Just over a year ago, Roland unveiled its successor to the iconic 808 and 909 instruments that have a firm grasp on the modern music landscape. That drum machine, the TR-8, was part of a new AIRA line with the System-1 synthesizer, TB-3 bass synth and VT-3 vocal processor. At this year's Musikmesse in Frankfurt, the company revealed the AIRA Modular: a standalone instrument that can be paired with a handful of external effects or other audio gear. What's more, it's designed to be rackmounted or used at your desk, either with all four of the aforementioned add-ons or one or two at the time. While last year's System-1 offer a more traditional keyboard-driven approach, the AIRA Modular's centerpiece is the System-1m. The unit features Control Voltage (CV) and Gate control needed to produce a range of sounds and plug-out ability allows the System-1m to be used with other classics, like the SH-101 and PROMARS. On board, the modular synth packs in tone, crusher, reverb and delay effects alongside MIDI and LED-lit controls and inputs.