The Shift-Line A+ Everest is a reverb-delay pedal from Shift Line that runs delay and reverb in parallel, so both effects work on the signal at the same time rather than one feeding the other1. Shift-Line describes the original pedal's three modes as "bright and cutting Sunshine, mild and woozy Eclipse, whirly and psychedelic Moonshine"1. The line later grew into the Shift Line A+ Everest M and the stereo Shift-Line A+ Everest II Black Edition, and Shift-Line now lists both of those models as discontinued23.
Modes and Infinity
The original A+ Everest keeps things simple: three modes covering a range from clean and bright to heavily modulated. Sunshine is the bright, cutting setting, Eclipse sits in the middle with a mild, woozy character, and Moonshine is the whirly, psychedelic one1.
The Everest M expands that idea into six reverb/delay algorithms split across two banks. The MODE switch selects one of the six algorithms, and each bank contains three sounds: Bank 1 holds extended versions of the original Everest algorithms with access to Infinity Mode, while Bank 2 contains new sounds2.
Infinity Mode is a feature the Everest line shares with Shift Line's Shift-Line A+ Astronaut III. When Delicious Audio covered the Astronaut III in March 2020, Paolo De Gregorio described it as "an infinite sustain mode (Infinity Mode)"4. On the Everest M, the BYPASS switch controls it: press once to turn the effect on or off, press and hold to go into Infinity Mode for infinite sustain, and press and hold while selecting an algorithm to reach Bank 22.
Versions: Everest M and Everest II Black Edition
Shift-Line describes the A+ Everest II as "the result of the Everest M evolution"3, moving the concept from mono to a Stereo Reverb-Delay. The Everest II Black Edition combines reverb and delay in a single compact pedal, which Shift-Line says "allows for otherworldly atmospheric textures"3. Its MODE switch selects the bank and patch, and the REGEN knob simultaneously controls delay feedback and reverb decay, so one knob shapes how long both the repeats and the reverb tail last3.
The Black Edition's patches carry the Everest theme through their names and descriptions:
| Bank position | Patch | Shift-Line's description |
|---|---|---|
| Blue UP | Sunshine | "A sunny, snowy and frosty morning right atop the Everest" |
| Blue CENTER | Eclipse | Modulated delay repeats and solemn reverb reflections |
| Cyan CENTER | Avalanche | A dark, heavily modulated patch for slow ambient parts |
| Magenta UP | Iceman | Bright delay and reverb with 80s-style modulation based on flanging and a resonant filter; the reverb omits low frequencies |
| Magenta DOWN | Dark Drum | Punchy delay with upper octave traces, plus a reverb with a huge octave down and high frequencies significantly cut |
| Red UP | Digital | Clean delay repeats with no audible degradation, coupled with bright reverb reflections |
All patch descriptions come from Shift-Line's product page3.
Both the Everest M and the Everest II Black Edition are marked "THIS PRODUCT IS DISCONTINUED" on Shift-Line's product pages, so the pedals are no longer in current production23.
Power and connections
The Everest M runs on a supply with negative tip polarity, the center-negative standard most pedalboards already use2. The Everest II Black Edition takes universal power in the 9-12V range, with what Shift-Line calls a low current draw by digital device standards of 100-150mA3.
The Everest II Black Edition also offers four connection modes: MONO, MONO TO STEREO, STEREO/DUAL MONO, and DOUBLE PROCESSING3. For a player, that range means the pedal can sit in a simple mono chain, split its delay and reverb to separate outputs, or run fully stereo, which matters if you use two amps or a stereo rig.
Videos
Chords Of Orion
Brett Kingman
AFX
Questions
Is the Shift-Line Everest a reverb or a delay?
It is both. Shift-Line lists the A+ Everest as a Reverb-Delay, with the delay and reverb running in parallel rather than in series. The Everest II Black Edition is described as a Stereo Reverb-Delay, combining reverb and delay in a single compact pedal for atmospheric textures. On the Everest II, the REGEN knob simultaneously controls delay feedback and reverb decay.
What are the Sunshine, Eclipse and Moonshine modes?
These are the three modes of the original A+ Everest. Shift-Line describes Sunshine as bright and cutting, Eclipse as mild and woozy, and Moonshine as whirly and psychedelic. On the later Everest II Black Edition, Sunshine and Eclipse return as patches alongside others such as Avalanche, Iceman, Digital and Dark Drum.
What is the power polarity of the Everest M?
Shift-Line specifies a negative tip power polarity for the Everest M. That matches the center-negative standard used by most guitar pedals, so a typical 9V DC pedal supply should work, though the page does not list a voltage or current draw figure for this model.
Is the Shift-Line Everest discontinued?
Yes. Shift-Line marks both the A+ Everest M and the A+ Everest II Black Edition as discontinued on their product pages. The Everest II was released in September 2023 as a stereo evolution of the mono Everest M, and both models have since been retired by the maker.
What connection modes does the Everest II offer?
The Everest II Black Edition offers four connection modes: MONO, MONO TO STEREO, STEREO/DUAL MONO, and DOUBLE PROCESSING. These let the pedal run as a simple mono unit, send delay and reverb to separate outputs, or process in stereo, which suits players building a stereo rig or using two amps.
Sources (4)
- A+ Everest, Shift-Line, 2026
- A+ Everest M, Shift Line, 2026
- A+ Everest II Black Edition, Shift-Line, 2026
- Shift-Line's A+ Astronaut III Reverb/Delay/Sampler, Delicious Audio, 2020-03-19
