BlaknBlu Oscar Tria Stereo VCO Review

video upload by Molten Music Technology

"The triple featured Oscar Tria offers regular waveforms, swarming oscillations and polyphonic chord modes within a Eurorack, CV-controlled context. The stereo format offers some lovely detuning and there's some superb morphing between the waveforms. It's built on a digital platform but has a very analogue sound and workflow. Let's get into it."

Index:
Sound demo - 0:00
Intro - 4:57
Overview - 9:34
Green Mode - VCO - 12:29
Yellow Mode - Swarm - 24:32
Orange Mode - Chord - 33:45
FM - 42:16
Noodling - 46:27
Running it in Mono - 51:37
Conclusions - 56:42

"Oscar Tria packs a lot of VCO into 10HP. There are three main modes described below.

Green Mode:
A ‘traditional’ stereo oscillator. In Green Mode you get the usual three waveforms – saw, triangle and square (with variable pulse width, of course) but you can continuously vary the waveform between the three. For instance, by turning the waveform knob to be just to the saw side of triangle, you get a sound very much like the Minimoog’s ‘shark tooth’.
Green mode also gives you a square wave sub oscillator – one octave below the main oscillators – and a sub sub, two octaves below.
Oscar Tria is stereo, of course, so you can detune one oscillator for a rich stereo image – or sum the two outputs to mono and you have two oscillators with two subs, for a BIG sound.
Green mode also features through zero FM, and hard sync.

Yellow Mode:
Super-saw! And super-square! And super-triangle! With a sub (of course). Yellow mode allows you to control the number of oscillators making up the super-whatever, from one (not really super) to 24! Again, being stereo you get up to 12 oscillators in one channel and 12 in the other. Add the sub for a HUGE sound.

Orange Mode:
This is a chord engine, with 20 selectable chords. There are controls to select which chord you want and how many notes are played (over two octaves). CV control allows you to set pitch and chord independently, so you can set up a polyphonic sequence, for instance. Again, the output is stereo with detune control of one output."