
The IRIDIUM keyboard is based on the highly acclaimed desktop version and is in no way inferior to it in terms of sound. In addition, both versions are a modification of the exceptional QUANTUM synthesiser, which can certainly be regarded as a milestone in the history of synthesisers. In the case of the IRIDIUM, modification means that the instrument boasts an impressive 16 voices and outstanding digital multimode filters. Keyboard enthusiasts can look forward to the high-quality 49-key FATAR keyboard with polyphonic aftertouch and velocity response. The keyboard version does without the 16 pads of the desktop unit, but the area to the left of the keyboard has been expanded considerably, which more than lives up to the term "performance section". Eight control voltage inputs and outputs on the rear panel allow the IRIDIUM to be controlled with components of a Eurorack modular system or semi-modular synthesiser.


At the heart of the Iridium are its three digital oscillators, each with five selectable synthesis modes:
Some of the oscillators are incredible in their own right and offer an enormous range of different sounds. As there are even more parameters under the bonnet, which can also be modulated many times, new sound creations are likely to be an ongoing process in the best sense of the word. The Iridium's filter is an excellent dual multimode filter of digital origin and covers a wide spectrum of resonant and damped sounds. The elaborate signal chain is completed by five simultaneously available effects such as delay, reverb, chorus, flanger or phaser and the master compressor.

With six loopable envelopes and LFOs as well as the complex modulator, which is a mixture of two LFOs with waveforms that you can draw yourself(!) and an envelope, you have enough options at your fingertips to fill the 40-entry modulation matrix and thus breathe life into the sound at almost any point, in addition to the usual modulation sources such as velocity or aftertouch.



The high-resolution multi-touch display allows easy access to every parameter and visualises every movement on the control panel. With impressive precision, it shows real-time changes in the sound at various stages of the synthesis process. It is the same size as that of the Quantum and is surrounded by the same set of knobs and buttons.

To the left of the keyboard is the so-called performance section, in addition to tried and tested standards such as the octave selection and the two handwheels for pitch bend and modulation, as well as the hold button (latch), there are some direct access options here. Mono switches between monophonic and polyphonic play for the current patch. Chord allows you to create a chord. Seq/Arp takes you directly to the appropriate menu page on the touchscreen and switches between sequencer and arpeggiator when pressed again. The six self-definable macros are a great help when using the IRIDIUM keyboard, as you can specify which function or action you want to access most quickly. For example, you can jump directly to the recording area of the sequencer or switch glide on/off.

