Harrison Mixbus is now available for Linux and OS X

Great news from Harrison Consoles .... and yes, for those who are curious, your purchase of Mixbus does generate some income for Ardour.

Mixbus™ is a full-featured Digital Audio Workstation (DAW) with "True Analog Mixing"™: a combination of Harrison's world-renowned sound and features in a knob-per-function interface. Now cross-platform on both Linux and OSX, Mixbus provides a solution for engineers and mixers who need a recorder, editor and mixing system with world-class sound and features.

screenshot of Harrison Mixbus

Mixbus Features:

  • Straightforward “knob per function” mixer layout based on Harrison's renowned 32-series and MR-series music consoles.
  • Precision DSP algorithms for EQ, Filter, Compression, Analog Tape Saturation, and Summing based on Harrison's world-renowned large format analog and digital mixing consoles.
  • Unlimited stereo or mono input channels (based on available CPU power) featuring High-pass Filter, EQ, Compression, and 4 Mix Bus sends on every channel.
  • 4 Stereo Mix Buses (can be used for groups or auxes) featuring Tone controls, Compression, Sidechaining, and Analog Tape Saturation.
  • Stereo Master Bus that features Tone controls, Analog Tape Saturation, K-meter, and Limiting to help you make polished mixes.
  • Automatic delay compensation for any routing combinations of Tracks to Mixbuses and/or Master Bus. This allows for parallel paths with different plugins that remain time-aligned to the output.
  • Comprehensive "at-a-glance" metering with peak, peak hold, and compressor gain reduction visible on every track and bus.
  • Extensive DAW features via the Ardour Digital Audio Workstation.
  • Uses any sound I/O supported by ALSA and/or JACK on Linux
  • Supports LADSPA and LV2 plugins on Linux

We originally launched Mixbus for OSX in 2009, and it was a big success! Since then we've launched 6 free updates to our customers, added dozens of features, and built a community of users. The Linux version provides the same great features as the OSX version!

Purchase now at: harrisonconsoles.com - Mixbus.

Yes I understand that, but it

Yes I understand that, but it is not at a point where it would be stable to use for production work.


yeah you're right there I was

yeah you're right there I was just wondering for the future
Anyhow ardour2 and mixbus is a strong formula

When I installed Mixbus, I

When I installed Mixbus, I got this message:

"System failed the quick sanity check...Looking for the cause

!!! WARNING !!! - Your system seems to use frequency scaling.
This can have a serious impact on audio latency. You have two choices:
(1) turn it off, e.g. by chosing the 'performance' governor.
(2) Use the HPET clocksource by passing "-c h" to JACK
(this second option only works on relatively recent computers)"

Anyone else get this message?

Yes other people get it, what

Yes other people get it, what is your question exactly?


@Worker Ant: Its telling you

@Worker Ant: Its telling you that the machine you are installing the software on is set to use a variable CPU clock speed (probably on a portable machine, as part of the power management scheme) Mixbus will still install and run, but if you want to get the best and most reliable performance you might want to follow the suggestions in 1) and 2)

I got the same message on a

I got the same message on a 64 bits system no portable machine.
Modern CPUs and the kernel's CPUFreq implementation are able to switch frequencies very fast.

They can switch fast, but not

They can switch fast, but not fast enough to upset the behaviour of programs that have a very tight coupling to what is assumed to be constant-rate h/w. It might not cause a glitch in JACK in many cases, but its still not right the way to run a machine designed to do pro-audio.

Maybe the best thing then is

Maybe the best thing then is to turn off power management - performance because most things are done dynamically these days.
I know openSuse has chosen to remove those CPU frequency settings from the GUI.
Advanced users still can make use of command line tools like the cpufreq-utils.

@antondvh: that is the entire

@antondvh: that is the entire point of that message, if you read it :)

Is more than one core

Is more than one core necessary to run Mixbus? Is anyone running it on a one core box? At the moment I only have a one core box myself but planning to build a new one with 2-4 cores hopefully soon, but I don't want to make the expense if it's money I can use for a newer computer and not be able to run it on the current one, can any of you share your experience or knowledge?

Also how many installs does the license permit? Can I install on more than one box?


I run it on a single core

I run it on a single core Intel 2,8 with 2 GB ram inside AVLinux, it runs really fine. I have between 20 and 50 tracks, the linuxDSP plugins, IR (for the drums) and sometimes a few additional plugins.

Runs fine, together with a Hydrogen and a harmonySEQ.

I record via overdubbing, export to a stereo track and do there the (pre)master.

No probs here with a single core.

About the licence thing.... you get a licence file, so it should be no problem to install it on more than one box. I just can't tell if it is allowed. Maybe you ask Ben Lofts in the chat.

I wouldn't recommend it on a

I wouldn't recommend it on a single core, it likely is possible, but it will likely be painful as well.

In as far as the license, keeping in mind I am not Harrison, I believe the stance is, if you paid for the license, you can install it as many times as you wish on your own computer[s]. Obviously no distribution is allowed. Take this with a grain of salt though, I suggest contacting Harrison for clarification.


Heh ok someone already jumped

Heh ok someone already jumped in with a positive experience on single core;) Always glad to be corrected, but I certainly wouldn't run it with a low clocked CPU then.


the answer is yes, you re

the answer is yes, you re allowed to run it on more than one machine. i asked harrison how its about the licence cause i want to run it on a tower and a laptop. so its a personalized licence, which is great. ...

Oh great news about the

Oh great news about the license, thanks calimerox, and just like seablade says redistributing wouln't be nice...., so I'll see, I'm still finishing some expenses here in my home studio, have been more of a carpenter than musician the last past weeks (sound proof door, acoustic panels, etc..), but I'm almost done so I'll might give Mixbus a go soon. I'll still wait for anyone else on single core to jump in and let me know how they're coming along.

Thanks scg62 for your experience.

Just purchased it, the thing

Just purchased it, the thing is rock stable on my system (Just as expected from Ardour). For sure 2+ cores and more than 1GB RAM will surely help, but it runs without glitches or pain. Further heavy testing coming this way....

Ardour+Mixbus is like cheese and wine (throw in some good bread)...

This will unfortunately pull me a bit away from the Ardour3 testing, will still be helping as much as I can, but now I have a new tool to learn.

Thanks Paul and Devs, Thanks Harrison Consoles...


Running it here on a single

Running it here on a single core 2.4 GHz AMD 3800+ cpu with 4G memory and on a dual-core laptop with a 2 GHz AMD TurionX2 and 3G memory.

Runs well on both boxes. :)



I take it that you have to

I take it that you have to buy another license to run Mixbus on Linux even if you already have Mixbus on OSX? If that's the case, I won't buy. I have already stopped using Mixbus on OSX due to problems. I would have liked to try Mixbus on Linux but won't bother now. I'll stick with Ardour.

@ efflux: I don't think you

@ efflux:

I don't think you need another license for another OS...

@efflux Pretty certain you


Pretty certain you don't need another license no. In fact I am all but positive as when you purchase Mixbus now you get links to both the OS X version and the Linux version, and your license file works with both. The same license applies as when you purchased it, but no I don't think they are out to force people to buy it multiple times.


I get no links (from Mixbus

I get no links (from Mixbus when it knows about updates - I did this after the Linux version was released) to anything other than OSX version and I have no license file that I know of, just a file which is the full Mixbus app. Essentially the Harrison policy appears to be if you bought Mixbus before the Linux version you have to buy another license to get the Linux version. I can't see anything explaining anything else and everything points to that scenario. Mixbus has not been top of my agenda recently. Basically because I'm ditching the Mac for anything except hosting plugins which by the way I'm having to do in Ardour. AUs generally have problems here and there and Ardour is in fact better than some other hosts. No doubt they all work fine in Logic but I ditched that a long time ago. So it would be nice if I could now run Mixbus on Linux. I've already paid $94 for the app. I know this is not a huge amount but essentially Mixbus is channel strips tacked onto Ardour so although very useful it's not essential.

I guess I'll have to contact Harrison but I shouldn't even have to do that. Mixbus, or rather the Harrison part of this version of Ardour, is not open source and we have to pay for it. Therefor there should be no problems or confusion over issues like this and you most definitely should get a license that allows both Mac and Linux.

@efflux Answer is essentially


Answer is essentially contact Harrison. They will take care of you.


The update to Mixbus 2.0

The update to Mixbus 2.0 cleared things up. I get downloads for both platforms.