At first, I neglected the Roland AIRA EFX series. Four digital effect for the Eurorack format all in 21hp casings. So you had to get two of them, or all four, to end up with an even hp. Surely, if you had a Harvestman module with odd hp you’ll be fine too… But I don’t. So. No luck for me.

Today I have three; two Bitrazers and one Scooper. Why two Bitrazers, you might wonder? Aren’t they stereo? Yes, they are. In fact all AIRA EFX are 24 bit, 96kHz internally with high resolution knobs. And in stereo.

I first got a Bitrazor and a Scooper, to try out the concept of digital effects. I had the option of getting the Torcido as well, but I missed out on it during the “blowout” sale my local dealer had. So after playing with the Bitrazor and Scooper I went back to get the Torcido (the Demora was long ago sold out) but the Torcido had gone too. So I got a second Bitrazor which I’m going to put a new label on and call Miscalizer. It will probably never be used as a bitcrusher and sample reducer, since I already have one for that.

— “Uhm, why two then?” you might wonder full of curiosity and perhaps leaning towards that I’ve recently caught a mental illness or just slipped, hit my head and gone slightly mad.

Because! Uhm. Because of reasons! And the reasons are the following:

The versatility of the AIRA EFX are amazing. They can have six additional virtual modules, and there are currently 31 to choose from, and you don’t have to use the core processing unit, like for example the Bitrazor, internally at all. Looking at the screenshots below I’ve patched both a Dual AD with CV controllable attack and decay and a switch for reversing the polarity. And also a SuperSaw oscillator while not using the core of the module. It’s just sitting there occupying two precious slots for other modules. Links to the presets are to be found at the end of this post.

Dual AD to the left and the SuperSaw patch to the right.

They have 8 (yes, eight!) inputs and two outputs. So while there’s room for awesome flexibility they are at the same time slightly limited. Yes, I admit that I’ve already run into situations where I’d like to have more than two outputs but that’s life. And for roughly €50 each — you can’t really complain, can you? The inputs are CV input capable of handling audio rate which can be routed to switches for trigger and toggling functions if you need.

I know they’ve been around for quite a while, but now is the time to pick up a couple of them rather cheap before more people understand the real potential they actually have got.

Links to the patches:

Enjoy! And go make your own now :)