Strymon Zelzah Multidimensional Phaser

Wayback Machine

Step on Zelzah, play one chord, and you’re instantly taken back to a world of classic phaser tones as they were always meant to sound, perfectly voiced, with tons of vibe. Vintage 4-stage and 6-stage phasing with controls that allow seamless transitions to vibrato, gorgeous flanging and chorus, and new sounds never heard before—all instantly musical with great tone all the way across every dial.

Two Effects at Once

Zelzah is actually two different phasers, side by side in one pedal. Zelzah’s 4-stage side gives you a wide array of classic tones ranging from phasing to vibrato and more, while the 6-stage side provides phasing, flanging, chorus, and all points in between. Dial in a chorus on one side and barber pole phaser on other, or a phaser on one side and tremolo on the other. Use the two sides independently or together in a variety of configurations. Zelzah may become the only modulation pedal you keep on your board.

Choose Your 4-Stage Phaser Sweep

Classic Sweep
The first Sweep mode is labeled “Classic” because this is the classic four stage phaser sweep we all know. In this Sweep mode, a single LFO with a warped triangle shape creates that familiar vintage sound.

Barber Sweep
Similar to the visual effect of a barber pole, the Barber sweep is a continuously rising or falling effect that is traditionally done with frequency shifters. In Zelzah we have used an arrangement of synchronized four stage phasers to produce the effect while maintaining the four stage sound.

Envelope Phaser
Set the Sweep switch to Env and you’ve got a whole new pedal under your feet. Now the phaser responds to your picking like an envelope filter/auto-wah would, with the phaser sweep being dynamically controlled by your input signal, creating harmonically complex and very funky sounds.

Six Stage Voice: Groundbreaking New Phaser Algorithm

The Voice knob on the six stage side simultaneously controls over 30 different parameters, all working in harmony for an inspiring musical experience.

Not only do you get thick, juicy, phasing with pure vintage vibe, but as you turn the Voice knob clockwise, our groundbreaking new modified all-pass structure expands the time response of the cascading all-pass filters seamlessly and continuously, adding spaciousness and airiness to the sound.

Explore a range of fresh musical tones that are not a mix of phasing and flanging, but actually something entirely new. Turn the Voice knob to the right for luxurious true flanger effects, and continue to the far end of the range for lush vintage chorus sounds. There are inspiring musical sounds at every point along the dial and so many ways to make a sound that is truly yours.

Specs

Two independent effects that can be configured and controlled separately and used one at a time or simultaneously in series, parallel, or split configurations
Vintage 4-stage phaser with three phaser sweep modes: classic, barber, and envelope
Groundbreaking new 6-stage phaser algorithm with a continuous range from classic pure 6-stage phasing to flanging to chorus, all with adjustable resonance
True stereo operation means under the hood each half of the pedal has two phasers running side by side (two 4-stage and two 6-stage) or in series, with independently adjustable stereo spread for each
All controls are carefully voiced to produce musically useful sounds at any setting
Adjustable input level switch to allow for both instrument and line level signals
Selectable Buffered or True Bypass
Full featured MIDI implementation via TRS or USB supporting MIDI CCs, MIDI clock sync, access to 300 preset locations
High impedance ultra low-noise discrete Class A JFET TRS stereo input.
Low impedance independent TS stereo outputs.
Expression pedal input allows the connection of a TRS expression pedal, MiniSwitch, MultiSwitch Plus, or TRS MIDI connection.
USB jack for controlling via MIDI from a computer or for performing firmware updates.
Independent on/off footswitch for each phaser
Premium JFET analog front end
Ultra low noise, high performance 24-bit 96kHz A/D and D/A converters provide uncompromising audio quality
480MHz ARM Superscalar processor
32-bit floating point processing
20Hz to 20kHz frequency response
Audio Input Impedance: 1M Ohm
Audio Output Impedance: 100 Ohm