Fender and reverb go together like gumbo and rice. Historically, the spring tanks in the company’s amplifiers and tube-driven outboard units have defined the Fender reverb sound. But in 2018, when Fender released the Marine Layer digital reverb, it did not include a spring reverb emulation. The new Dual Marine Layer doesn’t have a spring emulation either. Instead, it’s brimming with sounds and functions well-suited for less retro-reverb expressions, including thick chorus textures and shimmer reverb, and has a soft-relay sustain switch that enables momentary creation of ambient beds. It’s also capable of some very classy, subdued reverb colors, plus a few that can effectively stand in for spring and plate sounds in a pinch.


The Ring of Green

The Dual Marine Layer is clearly not a vintage design exercise. A switch on the pedal’s crown enables illumination of the LED position markers on the knobs—a real asset on dark stages. And like all new-generation Fender effects, the Dual Marine Layer comes in an anodized aluminum enclosure that bends (a bit too much, perhaps) to the tech-industry’s prevailing minimalist design ethos. And while the kelly green enclosure is more fun to look at than, say, an iPhone, it lacks the design inventiveness of an old Fender amp or one the company’s curvaceous, classic guitar designs.

Surprisingly, for a pedal of this size, the control layout and functions are pretty simple. The top row of knobs includes controls for damping (which darkens or brightens the reverb tails), reverb decay time, modulation intensity, and effect level, and is dedicated to reverb A. The second row of knobs, save for the sustain control, is identical and assigned to reverb B. A small 3-position toggle switch selects between hall, room, and shimmer reverb algorithms. The sustain knob controls the intensity of the reverb bed created by holding down the soft-relay momentary sustain footswitch.

Many players that turn to bigger stompboxes for deep functionality, programming capabilities, and scores of I/O and routing options may be puzzled by the size of the enclosure used here. There are no stereo I/O options, no MIDI or USB connectivity, no effects loop, and just three reverb modes. But in real-world performance and song-creation situations, the generous spacing between controls and switches—and the ease with which you can adjust and move between them without triggering something unintentionally—is invaluable. In this sense, the Dual Marine Layer is truly a performance-centric pedal.

More Space Than Surf

The Dual Marine Layer seems built primarily for contemporary reverb applications—the kind with extra-expansive, dramatic tendencies, replete with harmonic overtones. But while a dedicated spring reverb model is certainly missed here, there are many ways to extract mellow and more traditional textures.

The generous spacing between controls and switches—and the ease with which you can adjust and move between them without triggering something unintentionally—is invaluable.

The most conventional of the available voices—and perhaps the most forgiving—is the room reverb. It’s capable of very intimate, small-scale reverb sounds that don’t drown in harmonizing overtones and are less susceptible to digital artifacts. It’s also a great platform for exploring the Dual Marine Layer’s controls, which are sensitive, highly interactive, and capable of great nuance once you’re acquainted.

In room mode, setting the reverb time and effect level fairly high while keeping the dampening at brighter settings and the modulation to a minimum yields a pretty satisfactory approximation of vintage spring reverb. But if you use the damping control to darken the signal, take the level down, and reduce the delay time, you get a classy, subdued studio room reverb sound that’s a killer contrast with spring-style sounds in an A/B set up. Dial the modulation and the effect level back up again and you have a raft of chorus tones that a young Johnny Marr would love.

Hall mode’s expansiveness underscores the importance of the damping control. At darker damping settings, even long delay times and aggressive effect levels make the hall more evocative of a small but reflective chamber—lively, succinct, and a bit mysterious. Take the damping control to its brightest levels, however, and the little chamber becomes a jumbo jet hanger. The high-octave content in these extra-bright damping settings can make extreme reflections sound a bit too choral and twee at times. But the sensitivity and range of the time and level controls are such that middle-ground colors are abundant, varied, and easily transformed into chamber- and plate-style sounds.

Shimmer reverbs usually leave me cold. But here again, the range of the DML’s controls yield surprises. Dark damping settings and modest delay times de-emphasize the sometimes sizzling high overtones that can make shimmer verbs sound cheesy, yielding sounds like a long plate instead.

The Verdict

Once you get a hang of the Dual Marine Layer, it’s a pleasure to use. There are a few frustrating limitations considering the effect’s size. You can’t use different voices for reverbs A and B, for instance. And some prospective buyers will lament that Fender didn’t use the extra space to accommodate more presets or spring or reverse reverb emulations. On the other hand, the economical design makes the Dual Marine Layer extra easy to use and extra fun. And if you’re not obsessed with pedalboard space, you’ll find a trove of cool sounds to work with.

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