Opto Phase is an analog-modelled phaser effect, based on a custom-designed phaser circuit. The phaser circuit functions using a light-source (e.g. an LED) driven by a low-frequency oscillator (LFO), which is then coupled to a series of light-dependent resistors, which in turn control the cutoff frequencies for a set of allpass filters, thereby creating a modulating "phasing" effect.

In this effect, the dynamics of the opto-couplers are modelled using a physically-informed differential equation solver, while the rest of the circuit is modelled using Modified Nodal Analysis. The "Rate" knob controls the speed of the LFO driving the phaser effect.

The "Feedback" knob controls the amount of signal being fed-back from the output of the effect back into the phaser circuit.

The "Frequency" knob controls the "base" cutoff frequency for the allpass filters, and the "Range" knob controls how far the cutoff frequencies are allowed to be modulated.

The "Stages" knob controls how many allpass phasing stages are in the circuit. A 2-stage phaser corresponds to a "45 degree" phase shift, 4 stages corresponds to 90 degrees, and so on.

Chowdhury DSP is a boutique audio software creator with the goal of developing high-quality, innovative audio effects and other tools for musicians and music producers.

Audio Effects have varying sizes which are determined by their maximum Processing (CPU%) and Memory (RAM%) usage.

ChowDSP Opto Phase

Size - Light

About Effect Stats

CPU% determines how many effects can be used together in the same preset. RAM% the amount of pedal storage is used by an effect. For more details visit the FAQ.

Multiverse by Aviate Audio

Q: What is the guarantee/ return policy?

A: We have a 60-day return policy, which means you have 60 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at contactus@aviateaudio.com. Please note that returns will need to be sent to the following address:

Q: I want to make pedalboards and presets to run on my Multiverse pedal.

A: Making your own pedalboard for Multiverse is easy and fun with the Multiverse Designer software. Registering your pedal is required in order to get new effects keys. Visit our Software Downloads page and check out the Multiverse Designer user guides to learn about how to manage your Multiverse effects library, create your digital effects rig and save it to the Multiverse pedal. Register your Multiverse pedal on the Registration page.

Q: How many effects can Multiverse store?

A: Each audio effect stored in the pedal (each unique effect used in all your presets) uses some of the hardware RAM (RAM0 and RAM1). New effects can be added to Multiverse hardware until the RAM limit is reached. If the limit is reached, all instances of an effect will need to be removed, repeating until you are back below the RAM limit.

Each effect uses a certain amount of RAM that is indicated in the effect description. Some effects require very little RAM (less than 1%), some effects are more detailed with more than 15% RAM usage. Some Multiverse effects are extremely powerful and consume more than 30% of the RAM available. The actual pedal RAM usage can be checked in real time in the hardware Menu (A+B).

Q: How many effects can I run at the same time?

A: Each audio effect uses some percentage of the hardware CPU. Adding too many effects to a single preset could cause the pedal to exceed the CPU limit. The pedal is capable of running numerous effects at the same time. There is plenty of processor bandwidth available to fuel CPU intensive effects. Most effects use less than 5% of the CPU. Some effects are more computing intensive and require additional CPU. Extremely powerful effects exist that require more than half of the pedal CPU. These effects are singleton-only effects, meaning you cannot run two copies of singleton effects on the Multiverse hardware.

Q: How complicated can I make my preset/ sound designs?

A: Multiverse supports stereo signal routing and signal splitting, both the input and output of the pedal support stereo/ monophonic operation. The signal routing in the processing and preset design can be configured and routed however you choose. in Designer audio outputs can be split. This means a cable connection can be split from one effect output to multiple other effect inputs. Audio can be re-mixed using a mixer effect such as the Blackaddr Mix4. For more info visit our Guides page on aviateaudio.com.

Q: I experienced a glitch or crash.

A: The most common reason for this is when the RAM or CPU limit on the pedal is reached. Using Multiverse Designer software connect your pedal. Select ABOUT, then HW TEST, the PROGRAM. This program will restore basic function. Hold A encoder when powering to test all the input controls on the hardware. If the HW TEST program does not resolve your crash: SAVE YOUR PRESETS, then CLEAR the designer of all your effects and presets. Test a simple bypass only preset by connecting an INPUT and OUTPUT jack on your PEDALBOARD area, connect them together (input too output), then SET, BUILD and PROGRAM to attempt resolving the crash with a bypass only presets.

Ensure you have all the keys for each effect in your designer LIBRARY. If you are missing keys for an effect, remove that effect.

Important: All effects must have the correct file name. Each effect file name must follow this format: DeveloperName-EffectName.efx

 Need assistance? For support email contactus@aviateaudio.com or join the Aviate Audio Multiverse Discord community.

Q: I want to be a developer and make my own effects for Multiverse.

A: Making your own effects is made possible with the Multiverse Software Development Kit. Visit our Developers page for more information.

Note: In order to access Multiverse developer tools you need Developer Edition hardware. Programming multiverse effects is for developers and requires programming skills. If you don't want to code for Multiverse get the Player Edition pedal and connect to the growing library of effects that have been published by multiple developers.