Echo Fix EF-P2 Spring Reverb

The Echo Fix EF-P2 is a real spring reverb pedal: instead of modeling the sound of springs in software, it drives an actual three-spring reverb tank inside the enclosure, the same tank technology found in the reverbs built into vintage amps like the Fender Deluxe¹². Echo Fix describes it as a pedal that "packs a huge sound into a small enclosure," with a 100% analog signal path from input to output¹.

What sets the EF-P2 apart from the spring reverb built into an old amp is control. Where an amp gives you a single reverb knob, the EF-P2 adds an adjustable Spring Drive control and Bass and Treble EQ for the wet signal, so you can push the springs harder or softer and then shape what comes back³¹⁴. It sits in a small but growing niche of real spring reverb pedals, and reviewers have taken notice: one described it as "cramming delicious, classic reverb tones into a modern-looking enclosure with some throwback visuals," a unit that "takes your reverb game to the next level" in overall sound and design⁴.

Where it came from

The EF-P2 grew out of Echo Fix's own tape echo line. Delicious Audio notes the pedal's spring reverb was at least in part inspired by the spring reverb found in the Echo Fix Tape Echo, the company's flagship unit². Gearnews traces the lineage further back: the spring reverb circuit descends from the type used in the Roland Space Echo, and Gearnews describes the EF-P2 as a dedicated spring reverb pedal that takes that circuit and adds EQ and drive controls⁵. Echo Fix also makes the EF-X2 Tape Echo, the EF-X3 Vintage Voice and the rack-mounted EF-X3R Vintage Voice.

The pedals are designed and made in Australia, which Gearnews flagged as a notable point when the EF-P2 was announced in August 2023³.

The controls

Four knobs sit on the case, and MusicRadar walked through them from left to right in its launch coverage²:

The Spring Drive knob is the one that matters most to players chasing that drippy, surf-style spring sound. Because it controls how hard your signal hits the springs rather than just how loud the wet signal is, you can overdrive the tank itself for a more aggressive, boingy character, or back it off for a subtler wash, then use the EQ to fit the reverb around your amp and guitar. The Reverb Level control then sets how much of that processed spring signal is mixed in¹⁶.

Two footswitches complete the picture: one for reverb bypass, and a direct signal mute footswitch¹. The mute switch is the unusual one. With the direct signal muted, only the reverb output remains, which is what lets the EF-P2 work as an outboard reverb unit rather than just a pedal in a chain².

Power and connections

The EF-P2 runs on a 9V DC center negative supply and draws a minimum of 200mA¹. That current draw is worth noting before you build a board around it: 200mA is more than a typical analog drive or boost pedal, so check that your power supply has a tap with enough headroom rather than assuming any 9V output will do.

Connections are mono: a mono jack input and output on the rear panel³. Input impedance is 1M Ω, the standard for a guitar input, and output impedance is 1KΩ¹.

More than a guitar pedal

Although it is built as a guitar pedal, the EF-P2 is not limited to guitar. Pedal of the Day notes it "can accept audio signal from synths and other audio devices, not just guitar"⁴, and Delicious Audio describes the direct mute footswitch as what makes it usable as an outboard reverb². Gearnews went further on the studio angle, calling it potentially a great studio tool for players who want this vintage style of effect, and "a lot more natural sounding than a plugin" within a DAW³.

Size and price

The enclosure measures 160mm x 130mm x 60mm (6.29" x 5.11" x 2.36")¹. That is larger than a standard compact stompbox, which is the physical reality of fitting a real spring tank and its drive circuitry into a pedal; That Pedal Show still described it as surprisingly compact for a real spring unit⁷.

Gearnews listed the price at launch as $348.00, also given as £315.00 or 369.00€ at Thomann, with an MSRP of EUR 379⁵³. For US customers, Echo Fix's product page states the checkout price is all inclusive, with tariff and customs charges covered by Echo Fix via express courier¹.

What reviewers said

Coverage of the EF-P2 has been positive. Pedal of the Day's verdict:

Pedal of the Day, September 2023⁴

Gearnews highlighted the studio angle, suggesting it could be a great studio tool for anyone who needs the vintage spring style of effect, and more natural sounding than a plugin in a DAW³. That Pedal Show put it in the same conversation as the Surfy Bear Metal Reverb, Crazy Tube Circuits White Whale V2, Carl Martin Headroom and Danelectro Spring King when comparing real spring reverb pedals in June 2024⁷.

For more on the effect type generally, see reverb pedals.

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