 3 the MPC can only function as a master clock in collaboration with the digiface usb and only in 44.100hz sampling rate, so the devices that are going to be connected must lock to one of the Rme adat ports at 41.100hz. 4. The bad news. I opened 16 channels in the MPC and routed them to a Motu 896 mk3 that i own and recorded them with complete success without any problems (no clicks no drifting no pops) all great so far. However, when I opened a recording channel in the MPC so that I could route a synth which i connected to the analog input of the motu, so that I could route it and record it on the MPC then the symphony of the digital world began. Conclusions: A very. Good move by RME to upgrade the CC option which is compatible with the new era MPCs, multi-channel digital transmission is possible without problems but unfortunately in one direction either only sending or only receiving, the situation changes when the use is bidirectional.

Hello everyone,
I've read through the entire thread, but I haven't been able to find a clear answer.
Can anyone tell me if the Focusrite 18i8 1st gen works !? Thanks

Native Instruments Audio4DJ does NOT work, as it's not class compliant.

Native Instruments Traktor Audio 6 DOES work, as the latest firmware made it class-compliant.

horisonten wrote:After my final testing this seems to be 100% a resource issue. I started removing tracks one by one to see if that solved my crackling.

The project I'm having issues with has 23 tracks used all in all. And like 40-50 sequences with mostly simple sequencer data. Memory usage is 47% and the CPU meter is between 20-37% in use.

And after removing like 5 drum programs with short and longer samples and then 4 plugin tracks, the crackle on sequence change seemed to go away. There were still some small crackles here and there during playback, not as noticable, but still there.

So 9 out of a total of 23 tracks (of which 5 are the audio tracks set to monitor In, and 5 midi tracks to only send midi data to my external gear) needed to be removed...
When removing these I was down to like 17% CPU usage and 23% memory usage.

So if I want to use my MPC Live for anything serious, I have a whopping 4 plugins or Drum programs I can use before getting crackles.

I know this doesn't help you, but I'm running a project of pretty much identical scale to what you describe here now on a LiveII with UMC1820 (and MOTU ADAT expanders - 8PRE for inputs, 828MkII for outputs - so 16 in 18 out) with Monitoring set to IN across the board on the MPC (MIDI tracks controlling external synths, audio coming back into the MPC) with no crackles whatsoever and have been doing so for months. Sounds like OG MPC Live lacks the CPU grunt for it not to overrun the buffer size.

I thought all the first gen machines had the same CPU, didn't they?

Good point… indeed they do. Makes it even more baffling.

Hi, I've read through the thread and checked the wiki, and I'm still not sure where things stand with the Allen & Heath ZEDi-10FX. The spec sheet for it says it can operate at 44.1khz, so it seems like it should work with my MPC One+, but I'd like to be sure before I drop money on it. Anyone have experience with this mixer?

Never mind. I got a Tascam Model 12 instead. It's pretty chunky, but it's working great with my MPC.