Cornerstone Pedals: Zefiro Optical Compressor
The Zefiro Optical compressor has been designed for people who don’t like compressors, but instead want the tonal-shaping and sustaining behaviour of a compressor. With this design purpose, the Zefiro features a very smooth and soft action, much like a studio compressor, together with an extreme tonal transparency. It is very useful for adding warmth and balance to the sound of electric, acoustic and bass guitars.
Looking at the controls, there are Comp, Volume, Tone and Sensitivity
The Volume control acts as a master output level control. The Tone knob is a tilt-eq control and changes both the bass and treble frequency response at the same time: the more treble the less bass and vice versa. This tilt-eq operation has a pivot frequency set at 1kHz, in the middle of the guitar audio frequency spectrum.
When the Volume and Tone controls are at noon, there’s no loss in volume and the eq is totally flat.
The Comp control determines the amount of compression, which can vary from very subtle up to quite squashing.
The Sensitivity control acts much like a threshold control; it changes the compression level and so manages the overall dynamic response, still keeping the same amount of compression.
The Zefiro requires a standard 9V DC Negative power supply only.
- Classic Drive Pedal
- Handmade in Italy
- Side Mounted Jacks
- Controls: Tone, Volume, Presence and Gain
- 9V- DC Negative
- No PSU supplied
About Cornerstone Handmade Pedals
From CornerStone Music, A Family owned company which prides itself on Design and Handmade Manufacturing. Conerstone manufacture Guitar and Bass pedals to the highest quality. From the minds of Linda and Emilio. Linda is originally a management engineer, she looks after the logistics and production aspects of Corner Stone. Emilio is an aerospace engineer who is truly passionate about Guitar. He builds all of Cornerstone Pedals.
Built with Passion by Musicians for Musicians, Cornerstones dream is to reach the tastes of as many Guitarists as possible. What they offer is Cornerstones interpretation.
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