The Iron Ether Mostly Elevators is a harmonic tremolo pedal with some special expressive features. Where an ordinary tremolo, like the pedals gathered on the Tremolo Pedals page, simply turns the whole signal up and down, a harmonic tremolo works on bands of the frequency spectrum, and the Mostly Elevators adds a twist: its rate and depth can be driven by how hard you play or by what notes you play. It lists for $295.00 USD1.
What it does
Iron Ether describes the LFO waveform as "a lovely, perfect sine wave, but as Depth is increased it becomes harder, choppy and percussive." So at low depth the effect swells smoothly, and digging into the Depth control turns it into a harder-edged pulse1.
The pedal also carries a Spectral Tilt control, which tilts the tremolo towards high frequencies while leaving lower frequencies untouched, or the other way around; at center, all frequencies tremble together1.
Controls and modulation modes
The expressive core of the pedal is that the Rate or Depth can be modulated either by your playing dynamics (Env) or by the pitch of the notes you play. Toggle switches select the modulation source and destination, and the Mod knob controls the strength, positive to the right of center or negative to the left of center1.
| Setting | What happens |
|---|---|
| Env->Depth, Mod right of center | Softly plucked notes appear unaffected, but digging in brings the tremolo in more strongly1 |
| Pitch->Rate, Mod left of center | Low notes pulse quickly and high notes slowly1 |
The expression jack inserts an expression pedal in series with the Mod control, allowing both the amount and the direction of modulation to be controlled continuously. That means a footswitch can sweep the modulation from, say, pitch-following on one side to envelope-following on the other as you play1. Iron Ether's own range of Expression Pedals covers pedals suited to this kind of jack.
Availability
Iron Ether listed the Mostly Elevators as in stock as of 26 October 2026, with the note that if the pedal can be added to cart it is in stock and ships in 5 business days. The maker also says a new batch comes into stock every week or every other week, and if a batch has sold out, players can add their email to be notified1.
The pedal's enclosure features three-dimensionally engraved graphics and a color-shifting powder coat finish1.
Iron Ether's product page states that batches sell out between restocks, so the pedal may be unavailable for a week or two at a time; the maker offers email notification during sold-out periods1.
Questions
How much does the Iron Ether Mostly Elevators cost?
The Mostly Elevators lists for $295.00 USD on Iron Ether's product page, as of 26 October 2026. Iron Ether notes that a new batch comes into stock every week or every other week, and if a batch has sold out the maker asks players to add their email for notification.
Who designed the Iron Ether Mostly Elevators?
Iron Ether states that the Mostly Elevators was designed in collaboration with Don Stavely. The pedal is built by Iron Ether, the maker behind other effects such as the Divaricator and Subterrograph.
Can you use an expression pedal with the Mostly Elevators?
Yes. The expression jack inserts an expression pedal in series with the Mod control, which lets you control both the amount and the direction of the modulation continuously with your foot while you play.
Is the Iron Ether Mostly Elevators in stock?
Iron Ether's product page listed the Mostly Elevators as in stock as of 26 October 2026. The maker says that if the pedal can be added to cart, it is in stock and ships in 5 business days, and that new batches arrive every week or every other week.
Sources (1)
- Mostly Elevators, Iron Ether