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malletkat midi sound source software

dustingetz 24 June 2026

Hello, I am looking to upgrade my malletkat sound and am looking into laptop midi setups so that I can use proprietary samples instead of the gigkat sound modules endorsed by Alternate Mode.

Q1: What samples do you use? (Some appear to require a much heavier laptop than others)

Q2: What software midi sampler application do you use to play these samples?

Q3: What make/year laptop do you use to run the player without audio glitches?

Q4: What usb midi interface do you use to connect the malletkat to the laptop?

 

Problem: I am experiencing latency/sound glitch issues in my laptop setup. I have a 2017 macbook pro (16 GB) and also a 2025 macbook Air (24GB), the 2017 can barely load the samples and playback is very scratchy like it can't keep up. The 2025 was better but the playback still had glitches, and increasing buffer size from 512 samples (10ms) to 1024 samples (21ms) helped a bit but the extra latency drives me crazy and the results were still not perfect, in fact I Just tried it again and the results are quite poor. I am using DecentSampler (free). I am fine to spend some money on the right software application but it needs to work. Also, these apps sure are finnicky!

 

P.S., as an appendix I will dump my collection of relevant links here because this knowledge was difficult to find in 2026:

 

Some URLs to vibe sound samples, for others, since they are hard to find:

These are all beautiful sounds

 

Sound sampler applications:

 

Here is the USB Midi interface I use to connect the malletkat to my laptop: Roland UM-ONE Mk2 USB MIDI Interface https://www.amazon.com/dp/B00967UN50 . It has two modes, "PC mode" which needs a driver, and "tab mode" which doesn't. I only got the tab mode to work with my macbooks. (I wonder if this is part of the problem? What MIDI interface do you use?)

 

Here are some hardware sound modules that are plug-n-play without a laptop:

Comments

IndianaGlen Fri, 06/26/2026 - 15:57

I'd like to be able to bang down your list; however, I'm not too far down the MalletKat rabbit hole, hopefully some of this will help.    I'll give you a rundown on where I am with all this.  

I have an older malletkat and  GigKat 2, and I'm not happy with the vibe samples either.  I use it because it’s easy, the amateur big bands I play in think it sounds fine, and even if I do use a laptop for better sound(s) I'll keep the GIGkat as a backup.  I have an K&K setup on an M55 I use more often.  

I have bought some software and hardware and I have it on the back burner to go down this to put all the puzzle pieces together.  It’s been a couple of years since I’ve touched all this so some of my assumptions may have to be updated. 

Here’s what I have: 

2019 Macbook Pro

Motu M4 (Mario at Alternate Mode recommended this interface a few years ago)  

Soniccoture Vibraphone

Kontakt 

Ableton Live 11 Standard 

Next steps is to update everything and get the Kat working with the software.  

As a side note, I’ve always liked the mallet sounds on the Kurzweil synth.  (you’re probably aware that some Kurzweil engines were built into some of the Kat product years ago)  I wondered if it would be easier to get the smallest used PC3 or 4 Kurzweil keyboard or better yet a rack and run the MalletKat through that.   

Bottom line, I share your pain. If there’s something I can do on my end let me know.  I’ll check back in the next few days.  Due to family commitments etc. I may or may not have time to mess with things on my end.  

—Indiana Glen 


 

dustingetz Sat, 06/27/2026 - 08:49

Thank you Indiana for the additional info I will look into Ableton Live, the Motu M4 and the Soniccoture samples! If I am not mistaken, the Gig Kat 1 is a Kurzeweil synth (it might be custom for malletkat). I like the GigKat 1 "vibraphone" sound, it is simple and viable and sounds good in the 5th octave.

Here are my additional learnings, after spending two frustrating days fiddling and spending $400:

  1. Only the Kontakt sound engine can play the mallet samples without audio glitches or stuck notes, it plays perfectly on the 2017 macbook pro 16GB. The free Decent Player had both audio artifacts and IIRC also stuck notes, even on the 2025 macbook air, it was unusable.
  2. The free Kontakt player is insufficient, it only loads plugins available through their app store ecosystem, and none of the mallet plugins are available through the store they are all third party. Support for custom plugins requires Kontakt COMPLETE tier, I had to subscribe to the $50/mo tier (2 week free trial) for the player to be able to see and load the plugins. I think instead of $50/mo i can pay $500 once, which I will do if I decide to keep this setup.
  3. The AcousticSamples library uses a bundled sample player "UVI Workstation 3" instead of a Kontakt plugin. This bundled player is buggy and notes frequently get stuck (never happens in Kontakt). That makes these samples unusable on malletkat. That's too bad because this was a clean, simple vibraphone sound. Many of the proprietary sounds are gorgeous but a bit overbearing.
  4. the Ketron SD1000 sounds are perfect, this is the ideal solution I wanted, if only it was still available. If I ever see a SD1000 on ebay I will scoop it up. In the video, Mario rotates through several sounds and they are all gorgeous, and note also he is playing on 4 octaves; many of the software sounds I listed in OP cut off at 3 or 3.5 octaves (e.g. NTONYX, Cool Vibes).
  5. Note about custom hardware sounds: They are definitely simpler (plug-n-play once configured). But we still have to fiddle with programming the MalletKat "user kits" to match the sound source, which still needs a laptop, definitely an advanced use case requiring a weekend of reading PDFs and installing apps but once you have it setup you no longer need the laptop. Note I have not actually done this yet, the gigkat 1 to 2 upgrade required me to flash the malletkat midi programming with a .sysex driver file, for a third party sound source we may have to build the midi programming ourselves, there is an app for it.
  6. For 5 octave kat users, I found that only the "Soundiron Vibraphone jazz" samples are extended into 5 octaves AND sound good in the bass octave (I may need to eq the bass up a bit as the octave seems quieter). I think they are using DSP to do this so the sound is non-native. One of the other sounds I tried did support the 5th octave but the overtones in the upper frequencies were distorted with DSP artifacts to the point of uselessness.

 

Todo list:

  • Ableton Live - figure out the minimum package needed to play samples
  • get the Gentle Vibes package I bought working, it seems to require Ableton Live not Kontakt.

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