Skip to main content
Play Video

Mira Optical Compressor Effects Pedal

We're sorry-this item is unavailable.
Contact our experts for a recommendation of great alternatives. Call us at 800-449-9128.


An effects pedal that offers warm, analog optical compression and mountains of sustain.

With the Mira Optical Compressor effects pedal from Walrus Audio, you’re creating and shaping studio-grade timbre that demands to be seen, heard and, above all, felt. The Mira delivers warm, analog optical compression with mountains of sustain, and a smooth attack and release that can be blended in to taste. Dynamically engage the senses with the Mira—a true bypass optical compressor offering studio-grade sound sculpting and sustain packed with controls you’d normally find on studio units. Use the Blend knob to mix in your compressed sound with your clean tone to maintain note clarity while offering increased sustain.

The Mira also offers in-depth control over Attack, Release, Ratio and a Make-Up knob to help maintain unity levels after your signal has been compressed. For higher headroom, Mira runs internally at ±15VDC. Adding to the bonus features, Walrus decided to also provide a push-button High Pass Filter in the side chain (the part of the circuit that controls the optical element in the compressor). This is great for preventing bass frequencies 120Hz or below from engaging the compressor as much as higher frequencies. The keen result of this keeps the compressor from overworking on lower notes and is great for bass guitar, or keeping low-frequency dynamics dramatic for guitar players. Look to the Mira as your new always-on pedal. Even at low settings, not only will you hear rich, full clarity in your notes, but you’ll feel the difference in its response, too.


  • Coated in a smoky grey enclosure with cream, orange, red and dark blue ink, with art by Adam Forster
  • True bypass
  • Use of an isolated power supply recommended
  • Daisy chain power supplies are not recommended
  • Power supply not included

Order the Walrus Audio Mira Optical Compressor effects pedal today.


Mira Optical Compressor Effects Pedal Specifications:

  • Dimensions: 4.77" x 2.6" x 2.28"
  • Power requirements: 9VDC, center negative (200mA minimum)
  • Runs internally at: ±15VDC
Shop with a Friend
Free Shipping
  • Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
  • Orders placed before 3 p.m. ET usually ship the same business day.
Learn More
2-Year Free Warranty on Guitars

Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.

Contact Us for Details
We're Here for You

Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.

Contact Us
Proactive Advisor Support Chat