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Moog One has this feature. Turning on the Unison Mode lets you choose 2-16 voices per note. Being able to play chords with 2-3 voices per note is very useful.

this will be very helpful. Thanks Laurent.

I would love all the Riverkey parameters to be accessible directly on the synth.
Opening the Riverkey editor on a Mac is a huge headache. And it doesn't always work.
I don't need to create profiles, I just need to manage all the options, like CV Clock etc.

Laurent posted a comment on Gearslutz.com about a possible control expander for The River.
How would it look like? I'd love it to include all the missing knobs and buttons that are hidden in keyboard shortcuts and menus.
Things like: easier bank/preset access, arpeggiator and sequencer buttons, Triko and FX controls, and some of the menu hidden gems.

Are the extra shortcuts documented somewhere?

One thing to watch out for, though, are MIDI feedback loops between The River and your DAW. This is especially true if you have more than one of The River’s three possible MIDI connections going at one time (USB Key, USB Panel and DIN MIDI).

Yes, a MIDI feedback loop can cause a freeze on The River.
Another reason can be a faulty USB hub. Is The River plugged directly to your Mac?

I've never had The River freeze with a Mac. I'm on Catalina, Nuendo 10.

It looks like TUNE:Autotune_Voices cannot be started when SYSTEM:LOCAL OFF is ON.

[one]

Let me start by saying that The River has the most counterintuitive MIDI architecture I know of, and the English manual doesn't exactly help.

I have found 4 ways to connect to a DAW.

OPTION A:
- connect with one USB cable, from the USB PANEL output on the back of The River.
- set up one Riverkey layer
  L1    active: ON
         source: River
         destination: River
SYSTEM > Local Off: ON (to avoid double notes)
SYSTEM > Dump To USB: YES (to transmit knob movements)

PROs: setup with only 1 layer, transmits and receives knob movements
CONs: your DAW can only control The River, but not other synths connected to it (neither with MIDI nor CV)


OPTION B:
- connect with a pair of MIDI cables
- set up at least two Riverkey layers
  L1    active: ON
         source: River
         destination: MIDI
  L2    active: ON
         source: MIDI
         destination: River
  L3    active: ON (for CV synths)
         source: MIDI
         destination: CV destinations

SYSTEM > Local Off: OFF

PROs: your DAW can control other synths connected to The River (MIDI THROUGH or CV)
CONs: slightly more complex setup, can't transmit knob movements


OPTION C:
- connect with one USB cable, from the USB KEY output on the back of The River.
- set up at least two Riverkey layers
  L1    active: ON
         source: River
         destination: USB
  L2    active: ON
         source: USB
         destination: River
  L3    active: ON (for other MIDI synths)
         source: USB
         destination: MIDI
  L4    active: ON (for CV synths)
         source: USB
         destination: CV destinations

SYSTEM > Local Off: OFF

PROs: your DAW can control other synths connected to The River (MIDI OUT or CV)
CONs: more complex setup, can't transmit knob movements


OPTION D:
- a mix of OPTION A+B or A+C

PROs: transmits and receives knob movements, and your DAW can control other synths (MIDI THROUGH or MIDI OUT or CV)
CONs: very complex setup, with two sets of cables



Other considerations:
The word "channel" in the manual sometimes stands for "River Channel" or "MIDI Channel". Likewise, "USB" may mean "USB KEY" or "USB PANEL".
"Dump to USB" should not be confused with the SYSEX Dump commands (Current, All Single, All Multi, The River). It means "transmit the panel controls (knob movements) via the USB PANEL out", it's not a data dump.

I created the following profile, where L4 CV goes to CV9 and L4 Gate goes to GT1.
After sending the Sysex it works and the Riverkey displays the L4 CV output assignment as 9/1.

After reboot, the Riverkey changes L4 to 6/1. After loading the profile again from the Global menu, it changes to 7/2.

please help.

an additional tip:
it's also possible to control the speed or volume of the LFO CV with the mod wheel. However for now, this requires creating a Riverkey profile on a PC.
Since we don't have an analog knob for the LFO CV, the mod wheel is a comfortable option.

[after]

In normal operation, the [S+Pedal_In] knob let's you modulate the speed or amplitude of the DLFO with an Expression Pedal or External CV. ....but, when you physically connect CV OUT1 (on the back of The River) with CV IN, you can use the Riverkey LFO CV to modulate the DLFO!

For it to work, you'll need to:
- connect CV OUT1 to CV IN with a patch cable
- turn the LFO CV to Active (LFO Setup on the Riverkey screen)
- choose LFO CV Shape (other than 0)
- set LFO CV Level to 100

this is important: after you've done the LFO setup, you'll have to perform the controller calibration routine.
(see Chapter 9. in the manual -- Calibration of the physical controllers)

Now, you can use the [S+PEDAL IN] knob to modulate either the amplitude and/or frequency of DLFO (depending on the position of the [AMP/RATE] knob)

P.S. A question to Laurent:
What voltage range is supported by the CV IN?
Can it handle the full +/- 10V output from LFO CV?

It would also make sense to have a nagative-only voltage for DLFO:AR_DOWN. Otherwise, it starts and ends above the note, when modulating the oscillators. What do you think?

SIN and TRI with symmetrical waveforms work great.

thanks, did some more investigating of my own and I found a repro for a voice allocation bug.

- change MODE to ALL
- select Channel 1
- allocate Voice 1-8 to Channel 1
- select Channel 2
- allocate Voices 5-8 to Channel 2
- go back to Channel 1

Channels 1 and 2 should be playing at the same time, but they are not. It takes a lot of random channel and mode switching to make it work.

It is not a bug, it's a choice When waveform of chorus 2 is RND or TAP, no period can be defined and no phase rotation can be calculate for CH1 and CH3.

(When CH2 is the Master) for RND and TAP, one would expect CH1 and CH3 to produce their own RND and TAP. Like when they do, when they are independent. RATE, DELAY, AMPLITUDE should be left blank.

(When CH2 is the Master,) S&H should work as other waveforms, with RATE shifting the steps.

And when CH2 is a master for CH1 and CH3, amplitude and delay for CH1 and CH3 are the same than CH2...Is this case Delay change the Phase 

actually it's not the case. DELAY doesn't do anything. I don't hear any phase changes.
BTW, it would make more sense to use the DELAY knob rather than the SPEED knob for changing phase. The SPEED knob should be blank, since the speed is locked.

Okay for write "CH2" and "Phase"' for  amplitude and delay where Waveform is "CH2"

I'm afraid I don't understand what you mean by that...