The extreme quality and authenticity of Roland’s AIRA Series are achieved by a Roland-developed technology called ‘Analog Circuit Behaviour’ – or ACB.  Here’s a brief explanation on why ACB is such a great thing.
Some Samples Are Okay!
ACB is 100% Virtual Analog Modeling (VA for short) and contains no samples.  Okay, I’m lying.  The only samples exist on the TR-8 and are reserved only for the ‘TR-909’ cymbals.  If you are unfamiliar with a Roland TR-909, just know that you wouldn’t want it any other way.  To see what I mean, watch this!

Meticulous Modeling
acb5ACB is not your normal run-of-the-mill VA.  For AIRA and ACB, our engineers went A LOT further than the norm to recreate the analog experience in digital form.  We opened the original Roland instruments that inspired the AIRA series (TR-808, TR-909, TB-303, SH-101 . . . etc.) and meticulously analyzed each of their analog components and circuits.  The findings were then coded digitally to create identical models of those components and circuits.  When these digital models are put together, like their analog cousins, the results wield a wonderful flurry of wave form goodness and silky smooth sound animations.  Every nuance is true and clean of any ‘stepping’ or digital aliasing.


I want to emphasize that our engineers went A LOT further with our ACB modeling.  Know that ACB is achieved at 32 Bit/96 kHz digital to analog conversion.  Hence, the AIRA Series are currently among the highest resolution, highest quality digital instruments in the world.  In fact, I don’t know of any other digital instruments that utilize a resolution this high.  This hi-resolution further contributes to the undeniable sounds that are so recognizable from our analog heritage.
Hearing is Believing

If you don’t believe me, watch the video below and hear it right from the engineers themselves.  If you still don’t believe me, the AIRA series are now in stores, so go try them yourself!  The AIRA Series surely speaks for themselves. Don’t worry, though, they speak in oscillators and LFOs, not Japanese.

adrians faceAdrian Marsi is the Pro Keyboards & DJ Product Marketing Manager for Roland Canada. Follow Adrian on twitter – @rcmsynthguy.