Mastro Valvola LEM - What To Know & Where To Buy

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 17, 2026.

Store

Reviews

Price

$325.00 1 available Used

View Deal

Average Price: $325

High-end/Boutique

$100

$251+

Price Tier

In the Delay Effects Pedals category, Mastro Valvola LEM is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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The LEM is a multi-head delay pedal with 8 effect modes, designed to inspire dreamy and experimental ambiances. While playing with this effect, it's easy to run into unique, hypnotic or unexpected sound environments like shimmering repeats, reverse delays, multi-head modulations, pitch shifting, lo-fi sounds and more.

Product specs

Brand	Mastro Valvola
Model	LEM Lysergic Emotions Module
Finish	Black, Silver / Black
Year	2019 - 2025
Made In	Italy
Categories	Delay Pedals
Pedal Format	Standard

FAQs

What type of delay effects does the Mastro Valvola LEM offer?: The Mastro Valvola LEM provides a range of delay effects, including analog-style warmth and digital clarity, allowing for versatile soundscapes suitable for various musical genres.
Is the Mastro Valvola LEM suitable for live performances?: Yes, the Mastro Valvola LEM is designed for live performances, offering easy-to-use controls and robust construction to handle the demands of gigging musicians.
Can the Mastro Valvola LEM be powered with a standard 9V power supply?: Yes, the Mastro Valvola LEM requires a standard 9V DC power supply, making it compatible with most pedalboard power setups.
Does the Mastro Valvola LEM have tap tempo functionality?: Yes, the Mastro Valvola LEM features tap tempo, allowing users to sync their delay times easily with the tempo of the music during performances.
How does the Mastro Valvola LEM compare to other delay pedals?: The Mastro Valvola LEM stands out with its unique combination of analog warmth and digital precision, offering a broad palette of delay tones that cater to both traditional and experimental sound design.

Videos

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aBunchOfPedals

Mastro Valvola - Lysergic Emotions Module (LEM)

aBunchOfPedals

MASTRO VALVOLA LEM

Mike Hermans

Mastro Valvola Lysergic Emotions Module Delay | Secret Weapons Demo and Review

Mark Johnston

Mastro Valvola LEM Granular Multi Delay

Living Room GD

Mastro Valvola LEM | Lysergic Emotions Module Delay

Eric Merrow

Mastro Valvola LEM - Multi head delay modes

Mastro Valvola pedals

Ambient Sketch 044 - Mastro Valvola Lysergic Emotions Module (LEM)

Ambient Endeavors

Mastro Valvola - Lysergic Emotions Module (LEM)

Destroying Amps Gear Demos

Mastro Valvola LEM. Shimmer Mode with Bit Crusher.

Mastro Valvola pedals

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mastro Valvola LEM.

Features and functionality

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The LEM offers eight unique programs, such as reverse, sub-octave, and shimmer, providing versatile soundscapes beyond traditional delay effects.
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The 5th mode setting with spec at 11 o’clock, delay at 2 o’clock, and feedback at 10 o’clock creates a "neon space" sound.
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The Multi-Wow setting with the WOW just below half and wet lower than dry mimics a reverb effect, suitable for blues/jazz/soul.
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Low Shim mode acts as a low-octave reverb, while LFO Reverse-Vibrato mode provides escalating octaves for textural variation.
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Use cases and applications

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The pedal excels in creating ambient layers, with the reverse effect being particularly noted for its dreamy quality when the filter is adjusted.
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The LEM is ideal for layering textured chord progressions, making it a favorite for musicians looking to add depth to their compositions.
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Combining the LEM with a simple delay enhances its effectiveness, allowing for more intricate layering.
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The LFO Rev-4 Pole Filter with low Special and Delay settings delivers a glitchy delay with slow sweeps.
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User experience

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Owners find the bitcrush effect surprisingly useful, especially when combined with filtering, contrary to expectations of it being gimmicky.
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Mods and upgrades

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Using a Malekko Lil Buddy footswitch with the expression jack allows for dynamic control over parameters like delay time and feedback escalation.
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Using a TRS footswitch in the Control jack can max six knob parameters, offering dynamic sound shifts like pitch changes.
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Comparisons

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Users who found the Red Panda Tensor complex appreciate the LEM's straightforward interface and immediate usability across its settings.
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Critic Reviews

Mastro Valvola LEM Review – Sound Shoppe nyc

soundshoppe.nyc

Mastro Valvola's LEM is a delightful surprise, boasting sleek design and an intuitive interface that makes it easy to navigate through its various modes. While the learning curve can be slightly steep at first, the pedal ultimately delivers a range of captivating sounds—from ambient textures to vibrant reverse effects. Highlights include the beautiful Lo-Fi Multi setting, which captures that nostalgic vibe perfectly. However, not every mode hits the mark; some settings, particularly those relying on bit-crushing, may not appeal to every player. Overall, the LEM shines as a versatile tool for both stage and studio, making it a worthy addition to any guitarist's arsenal.

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Full Review

Reviewed: Mastro Valvola Effects Pedals - Mixdown Magazine

mixdownmag.com.au

Mastro Valvola's LEM is a standout in the realm of ambient effects, offering a rich array of delay options that can be both complex and rewarding. Its handcrafted Italian design is as striking as its sound, making it a must-try for any serious musician. However, the initial learning curve may deter those less inclined to dive deep into its features. Nevertheless, its warm tones and versatile presets make it a worthy investment for ambient enthusiasts. Overall, the LEM solidifies Mastro Valvola's reputation as a boutique powerhouse, though its complexity may not suit everyone.

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Full Review