Boss MD-500 Modulation Effects Processor

As an affiliate partner, we may earn a small commission when you buy through our links — at no extra cost to you.

£389.00

This is the Boss MD-500 Modulation Effects Processor from Boss, listed in Guitar Pedals on guitars pedals amps and stuff.. Read More below.

Description

The Boss MD-500 Modulation Effects Processor is a versatile pedal which provides an extensive range of modulation effects featuring effects with intensive programming parameters for a wide variety of sounds. Each algorithm has been designed specifically for the RV-500 providing incredibly unique effects while enhancing the popular modulations such as chorus phase flange vibrato and tremolo. Switch to A/B simul mode to use two patches at the same time and connect your favourite gain/drive to the FX looper and place it anywhere in the chain. Powered by advanced Boss technology the MD-500 Modulation pedal is perfect for adding extra depth and dynamics to your sound.

Related videos

About the manufacturer

Boss

Boss is a Japanese company founded in 1973 and is one of the most respected names in the world of guitar effects and amplification. Known for their compact stompbox pedals, Boss has defined the sound of countless musicians with classics like the DS-1 Distortion, CE-2 Chorus, and DD-3 Delay. Their range now includes multi-effects processors, loop stations, amplifiers, and recording tools, all built with the brand’s trademark durability and reliability. Favoured by beginners and professionals alike, Boss products are a staple on pedalboards across the UK, offering dependable performance and iconic tone shaping for every style of music.

More info about this Product

Chorus Pedals

Guitar Pedals

Guitar pedals are compact effects units that shape and enhance a guitar’s sound, sitting between the instrument and the amplifier. They include gain pedals like overdrive and distortion, modulation effects such as chorus and tremolo, time-based effects like delay and reverb, and essential utilities including tuners, compressors and loopers. Understanding basic things such as pedal type, signal order, power requirements and intended use helps players choose pedals that suit their style, setup and playing environment.

More Gear like this

Chorus

Chorus is a modulation effect that thickens and widens a sound by duplicating the signal, slightly detuning it, and modulating its pitch over time. This creates the impression of multiple instruments playing together, resulting in a rich, shimmering, and spacious tone.

It is commonly used on guitar, bass, and keyboards to add movement and depth, working especially well with clean or lightly driven sounds. Chorus became strongly associated with 1980s music but remains widely used across pop, rock, ambient, and modern styles for its ability to make a sound feel fuller and more animated.

Guitar Effects Pedals

Guitar Pedal

Tremolo

Tremolo is an effect that creates a rhythmic pulsing by varying the volume of the guitar signal up and down. It can be subtle and smooth or choppy and pronounced, adding movement and texture to clean tones and is commonly associated with classic amps and vintage-style sounds.

Vibrato

Vibrato is an effect that creates a subtle or pronounced pitch variation by modulating the signal up and down over time. Unlike chorus or tremolo, vibrato affects pitch only, producing a wavering or shimmering sound without changing volume.

It is used to add movement, expression, and a sense of warmth to a sound, working especially well on sustained notes and chords. Vibrato can range from gentle and musical to bold and psychedelic, and is commonly found in vintage amplifiers, modulation pedals, and classic studio effects.