# First post: big ask: any chance of Hz/v on Hapax? **URL:** \ **Category:** Hapax\ **Created:** [October 1, 2023, 8:07pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158 "2023-10-01T20:07:40Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![cpaxton](https://squarp.community/letter_avatar_proxy/v4/letter/c/958977/32.png) [@cpaxton](https://squarp.community/u/cpaxton)\ **Post date:** [October 1, 2023, 8:07pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/1 "2023-10-01T20:07:40Z")
Hello there, I’m new to Hapax and Squarp in general. I picked up a Korg MS-20 original and I reckon the Hapax would be a great sequencer for it, if it could do Hz/v. I know there are work-around’s for the MS-20 using frequency to voltage, however its not very reliable. Maybe its there already and I just don’t know how to set it up? Cheers!, C ---
**Author:** ![olafer](https://squarp.community/letter_avatar_proxy/v4/letter/o/e47774/32.png) [@olafer](https://squarp.community/u/olafer)\ **Post date:** [October 5, 2023, 9:36am UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/2 "2023-10-05T09:36:40Z")
Hey, same problem here, I have tried to send cv values from Hapax to my old ms-20, but in spite some notes are tunned most of them are not. I’ve tried both options 1 and 1.2 v. Any ideas? Thanks! Fer ---
**Author:** ![sydilaxe](https://squarp.community/letter_avatar_proxy/v4/letter/s/eb8c5e/32.png) [@sydilaxe](https://squarp.community/u/sydilaxe)\ **Post date:** [October 5, 2023, 1:29pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/3 "2023-10-05T13:29:38Z")
Well, the Hz/V scaling on the Pyramid never worked properly, so I can’t imagine it translating well to Hapax. ---
**Author:** ![Loz](https://squarp.community/user_avatar/squarp.community/loz/32/55_2.png) [@Loz](https://squarp.community/u/Loz)\ **Post date:** [October 5, 2023, 8:01pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/4 "2023-10-05T20:01:58Z")
I also have an old MS-20, and I have been told that it should be in the next version, 1.20. ---
**Author:** ![olafer](https://squarp.community/letter_avatar_proxy/v4/letter/o/e47774/32.png) [@olafer](https://squarp.community/u/olafer)\ **Post date:** [October 6, 2023, 7:56am UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/5 "2023-10-06T07:56:20Z")
ohhh I can´t wait for it 🙂 ---
**Author:** ![intervallux](https://squarp.community/letter_avatar_proxy/v4/letter/i/9d8465/32.png) [@intervallux](https://squarp.community/u/intervallux)\ **Post date:** [October 9, 2023, 4:54pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/6 "2023-10-09T16:54:22Z")
This is great to hear. I’ve been using my old Elektron analog four to sequence it via CV. W/ the hapax, I’ve gone back to using midi for the time being, but I miss the expressiveness/tightness that CV offers. ---
**Author:** ![olafer](https://squarp.community/letter_avatar_proxy/v4/letter/o/e47774/32.png) [@olafer](https://squarp.community/u/olafer)\ **Post date:** [February 10, 2024, 3:14pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/7 "2024-02-10T15:14:50Z")
Hello again, since the great new update (2.0) now there is the possibility to calibrate the 4 cv outputs, but the calibration is only over the C notes, thus the other notes of the scale still are out of tune in my old MS 20. Or am I missing something? Thanks, all the best. ---
**Author:** ![tracert](https://squarp.community/letter_avatar_proxy/v4/letter/t/b9bd4f/32.png) [@tracert](https://squarp.community/u/tracert)\ **Post date:** [July 11, 2024, 12:25pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/8 "2024-07-11T12:25:27Z")
Is hertz per volt an option yet with the Hapax? I’m very interested in replacing my Deluge with the Hapax, but I have a couple of Yamaha CS synthesizers that need hertz cv! ---
**Author:** ![tracert](https://squarp.community/letter_avatar_proxy/v4/letter/t/b9bd4f/32.png) [@tracert](https://squarp.community/u/tracert)\ **Post date:** [July 20, 2024, 11:26pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/9 "2024-07-20T23:26:57Z")
I assume it’s OK to share information sent to me by Squarp. They’ve said that hertz per volt is in the works, but that S-Trig and gate signal \>5v are not possible on the hardware. 🙂 ---
**Author:** ![squarpadmin](https://squarp.community/user_avatar/squarp.community/squarpadmin/32/2555_2.png) [@squarpadmin](https://squarp.community/u/squarpadmin)\ **Post date:** [February 5, 2025, 10:45am UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/10 "2025-02-05T10:45:12Z")
Hey everyone, I was circling back on this post, and just wanted to say that Hz/V has been enabled in the 2.10 Hapax OS. It should work fine, as it’s been tested by a few of the happy owners of MS20, but I’d be glad to have a few more confirmations on this. Cheers! ---
**Author:** ![snk](https://squarp.community/user_avatar/squarp.community/snk/32/419_2.png) [@snk](https://squarp.community/u/snk)\ **Post date:** [December 1, 2025, 3:37pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/11 "2025-12-01T15:37:02Z")
Hello Happy Hapax user here, and happy owner of a MS20. I just tried to use HAPAX today to control my MS20. It kinda works, but the tessiture ( scale amplitude) is not that great yet : it tracks Ok on 2 octaves only, but above or below that, it goes out of tune rather quickly. It seems that the range is too narrow. For instance : - If I hit a middle C, and tune the MS20 accordingly. - Then I play the upper C one octave up : it’s fine; - then the upper C one octave above, it plays a B. - If I try the lower C (one octave below the original one), it plays a C# Is there any way to fine-tune the range so that we could have a 4 octaves range? (For what it’s worth, and in comparison, [CVOCD](https://six4pix.net/product/cvocd/)manages to track 4 octaves and stay in tune) ---
**Author:** ![Loz](https://squarp.community/user_avatar/squarp.community/loz/32/55_2.png) [@Loz](https://squarp.community/u/Loz)\ **Post date:** [December 3, 2025, 1:49pm UTC](https://squarp.community/t/first-post-big-ask-any-chance-of-hz-v-on-hapax/10158/12 "2025-12-03T13:49:41Z")
I encountered the same issue when it first was added, and unfortunately I believe this is a hardware limitation on the Hapax. Here is the reply I had from Squarp: > I think it’s a problem with the limited output voltage of Hapax (-5V to 5V). > > On the internet, I can’t find what range the MS20 is supposed to get (for example 0V to 10V) and what range your Kenton is outputting when in Hz/V mode. But I think its range may be larger and more adapted to the MS20. > > Below you can see the Hermod+ specification for Hz/V (soon to be added in the Hapax user manual) : > > ![hzv.png](https://zxc.externet.uk/?_task=mail&_action=get&_mbox=INBOX.Music&_uid=581&_token=WLUMmdcY4RRJMMdNoGC3VFzeEMk4lrWe&_part=2&_embed=1&_mimeclass=image) > > So if the MS20 doesn’t accept negative voltages, the range you can finally use with Hapax is something like F7 to F8