Befaco

Notes: Quad Attenuator/Inverter, Splitter, and Offset Generator

Scale your audio or CV sources and route them to various destinations with this versatile utility. It consists of four identical unity gain amplifiers. Each amplifier can multiply an incoming signal by values ranging from 0 to 1 (for attenuation) or from 0 to -1 (for inverting attenuation). The input of each channel is normalled to the input of the next channel, allowing for easy signal routing from one input to the subsequent ones.

The first channel is normalled to 10V, enabling the module to function as an offset generator when no input is connected.

Features

Inversion switch per channel.
Precise zero at the left side of the pots.
Four level LEDs indicate output level and polarity.
Cascaded input topology

Specs

Current needs: +12V: 60mA, -12: 50mA, 5v:0
Width: 4 HP
Depth: Assembled version 25 mm
Depth: DIY version 35 mm
Designed, kits prepared and modules assembled in Barcelona.

Notes: Combine up to four audio and or CV sources into one output, with independent manual level control.

It can be used as a four-channel mixer or as two separate two-channel mixers, depending on the connection.

If a cable is connected to the Master output but not to the 1+2 output, all channels will be summed at the Master output. If both the Master and 1+2 outputs are connected, the Master will output the mix of channels 3 and 4, while the 1+2 output will provide the mix of channels 1 and 2.

Each pair of channels has an LED indicator that shows the presence of a signal.

Notes: Voltage-controlled lag processor and slope detector

Transforms stepped notes into smooth acid slides with independent speeds for both upper and lower notes.

The onboard slope detector generates gates while the output is rising or falling, allowing events to be activated when moving to upper or lower voltages.

Additionally, it can convert a gate signal into an Attack-Sustain-Release (ASR) envelope.

The shape control feature helps balance speed versus input range, enabling quicker speed while sliding to further notes allowing for time compensated portamento.

Features

Perfect pitch tracking (error < 1 mV)
Independent rise and fall controls
Assignable CV input for rise and fall times
Three selectable speed ranges
Fader-based interface allows for one-handed adjustment of rise and fall times

Specs

Current needs: +12V: 20mA, -12: 15mA, 5v:0 on additional rails
Width: 4 HP
Depth: 25 mm (including power connector)
Designed, kits prepared and modules assembled in Barcelona