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Synth (Modular) Plugin by Applied Acoustics Systems
Tassman by Applied Acoustics Systems is a Virtual Instrument Audio Plugin for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, an RTAS Plugin and an AAX Plugin.
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Overall: 1293   993   1269

30-Day: 1457; 7-Day: 1927; Yesterday: 1855

Tassman is a rich modular sound synthesis environment based on physical modeling. It brings together highly realistic emulation of acoustic instruments, analog and FM synthesizers, loop processors, and crazy hybrid creations simply not possible by any other means. Tassman is both an impressive collection of unique synths and effect processors, and a tightly integrated environment which lets you customize patches in any way you wish. Great sounds, complete control, and sound design power - that's what Tassman is all about.

Feature Highlights:

  • Polyphonic modular synthesizer and sound design environment.
  • Entirely based on physical modeling for outstanding sound quality.
  • Huge synth and effect library - more than 50 synths and 1000 presets.
  • Modules library for customizing or creating synths - effects, envelopes, filters, generators, inputs, outputs, MIDI, logic, mixers, resonators, selectors and sequencers.
  • Generators and resonators include acoustical objects - flute, mallets, organ, plectrum, beams, marimbas, membranes, plates, strings and tubes.
  • User expandable module library - reuse, organize and simplify patch building.
  • Unlimited modules per patch.
  • Internal audio recorder to capture performances on the fly.
  • Integrated browser, browser filters and locate function for easy navigation and organization of Tassman elements.
  • Triggered playback and record for perfect loops.
  • Import/Export functions for easy sharing of synths and effects.
  • Unlimited Undo/Redo capability.
  • Drag and Drop capability between Tassman elements.
  • Audio bit-depth and sample rates up to 24-bit/192kHz.
  • 32-bit floating point internal processing.
  • Real time calculation of sound - no samples.
  • Simultaneous operation of multiple MIDI ports and user defined MIDI maps.
  • MIDI automation and program change support.
  • Supports all standard plugin formats.
  • Full audio and MIDI hardware support.
  • Standalone operation - no host application required.

Latest User Reviews

Average user rating of 3.88 from 8 reviews

Reviewed By Q9000
December 7, 2020


* 2020: still unique sound in a modular system.

* allows to model physically impossible instruments, such as a pluck hitting a metal plate which feeds into other signals which feeds int the same metal plate etc.

* number of modules in a design just limited by CPU resources.


* cumbersome UI.

* some bugs/problems which probably won't get fixed.

* no Linux support (no big issue).

* last update was in 2015.

Bugs/Problems I encountered:

* samples of the sampler module need to have the same bitrate as the plugin is using, this is annoying.

* I couldn't figure out how to go back in sub-modules without jumping back to the overall design of the instrument.

The program runs fine in 64-bit VST DAW's, which is great.

Read Review

Reviewed By hivkorn
March 21, 2017

AAS Tassman 4


  • Endless possibility .
  • Pretty simple to patch.
  • Simple to understand and tutorial to explain for beginer...
  • Pretty stable (VST version OS X 10.12.3).
  • You can chain sequencer.
  • Boost your creativity.


  • The bridge for 64-bits version !!!! I want a real 64-bit version .
  • I want a GUI resize.
  • A few bug (but it don't crash the daw).
  • The reverb & delay algos are not amazing.
  • Warning using the filter, it scream very loud very quickly.
  • The price !.


AAS staff is reactive .

You need internet to autorise your copy.

I hope a V5 in the futur, this plugin is a real gem.

Read Review

Reviewed By tommyzai
December 3, 2012

Tassman by Applied Acoustics Systems is an amazing virtual analog synthesizer. This thing is a monster! I don't think there are any other physically modeled modular synths out there like this one. It's truly unique in look and sound. How can this plugin not make the top 10 VSTi list? The interface is simple, user-friendly, and fun. It's color coded to keep things neat and clean. There are lots and lots of great presets that are easy to tweak, but it's also fast and fun to construct your own instruments. The best part about Tassman is the sound — truly amazing, responsive, and as another reviewer called it. .. "MUSICAL." I highly recommend this plugin for designers, players, and producers of any genre!

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Reviewed By ozmoz2008
December 22, 2009

This synth often pass under the radar, but I really don't understand it. It is truly amazing, the sound is very expressive.

In fact I just rediscovered this synth because of the latest upgrade they made.(today in fact)

So Overall, the GUI is not that fancy, it's not an imitation of a hardware synth, but it sounds so much better than some other VSTs that look like hardware synths, that I don't really get it when people are complaining about the GUI. It maybe not a synth that is easy to mastered for programming, but it doesn't make it a bad GUI either. Everything is right there in your face.

The preset sounds are awesome. If you are the kind of person looking for inspiring sounds right out of the box, this is the synth for you.

The VST sounds are very usable in a working situation. I do lots of soundtracks, and this synth with it's expressiveness is able to fulfill a lot of my needs. It's really very fun to compose with these sounds. There is a depth that is obvious, and some overtones qualities that are not common in many Synth today.

I didn't had the chance to read a lot the documentation, but it is quite complete from what I saw. If you have more questions just send them an email, they have a very very good support. I have written to them often and they always respond within a day or 2.(mostly within 2-3 hours). They are also very polite and know how to serve you well.(not the case with all companies)

I bought the synth with the complete bundle, so for me it was a very affordable expense. Totally worth!

I had stability problems before the new updates on Cubase 5.1, but since the last 2 updates, it is really stable, no more problems.

This synth should be in the top 10 VSTs in the reviews, very hard to compete with when it comes to sound, and for someone like me who depends a lot on the sound quality I can get to please my clients, this is the kind of VST that does the job, every time!

I hope that AAS continue to do some other great synth like Tassman, for me it is a big 2 thumbs up !Read Review

Reviewed By spmadmin
April 25, 2004

I'm not supposed to use this word, but Tassman's UI sucks --- especially the builder is really, really bad. It is such a pain to connect modules and work with (sub)patches. Why not use bigger icons for modules/subpatches and write a label on the in-/outlets. Changing the number of inlets or outlets of subpatches is not immediately reflected in other (subpatches) and...well, so many other annoying issues. Work hard on the builder, AAS, and you will end up with a wicked product, but for now it is just...so poor. Also, the tree browser is not a suitable interface for accessing both instruments, presets, performances, modules and subpatches. Please rethink this --- load instruments as files, access modules and subpatches in toolboxes (as in e.g. Visual Studio), etc. The keyboard shortcuts are too few --- and do not cover what you really need (e.g. show/hide browser). The look and feel of the modules in the player is actually quite good, although not visually perfect --- and too big. It should be possible to select other colors and styles for the modules.

The sound is IMO the best analogue/physical emulation around...only rivalled by Arturia's VST instruments. I love this sound --- combined with good live modulations (wheel, breath) this instrument makes me want to play and play. Arturia's Minimoog in the only other VSTi that feels as expressive as some of the Tassman instruments.

I think Tassman has almost all the modules you need to create exiting synths. I does need a better sample player, though.

Given the non-intuitive UI, the documentation is insufficient. Not misleading or badly written, just insufficient, especially on the builder and the modules.

Some awesome synths among the intruments, some of them with a good deal of presets...some presets are even really good. BUT --- not enough. To show of the capabilities of Tassman, more synths and more presets with each synth should be provided. Also, they sould be better organized and described.

Customer support
I have not personally used AAS suppport, but I have been following their activity/repsonses on KVR and elsewhere. Also, I have to say that the slow evolution of the product indicates a lack of user responsiveness...combined with the upgrade policies so far, it drags down on this rating.

Value for money
I got Tassman 3 for $130, with free upgrade to version 4. That was OK, but the full retail price is absurd given the current state of the product.

Rock solid as standalone, but it has crashed in Cubase SX 2 a few times --- therefore I would be very reluctant to use it in a project, despite its very good sound.

All in all...
The sound is just wonderful, but the UI and the (in)stability in Cubase SX turns me off. I am happy to have this VST in my collection, as I think I will play with it often, but I doubt that I will use it in a project until after a few updates. I'll stay on the upgrade path, though.

Peace...Read Review

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Comments & Discussion for Applied Acoustics Systems Tassman

Discussion: Active
30 March 2013 at 2:55pm

I would agree with most people on here that the sound you get from Tassman is second to none and I rate it very highly, but the major problem with it is that, up til now anyway, it is not compatible to be automated within Ableton Live.

I'm actually hoping someone gets back to me to tell me this has been addressed, I would gratefully stand corrected.



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