by Lasse Eilers | Approximate reading time: 2 Minutes
Best free plug-ins this week

Best free plug-ins this week: TesslaSE MkII, Dirty Spring and NANDroid  ·  Source: Variety of Sound, Gearnews


In this week’s collection of free plug-ins, we’re celebrating the return of a beloved freeware classic. We’ve also got a great spring reverb with an edge and an experimental synth. Here’s TesslaSE MkII, Dirty Spring and NANDroid.


As always, be sure to check our archives for many more free plug-ins!

Variety Of Sound TesslaSE MkII

Variety of Sound TesslaSE MkIIThe original TesslaSE plug-in came out sometime in the late 2000s, if I’m not mistaken, and garnered a cult following for its smooth analog saturation. If you’re one of the many fans, rejoice! We’re finally getting an update. TesslaSE MkII is based on the same tried-and-true concept, but with a slick new interface, improved gain staging and a few tweaks to the transformer/tube circuit modeling algorithm to make it even better. And it now runs in 64 bit. Now, how about a Mac version?

TesslaSE MkII is a VST plug-in for Windows (32/64 bit).

Get TesslaSE MkII here

Bedroom Producers Blog Dirty Spring

Bedroom Producers Blog Dirty SpringBPB has released Dirty Spring as a Black Friday freebie. It’s a cool little spring reverb plug-in with pre-delay, decay, tone and mix controls for adjusting the reverb’s character and effect amount. Interestingly, it also features a built-in bitcrusher for added grit and crunch and that classic 8-bit sampler effect. There’s also a kick button that mimics the effect of physically bumping into a hardware spring reverb. Great stuff if you’re into vintage, lo-fi sounds!

Dirty Spring is available for macOS and Windows in VST, VST3, AU and AAX formats.


Get Dirty Spring here

Fugue State Audio NANDroid

Fugue State Audio NANDroidHere’s an experimental synth with a delightfully geeky edge to it. According to the developer, NANDroid is a noisebox synth with four square wave oscillators feeding NAND gates – hence the name. Those gates then feed another gate. There’s also a filter, a bunch of modulators such as LFOs and a delay effect. NANDroid produces some pretty wacky, noisy sounds – if you’re into experimental sound design and unusual synthesis concepts, be sure to give this one a try.

NANDroid is a VST3 plug-in for Windows (64 bit).

Get NANDroid here



By loading the video, you agree to YouTube’s privacy policy.
Learn more

Load video

Image Sources:
  • variety-of-sound-tesslase-mkii: Variety of Sound
  • bpb-dirty-spring-01: Bedroom Producers Blog
  • fugue-state-audio-nandroid: Fugue State Audio
Best free plug-ins this week

How do you like this post?

Rating: Yours: | ø:

Leave a Reply

Your email address will not be published. Required fields are marked *