Dunable Eidolon

The Dunable Eidolon is a multi-effect pedal that combines a clean boost, a digital delay and a reverb in a single box. It was conceived by Dave Davidson, guitarist of the metal band Revocation, and built by Dunable, the guitar, amp and effect builder run by Sasha Dunable¹². The idea is a lead-guitar pedal: one switch that brings in ambience and a volume lift together, so your solos jump out without a board full of separate boxes.

A single on/off footswitch activates all three effects at once, though each effect's level is controlled independently, so you can set your own balance of boost, repeats and reverb before you ever step on the switch². The delay is tap tempo enabled and offers up to 1 second of repeats, and the reverb morphs from a short room style decay to a near-infinite ambiance¹.

Boost, delay and reverb in one box

The Eidolon is a fully integrated digital delay, reverb and boost¹. The three sections stack in one signal path, and the boost is a clean one: MusicRadar described it as a clean volume boost that can pump your signal with up to 20dB⁴, and Guitar.com likewise reported the clean boost can lift your signal by 20dB³. On the later Frost Giant Electronics version of the circuit, the final mix of dry and delay/reverb signals may be boosted by up to 21dB of flat IC gain, which the maker positions as perfect for a solo boost⁵.

What each section does:

• Boost: up to 20dB of clean volume lift for solos⁴³
• Delay: up to 1 second of repeats, described by Delicious Audio as crystal clear, with tap tempo control¹
• Reverb: morphs from a short room style decay to a near-infinite ambiance¹
• Modulation: a toggle switch adds modulation to the reverb, and a modulation switch lets you process your delayed signal for added wet¹⁴

Premier Guitar's reviewer summed up the pedal's appeal in its pros and cons²:

That trade is the heart of the pedal: three effects, one switch, but fewer knobs than three separate pedals would give you².

The controls

The control set is deliberately small. Premier Guitar noted that a single on/off footswitch activates all three effects, though you can control their levels independently². On the Frost Giant Electronics reissue of the circuit, the control layout is spelled out in more detail:

The delay is tap tempo enabled on the Dunable original as well¹. The reverb modulation is handled by a toggle switch rather than a knob¹, and the modulation switch for the delayed signal is likewise a switch, not a depth control⁴. Players who want fine control over modulation depth or separate delay and reverb engagement will find the options limited, which is exactly the con Premier Guitar flagged².

From Dave Davidson's circuit to the Dunable pedal

The Eidolon is a creation from the mind of Dave Davidson of the band Revocation¹. Dunable partnered with John at Electronic Audio Experiments for the engineering as well¹; the original Eidolon design is credited to John Snyder at Electronic Audio Experiments⁵. Manufacturing was handled by Damnation Audio, all in the United States⁴.

The timeline:

• January 2019: Delicious Audio saw the prototype at NAMM 2019 and filmed a demo with company owner Sasha Dunable at its Stompbox Booth¹
• September 2019: Dunable announced the pedal, with pre-orders open at $259⁴³
• October 31, 2019: the Eidolon shipped³
• 2024: Frost Giant Electronics teamed up with Dave Davidson to bring back the circuit as the Frost Giant Electronics Eidolon, originally offered by Dunable Guitars⁵

The Frost Giant reissue keeps the same core: a fully integrated digital delay, reverb and boost, with up to 1 second of repeats and tap tempo⁵⁶. Players comparing the two will find the same circuit DNA, with the reissue adding its own control layout.

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