Comparing DivKid's Instruō øchd with Doepfer A-145-4 Quad LFO

Here are two seemingly similar modules that couldn't be more different, but are both incredibly useful.

DivKid's øchd from Instruō

øchd offers eight Triangle Wave LFOs, running from +5V to –5V, arranged from fastest on top to slowest on bottom, deliberately unaligned (chaotic, not synchronized), all controlled with a single speed knob and attenuated CV input.

If a sufficiently negative CV is applied, the module enters a "hold" state, freezing the values of all eight LFO outputs at their current voltage.

This module does what it does very well, but it does have a few weaknesses depending on your use-case:

• The rate of all eight LFOs are controlled in tandem.  You can't keep one of them steady while adjusting the speeds of the others.
• The LFOs are all 10vpp, so you will need to attenuate the outputs before applying them to control other modules.  Some modules have attenuators built into their CV inputs, so depending on what you're pairing it with, this may not be an issue.
• The LFOs are all triangle waves.  This is a very useful shape, but it is incapable of performing one very important task often assigned to an LFO—acting as a trigger.

At the time of writing, Perfect Circuit has this module available for $199.

Doepfer A-145-4 Quad LFO

A-145-4 offers four LFOs with separate manually adjustable speeds.  Each of these LFOs is also configurable via a jumper on the rear of the module between two speed ranges, and these two speed ranges do have a significant amount of overlap.

Each of the four LFOs has two outputs: a square wave, and triangle wave, which makes it perfect to generate triggers or use as your master clock signal.

The main weakness in this module is its lack of CV control.

At the time of writing, Thomann has this module available for $73.