EFI is an analog multi-mode filter that is loosely based on the Korg MS-20 filter, but has been improved to fit into a 4 HP module.

It has a Low Pass and High Pass Mode which you may choose via Switch on the front panel. Additionally there are two CV inputs with an attenuator each.

Resonance can self-oscillate and there is a third mode that you may choose via jumper on the back. In this mode Resonance will be overdriven very quickly in Low Pass Mode and you will get some nice liquid sounding overtones.

Details:
• Analog Dual-Mode-Filter
• Filter Modes: LP, HP (+ LP Overdrive via Jumper)
• Resonance Control
• Two CV Inputs
• Two CV Attenuators
• Wrong Polarity Protection
• 3U Eurorack module, 4 HP wide

Reverb Buyer Protection

Reverb has your back if your item is lost, damaged, or doesn't match its description. Simply report any issues within 7 days and we'll help you get a full refund.Learn more about Reverb Buyer Protection.

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • EFI - Dual-Mode Analog MS-20 Style Filter
Categories

Reverb Protection

Simple Returns, Secure Transactions, Human Support

Learn more

Secure Checkout

CalSynth

Aliso Viejo, CA, United States
Sales:1,898
Joined Reverb:2015

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Carbon-Offset Shipping

Your purchases also help protect forests, including trees traditionally used to make instruments.

Oops, looks like you forgot something. Please check the fields highlighted in red.