Sinc Defero#

Buffered quad attenuator with LED indication


Yep, it's an attenuator. With a fancy name! And LEDs!

  • Type: Quad attenuator and mult
  • Size: 4HP Eurorack
  • Depth: 0.8 inch
  • Power: 2x5 Eurorack
  • +12 V: 45 mA
  • -12 V: 40 mA


Sinc -- shortened from Sinclastic from Old English sinc "treasure", from greek clastic "easily removable"

Defero -- from Latin: "to slope down"

"Portable treasure reduction"


Power connector

To power your Noise Engineering module, turn off your case. Plug one end of your ribbon cable into your power board so that the red stripe on the ribbon cable is aligned to the side that says -12 V and each pin on the power header is plugged into the connector on the ribbon. Make sure no pins are overhanging the connector! If they are, unplug it and realign.

Line up the red stripe on the ribbon cable so that it matches the white stripe and/or -12 V indication on the board and plug in the connector.

Screw your module into your case before powering on the module. You risk bumping the module's PCB against something metallic and damaging it if it's not properly secured when powered on.

You should be good to go if you followed these instructions. Now go make some noise!

A final note. Some modules have other headers -- they may have a different number of pins or may say "not power". In general, unless a manual tells you otherwise, do not connect those to power.


illustration of Sinc Defero' sinterface

In 1-4
CV Inputs Inputs are circularly normaled so a single input can be sent to all outputs or as few as you like.
Out 1-4
Buffered outputs.
Attenuators 1-4
Attenuators for each channel Fully counterclockwise mutes a signal. Indicator LEDs show the incoming and outgoing signals, with green for positive voltage and red for negative.

Input & output voltages#

Sinc Defero is rated to work with voltages from -10 V to +10 V.

Patch tutorial#

Patch a single CV signal into Input 1. Patch the corresponding output to an input on an oscillator, for example, the Basimilus Iteritas Alter. Turn the attenuator to turn the CV level up and down.

Add patch cables to other outputs and send them to other inputs on BIA. The single input is sent to all outputs.

Add a second signal to Input 3. The signal on Input 3 is now sent out of outputs 3 and 4.

Design notes#

Sinc Defero was one of a suite of really simple utility modules we came up with during a day of planning. While we were really trying to work on some bigger things that we wanted in our line---like filters and effects---we just kept having ideas that we thought would be just so helpful if we had them with the things we were talking about. By the end of the day, we had designs for three simple products that we'd never discussed before and had prototypes ordered by the end of the week.

This module was meant to fill the hole we saw in the market for a buffered attenuator. While passive attenuators abound (and we use the heck out them), the drop in voltage they sometimes cause can be problematic, and we wanted something that would be active and give some visual feedback. Plus, it wouldn't be NE if it didn't have blinkenlights!


We will repair or replace (at our discretion) any product that we manufactured as long as we are in business and are able to get the parts to do so. We aim to support modules that have been discontinued for as long as possible. This warranty does not apply to normal wear and tear, including art/panel wear, or any products that have been modified, abused, or misused. Our warranty is limited to manufacturing defects.

Warranty repairs/replacements are free. Repairs due to user modification or other damage are charged at an affordable rate. Customers are responsible for the cost of shipping to Noise Engineering for repair.

All returns must be coordinated through Noise Engineering; returns without a Return Authorization will be refused and returned to sender.

Please contact us if you think one of your modules needs a repair.