Plum Audio ADVA 3U User Manual

PLUM AUDIO – ADVA
3U User Manuel rev 1.0
Thanks for purchasing ADVA from Plum Audio!
ADVA is a fat-sounding 24dB ANALOG MULTIMODE FILTER packed with
features including a VCA, white noise generator, pre and post-distortion
circuits and a smart digital interface that makes it a versatile beast in a
surprisingly small package.
With 7 filter modes, ADVA provides high richness and a wide variety of
tones; it can filter gently like an LPG or it can be pushed up to the edges of
hot acid tones.
Unlike many other multimode filters, a phase keeper circuit ensures that
ADVA never inverts the input's phase in any of its filter modes.
Self-Oscillation is available for all modes, producing a range of waves
from clean sine waves up to soft square waves when activating the post-
distortion circuit. Together with V/OCT tracking, ADVA works brilliantly as
an oscillator or as a percussive sound generator.
A resonance loudness compensation circuit ensures that ADVA does not
compromise on volume when the resonance is increased.
An Internal analog white noise generator is the little bit of spice that can
make the world of difference. Blend it together with the input signal by
rotating the dedicated knob to add more richness to your sound and
further emphasize cutoff movements, or use it as an FM source to achieve
the different flavors of dirty tones.
ADVA is packed with two separate distortion circuits. First, the soft-
clipping overdrive is located in the sound path after the white noise blend
knob and the input gain knob, a circuit which can push the incoming signal
to thicken any waveform. If you blend the input with the noise generator
it can compress the noise and exaggerate it to achieve more aggressive
levels.
The second (post) distortion circuit is located after the VCA, just before
the output. This is a more aggressive distortion and can be used for acid
and other dirty hot tones.
Although the sound path is completely analog, ADVA has a digital support
circuit that enables a smart routing system with the option to modulate
filter modes via CV, and a very intuitive interface that includes 3
CLICKKNOBS and an RGB LED ring that provides visual feedback for
whatever state the filter is in.