Skip to main content
MusicRadar MusicRadar The No.1 website for musicians
UK EditionUK US EditionUS AU EditionAustralia SG EditionSingapore
Sign in
  • View Profile
  • Sign out
  • Artist news
  • Music Gear Reviews
  • Synths
  • Guitars
  • Controllers
  • Drums
  • Keyboards & Pianos
  • Guitar Amps
  • Software & Apps
  • More
    • Recording
    • DJ Gear
    • Acoustic Guitars
    • Bass Guitars
    • Tech
    • Tutorials
    • Reviews
    • Buying Guides
    • About us
Don't miss these
Lag HyVibe HV10ACE
Acoustic Guitars “Powerful, extremely versatile and creatively refreshing, it offers a ton of inspiration if you click with it”: LAG HyVibe 10 HV10ACE review
Line 6 Helix Stadium
Guitars Could the Line 6 Helix Stadium Floor be a serious rival to the Quad Cortex?
ring stinger
Tech Behringer clones the Lovetone Ring Stinger, a cult classic ring mod/fuzz pedal heard on Radiohead's Kid A
Harley Benton NAMM 2026 releases include left-handed options on its V-style electric and offset bass guitars, fresh finish options for the SC single-cuts, and new colours for its HSS S-style
Guitars Harley Benton’s 2026 mega-drop: Metallica makeovers, fresh colours and a baritone SC Custom III, all-solid acoustics for under $250 and more
Cherry Audio SH-MAX
Soft Synths “Offers power, warmth, charm and usability, in a highly convincing virtual analogue reproduction, with real heart and soul”: Cherry Audio SH-MAX review
Neural DSP Quad Cortex Mini
Guitar Pedals "It’s the full power of the Quad Cortex, just in a smaller box": Neural DSP Quad Cortex mini review
An UDO Super Gemini synthesizer on a white table
Synths Best synthesizers 2026: Top analogue, digital, mono and polysynths
Nord Piano 6
Keyboards & Pianos Best stage pianos 2026: Our pick of the finest keyboards for live performance
Line 6 Helix Stadium XL
Guitar Pedals "The tones may not quite be best of the lot, but it's comfortably the easiest and most enjoyable modeller to use": Line 6 Helix Stadium XL review
Arturia's Efx Ambient from FX Collection 6, being used in a studio
Tech Arturia's FX Collection 6 adds an ambient plugin specialising in "novel, emotive textures" and a souped-up H910
Neural DSP Quad Cortex
Guitar Pedals Best multi-effects pedals: Our pick of the best all-in-one guitar FX modellers
ADDAC System 814 Stereo Matrix Mixer
Synths “A joy to use, offers some interesting opportunities for patching and can grow with your rig too”: ADDAC System 814 6x6 Stereo Matrix Mixer review
NAMM 2026
Tech NAMM 2026: rolling news from the world's biggest music-making gear show
Hottest music tech gear of NAMM
Tech The best music tech gear of NAMM 2026: Epic polys, acoustic synths, budget samplers, a Behringer Juno and more
A Spark Link receiver in a Spark Mini practice amp
Guitars Best guitar wireless systems 2026: Cut the cord and liberate your playing today
More
  • NAMM 2026: as it happened
  • Best NAMM tech gear
  • Joni's Woodstock
  • 95k+ free music samples
  1. Guitars
  2. Guitar Pedals

Review round-up: offbeat modulation pedals

News
By Alex Lynham ( Total Guitar ) published 26 February 2019

Inspirational options from Keeley, Pigtronix, Boss and Valeton

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Need some new ideas? Got some cash to burn? Whatever the reason, we’ve got just the thing. 

Don't Miss

The 10 best chorus pedals for guitar

This rogue’s gallery of modulation pedals will do it all, from boutique modulation to analogue synthesis. 

With the Dimension C, we’re seeing the return of perhaps the best stompbox chorus ever. Not only that, but in this Waza reissue, a switch to change it over to a SDD-320 mode, emulating the rack effect the original was based on. The SDD-320 fetches astronomical prices on the used market, so its inclusion is a win-win. 

Meanwhile, with the Coral, we’ve got a wallet-friendly, pocket-sized do-it-all box to spark new song ideas while you’re noodling. So whether you’re curious about phaser, flanger or ring modulator, step on up! 

Page 1 of 5
Page 1 of 5
Keeley Bubble Tron

Keeley Bubble Tron

This multi-function modulation pedal is aimed at guitarists who want to box off several modulation options with a single pedal. 

With a filter, phaser and flanger, the core filter-based modulation sounds are all accounted for and deliver pretty much what you’d expect. There are some pleasant surprises at the extreme ends of the controls for rate and depth, with psyched-out, weird sounds and artifacts aplenty, but most people will be after belt-and-braces decent mod settings, and those are here too. 

We found the phaser most compelling with the depth and speed pulled back for some '70s prog vibes. 

4 out of 5

Page 2 of 5
Page 2 of 5
Boss DC-2W

Boss DC-2W

The original Boss Dimension C was a stereo chorus that had the relatively unique distinction of using two parallel analogue BBD paths to create its sound. 

That lush, 80s chorus is delivered in spades by the Dimension C, while updates have found issues with the original – noise and low output volume - largely mitigated. Mode 1 is great for subtle, Siamese Dream-style Smashing Pumpkins tones, while at the other extreme in Mode 4, think She Sells Sanctuary by The Cult. 

It’s an expensive beast, but this is a unique chorus sound, magnificently executed, and available again at long last. 

4.5 out of 5

Page 3 of 5
Page 3 of 5
Pigtronix Ringmaster Analog Multiplier

Pigtronix Ringmaster Analog Multiplier

The Ringmaster is an analogue synthesiser and ring modulator with a ton of controls. 

Even without diving into the different carrier and CV options, the front panel can be a little overwhelming and takes some time to dial in a good sound. Fuzzy, grainy ring mod tones are the easiest to tap, but with some tweaking there’s also tremolo and sample-hold sounds possible, with harmonised notes dancing around the input signal. 

It feels at times like it might better suit a keyboard rather than a guitar, but it’s hard to think of a more feature-rich ring modulator on the market. 

4 out of 5

Page 4 of 5
Page 4 of 5
Valeton Coral MDR

Valeton Coral MDR

If what you’re looking for is a pedal to trigger inspiration, then it’s hard to go wrong with the Valeton Coral MDR. 

MDR stands for modulation, delay, reverb, and this compact box gets every last mile out of the digital chip nestled inside. There are eight patches, with a further eight accessible via a toggle switch, and the footswitch even works for tap-tempo, though it’s a hair short of foolproof. 

Some sounds are gimmicky, but the sine and square wave tremolo are great, and both the phaser and reverb ‘A’ are decent. It’s fiddly because of its size, but the core sounds aren’t bad at all - so at this price, why not? 

4 out of 5

Page 5 of 5
Page 5 of 5
Alex Lynham
Alex Lynham

Alex Lynham is a gear obsessive who's been collecting and building modern and vintage equipment since he got his first Saturday job. Besides reviewing countless pedals for Total Guitar, he's written guides on how to build your first pedal, how to build a tube amp from a kit, and briefly went viral when he released a glitch delay pedal, the Atom Smasher.

Stay up to date with the latest gear and tuition. image
Stay up to date with the latest gear and tuition.
Subscribe and save today!
More Info
Read more
Neural DSP Quad Cortex
Best multi-effects pedals: Our pick of the best all-in-one guitar FX modellers
 
 
The Boss PX-1 Plugout FX is a white compact series Boss pedal with three blue dials with silver inserts, and has eight assignable presets so that it can be any one of 16 classic pedals.
The Boss PX-1 is a treasure trove of classic and contemporary Boss effects pedals. Here's everything you need to know about the compact chameleon stomp box
 
 
Boss GX-1 Guitar Effects Processor
Boss tackles budget rivals head-on with feature-packed entry-level GX series multi-fx pedals for guitar and bass
 
 
TC Electronic Polytune next to a Gibson Les Paul
Best guitar tuners 2026: From tuning pedals and clip-ons, to guitar tuning apps
 
 
ring stinger
Behringer clones the Lovetone Ring Stinger, a cult classic ring mod/fuzz pedal heard on Radiohead's Kid A
 
 
Keeley Electronics Nocturne: this new stereo reverb is the latest signature pedal for Andy Timmons and has a dark metallic blue enclosure with a similar control surface to his Halo Core pedal.
“I turn this thing on, I don’t want to stop playing”: Keeley Electronics has made Andy Timmons fall in love with reverb with his new signature Nocturne pedal
 
 
Latest in Guitar Pedals
Line 6 Helix Stadium
Could the Line 6 Helix Stadium Floor be a serious rival to the Quad Cortex?
 
 
ring stinger
Behringer clones the Lovetone Ring Stinger, a cult classic ring mod/fuzz pedal heard on Radiohead's Kid A
 
 
Line 6 Helix Stadium XL
"The tones may not quite be best of the lot, but it's comfortably the easiest and most enjoyable modeller to use": Line 6 Helix Stadium XL review
 
 
EarthQuaker Devices ZEQD-Pre Tube Pre Amp
"The EF86 tube is often described as hi-fi, and honestly, that's the perfect way to describe what's coming out of this thing": EarthQuaker Devices EQD ZEQD-Pre review
 
 
All the best guitar gear from this year's NAMM Show
The best new guitar gear of NAMM 2026: More effects, more amps, more guitars and more tech than ever
 
 
Polyend Endless customisable effect pedals
Polyend Endless is a customisable stompbox with a text-to-effect generator that will create any effect you describe
 
 
Latest in News
SANTA CLARA, CALIFORNIA - FEBRUARY 08: Charlie Puth performs the National Anthem during Super Bowl LX at Levi's Stadium on February 08, 2026 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
How Charlie Puth used jazz harmony to “pull off something pretty spectacular” at the Super Bowl
 
 
Deals of the week
MusicRadar deals of the week: Score over $700 off PRS, $200 off Ludwig drums and massive discounts on software and recording gear
 
 
MIAMI GARDENS, FLORIDA - OCTOBER 18: (EDITORIAL USE ONLY. NO STANDALONE PUBLICATION USE (NO SPECIAL INTEREST OR SINGLE ARTIST PUBLICATION USE; NO BOOK USE)) Taylor Swift performs onstage during The Eras Tour at Hard Rock Stadium on October 18, 2024 in Miami Gardens, Florida. (Photo by John Shearer/TAS24/Getty Images for TAS Rights Management)
Chris Lake said yes to a Taylor Swift remix before he'd even heard the stems - but then had to make it
 
 
Arturia's Efx Ambient from FX Collection 6, being used in a studio
Arturia's FX Collection 6 adds an ambient plugin specialising in "novel, emotive textures" and a souped-up H910
 
 
frozen
Supermarket goes viral for the chilled ambient drones of its freezer section
 
 
Paul Gilbert and Joe Satriani jam at the 2012 Marshall 50 Years of Loud Live anniversary concert
Paul Gilbert on why it can be so hard to resist the urge to shred
 
 

MusicRadar is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

Add as a preferred source on Google
  • About Us
  • Contact Future's experts
  • Terms and conditions
  • Privacy policy
  • Cookies policy
  • Advertise with us
  • Accessibility Statement
  • Careers

© Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885.

Please login or signup to comment

Please wait...