Olivella Modular Quatro

Olivella Modular Quatro

QUATRO features four voltage-controlled amplifiers, each with a variable response curve control, CV input attenuators and independent GAIN controls. As its outputs are daisy-chained, QUATRO can also be used as a mixer.

Its separate CV and GAIN controls allow for maximum versatility for shaping your sound; with no CV input and the GAIN knob turned fully CW, a gain of 1.33 can be achieved (+2.5dB), while backing it off to 3 o'clock gives unity gain (0db) in linear mode.

Given a CV input of +10V and with the GAIN knob turned fully CW, the maximum possible gain in linear operation is 3.125 (+10dB) and 750 (+57.5dB) in exponential operation, capable of bringing low-level signals up to modular level and/or clipping the **** out of them.

Its buffered daisy-chained OUTs allow for adjacent groups of 2, 3, or all 4 channels to be mixed together without signal loss.

Based on Veils v1, by Mutable Instruments. Original design by Émilie Gillet - CC BY-SA 3.0.

Features

2164 based VCAs

Variable response curve control from linear to exponential

Separate CV and GAIN controls

Adjacent OUTs of 2, 3, or all 4 channels can be mixed together

Capable of amplifying line level signals, guitars and piezos up to modular level

​Self-oscillation?!?!?

Details

12 HP

38 mm deep

2 mm anodized aluminium panel

DC-coupled

All CV inputs allow audio-rate modulation

Input impedance: 100 kΩ

Output impedance: 510 Ω

+12V: 60mA