Hello,
I would like to hear your experiences with Hapax and Linnstrument.
Can Hapax handle multiple MPE channels at the same time?
Does Hapax output MPE midi that works with your MPE synth?
Any bugs found so far?
I got Linnstrument and Hydrasynth, and thinking of getting Hapax!
As a Linnstrument player, there is one thing I would ABSOLUTELY need:
That the isomorphic layout of Hapax can be changed to 5 semitones between rows. By reading the manual, it seems that it is currently fixed at 3 semitones between rows (which is a rather odd choice, if you ask any linnstrument player). 5 semitones between rows is by far the most popular format, but why not be inclusive and make it up to the user what layout to use? (6 semitones between rows is also quite popular.)
Thanks for reply,
Yes. I’m pretty sure that at somepoint its possible to even make custom layouts - seeing how well Pyramid has been updated!
Oh, and I should have mentioned: It is not just Linnstrument that defaults to using 5 semitones between rows. Also Deluge, Novation Launchpad, Native Instruments Maschine, Geoshred (ipad), Abelton Push, Bitwig and probably more.
5 semitones between rows, ie. a perfect 4th, is how the bass guitar and the lower 4 strings of guitars work as well, and I’d imagine is something that Hapax will need to support so that people don’t go running through the streets with pitchforks and torches 
Hi !
It’s not fixed, it’s a parameter of the Live mode:
Rotate encoder ③ to set the row jump.
While we’re on the topic of the Linnstrument, am I right from reading the manual that the Hapax will power the Linnstrument via its USB port? It doesn’t mention anything about a power spec for client devices. On the diagram on the main page it might be that the host and client MIDI ports are cross-labelled? I would normally plug the Linnstrument into the USB-A port, not the USB-B port. In the manual they appear correctly labelled.
Also, I know the Pyramid allows you to attach a foot switch to enable and disable recording for live MIDI looping. Is there a similar functionality on the Hapax?
Whoops.
Ah, excellent. 
Ive not used with the Linnstrument, but Ive been testing with an Erae Touch … and its been working very nicely 
Ive primarily been using (various) soft synths inside daws, mostly Ableton 11 and Bitwig…
oh, and also VCVRack which is starting to become a favourite of mine.
all working fine.
multiple channels - so I presume you mean can you have multiple MPE tracks.
yes, Ive had multiple MPE tracks, you need to assign them different hardware outputs… as each track uses all 16 channels - e.g. I can have tracks using DIN1-4, USB device/usb host
thats pretty much perfect for hardware !
but when using with a computer , it would be nice to have support for USB ‘ports’, so that you could sequence multiple mpe tracks thru the one USB port.
Ive raised this as a feature request to Squarp… so perhaps for the future.
overall, yes it works nicely for MPE.
currently its mainly about recording/playback, but Im looking forward to Squarp’s plans for per note editing … I think this will make it the first hardware sequencer with ‘proper’ MPE support !
Thanks for sharing! It looks like the control panel of an alien spacecraft 
What is the controller with the light patterns below the Hapax?
this is an Embodme Erae Touch
another great French product… amazed about the music tech coming out of France at the moment. 
digging out this old corpse, as I’m trying to get MPE to work and this thread seems fitting
Testsubject is the Roli Seaboard Block M and the MPE receivers are either Steampipe or Hydra, the Hapax is the brain and router in this setup.
Sound plays fine, so far, however I only get mono-pressure out of the Hapax not poly, which would be needed to fully play expressively with the controller. Has anyone experienced something similar, that their MPE passthrough/routing isn’t working as intended? Because, I couldn’t find any setting in the Hapax that I would flag as something responsible for this behaviour.
any ideas welcome 
Could this be related to Hapax not supporting PolyAT? Would that even affect MPE from the Roli passing through the Hapax?
That’s why I wanna ask around here what other ppls experience is with Hapax + MPE passthrough
if it is Hapax or Steampipe not accepting the Roli MPE data for example (also wrote to Erica but it’s a holiday now here)
With the Hydrasynth, it also needs to be set to receive aftertouch as MPE and not Poly or channel. Not sure if this helps.
both hapax and steampipe need to be in mpe mode. steampipe has a bug in original firmware that you need to set seaboard to use 7 voices instead of 8, but otherwise, as long as both are in MPE mode, should be fine. PolyAT is not used in MPE mode, as each channel just does regular AT on the channel of the voice.
Yes, as the previous user said, PolyAT MIDI messages are actually not part of the MPE spec, MPE uses channel aftertouch. You still get per-voice aftertouch because each voice uses a unique MIDI channel. There are a few synths out there that can also still respond to PolyAT messages when in MPE mode but the official MPE spec does not support this, PolyAT messages on MPE voice channels are prohibited.
This fact should cause no issues at all if your MPE controller and MPE-supporting instruments are configured properly. MPE controllers that have config options to allow PolyAT usually do so in order to allow some of their features to still be used with non-MPE instruments, and you should not make use of such options when using them as proper MPE controllers.
ah ok, the bug makes sense and I can’t regulate the Seaboard as it’s on loan (and they’re so dumb to only allow registered controllers to be used with the controller software)
Haven’t heard from Erica back, but that it shows Mono AT is still weird. The Hydra meanwhile reacts great and you have full Poly AT, when you route the seaboard via Hapax into it.
Also I think it’s self explanatory that in order to use MPE, you need to set stuff to MPE! 
