Virtual JV: free Roland JV-880 emulation
- KVRAF
- 24447 posts since 7 Jan, 2009 from Croatia
If you had an older version installed, you need to kill the AU registry prior to attempting to load it in a DAW, as previously mentioned in the thread.
This will continue to be required until an installer is sorted out.
This will continue to be required until an installer is sorted out.
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- KVRist
- 219 posts since 16 Nov, 2022
I just downloaded and installed the latest version. Great EvilDragon, no more wasted space and the waveform listings are there.EvilDragon wrote: Sun Aug 31, 2025 8:26 am If you had an older version installed, you need to kill the AU registry prior to attempting to load it in a DAW, as previously mentioned in the thread.
This will continue to be required until an installer is sorted out.
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- KVRist
- 32 posts since 9 Dec, 2016
I downloaded the last version and no more issue with the AU validationEvilDragon wrote: Sun Aug 31, 2025 8:26 am If you had an older version installed, you need to kill the AU registry prior to attempting to load it in a DAW, as previously mentioned in the thread.
This will continue to be required until an installer is sorted out.
- KVRAF
- 24447 posts since 7 Jan, 2009 from Croatia
Not that I know of. Either way it wouldn't help you here.
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- KVRist
- 32 posts since 9 Dec, 2016
So, if sysex loading would be implemented, that will an access to many user's presetsEvilDragon wrote: Thu Sep 04, 2025 2:30 pm Not that I know of. Either way it wouldn't help you here.
- KVRAF
- 24447 posts since 7 Jan, 2009 from Croatia
That is already tracked on GitHub, but no promises if or when it will happen.
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- KVRer
- 29 posts since 17 Jun, 2006
Hello, congratulations and many thanks to everyone involved in the development of this project! VirtualJV feels and sounds like having back the beloved JV (the Roland Cloud JVs definitely didn't fulfill that).
Two questions to compare with other user experiences:
1.) One instance consumes 25% CPU power in idle mode, so three consume 75%, and that is much too much to work with multiple instances. It's as if the thing is constantly computing, even when no sound is playing. Is this due to the original Roland binaries or the emulation superstructure? Can this be improved, or is it beyond your control?
2.) In previous versions of VirtualJV, you could simply step through the patches of a loaded bank using the cursor keys. In the current version, each patch is loaded separately via SysEx dump. This has two disadvantages: patch browsing is no fun anymore, and the focus for the cursor keys falls back to the bank selector after each patch change, thus rendering patch browsing using the up-down cursor dead. Is this known, and will it stay this way?
(tested as VST3 plugin in Reaper)
Two questions to compare with other user experiences:
1.) One instance consumes 25% CPU power in idle mode, so three consume 75%, and that is much too much to work with multiple instances. It's as if the thing is constantly computing, even when no sound is playing. Is this due to the original Roland binaries or the emulation superstructure? Can this be improved, or is it beyond your control?
2.) In previous versions of VirtualJV, you could simply step through the patches of a loaded bank using the cursor keys. In the current version, each patch is loaded separately via SysEx dump. This has two disadvantages: patch browsing is no fun anymore, and the focus for the cursor keys falls back to the bank selector after each patch change, thus rendering patch browsing using the up-down cursor dead. Is this known, and will it stay this way?
(tested as VST3 plugin in Reaper)
- KVRAF
- 24447 posts since 7 Jan, 2009 from Croatia
1) Emulator is literally emulating the DSP and the microcontroller in this synth. It is going to consume more CPU than your typical plugin. Consider that these devices were created with the intent of always processing everything basically full tilt , regardless of the amount of voices being played. I am not sure how much room there is for improvement, but I wouldn't count on it.
2) It is known. Sysex dump will stay because this allows parameter editing by the user (temporary patch buffer is being used). Arrow keys not working in the patch list is a separate issue that will need to be fixed - no timeframe on that.
2) It is known. Sysex dump will stay because this allows parameter editing by the user (temporary patch buffer is being used). Arrow keys not working in the patch list is a separate issue that will need to be fixed - no timeframe on that.
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- KVRer
- 29 posts since 17 Jun, 2006
Thanks for clarifying. I'm interested in comparing my stated numbers (25% CPU per instance in idle mode) with those of other users to see how much these numbers can vary on different systems!
- KVRAF
- 24447 posts since 7 Jan, 2009 from Croatia
I have about 20% RT CPU in Reaper on my (by now quite old) i7-6700K@4.3 GHz quadcore.
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- KVRAF
- 9913 posts since 15 Sep, 2005 from East Coast of the USA
Yes!soundman007 wrote: Thu Sep 04, 2025 10:38 amI just downloaded and installed the latest version. Great EvilDragon, no more wasted space and the waveform listings are there.EvilDragon wrote: Sun Aug 31, 2025 8:26 am If you had an older version installed, you need to kill the AU registry prior to attempting to load it in a DAW, as previously mentioned in the thread.
This will continue to be required until an installer is sorted out.![]()
The waveform names was a feature that I (and probably some others) had requested and I really appreciate that addition.
I noticed a couple things when I was trying it out.
There are extra little characters next to some of parts of the Tone edit screens.
On the default patch - JV Strings, it shows the wrong waveform (ACPiano1), and none of the tones are enabled with the checkbox. It seems to play and sound normal, but I just wanted to mention those issues.
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- KVRAF
- 20874 posts since 22 Nov, 2000 from Southern California
This is fixed now.gregsteel wrote: Sat May 17, 2025 5:17 pm Hi I'm blind and a windows user I don't notice anything just the bug on the house collection where vintage strings is the last patch that will load.
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- KVRist
- 219 posts since 16 Nov, 2022
No extra characters in my case: MacMini M2Pro, Sonoma 14.7.4, Logic 11.1.2Examigan wrote: Thu Sep 04, 2025 10:31 pmYes!soundman007 wrote: Thu Sep 04, 2025 10:38 amI just downloaded and installed the latest version. Great EvilDragon, no more wasted space and the waveform listings are there.EvilDragon wrote: Sun Aug 31, 2025 8:26 am If you had an older version installed, you need to kill the AU registry prior to attempting to load it in a DAW, as previously mentioned in the thread.
This will continue to be required until an installer is sorted out.![]()
The waveform names was a feature that I (and probably some others) had requested and I really appreciate that addition.
I noticed a couple things when I was trying it out.
There are extra little characters next to some of parts of the Tone edit screens.
- KVRAF
- 24447 posts since 7 Jan, 2009 from Croatia
That seems to be a font related thingie. It's supposed to be the Unicode right arrow, alas...
EDIT: Found the issue that caused this, I think. Next build (in about 20 minutes) should be fine, hopefully.
EDIT: Found the issue that caused this, I think. Next build (in about 20 minutes) should be fine, hopefully.
Last edited by EvilDragon on Fri Sep 05, 2025 9:20 am, edited 1 time in total.
