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
  • Guitars
  • Controllers
  • Drums
  • Keyboards & Pianos
  • Guitar Amps
  • Music Gear Reviews
  • Synths
  • Software & Apps
  • More
    • Recording
    • DJ Gear
    • Acoustic Guitars
    • Bass Guitars
    • Tech
    • Tutorials
    • Reviews
    • Buying Guides
    • About us
More
  • Bridge Over Troubled Water
  • World in Motion
  • 95k+ free music samples
  • The genius of Clive Davis
  1. Guitars
  2. Guitar Pedals

Six of the best 'amp in a box' pedals

News
By Guitarist
Published 24 February 2015

Pedals that deserve a Tolex finish

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

Catalinbread Wiio

Catalinbread Wiio

The stack of pedals designed to sound like classic amps has grown ever higher. Here's our pick of pedals that deserve a Tolex finish...

#1: Catalinabread Wiio

Capturing the brutal delivery of a 70s Hiwatt in a pedal seems like a tall order, but this pedal’s huge sound will come as a surprise.

It sounds best through an amp that can deliver some guts, too, of course – just don’t go expecting any sort of compressed, easy ride. Imagine being punched in the face with notes and enjoying it: you like that, don’t you?

Page 1 of 6
Page 1 of 6
Electro-Harmonix EHX Tortion

Electro-Harmonix EHX Tortion

This is based on a multi-stage valve amp, albeit using JFET transistors instead of valves.

There’s a multi- position ‘pre-gain’ switch to take you from cleans through to full-on saturation, plus powerful three-band EQ and an additional boost section with its own gain and master controls. Use it in front of an amp, or direct to a mixer thanks to the balanced XLR out with cabinet emulation.

4 out of 5

Read our full Electro-Harmonix EHX Tortion review

BUY: Electro-Harmonix EHX Tortion currently available from:
UK: Andertons Music | Thomann | Gear4Music | DV247
US: Sweetwater | Full Compass

Page 2 of 6
Page 2 of 6
Wampler Slostortion

Wampler Slostortion

There are plenty of Fender and Marshall amp-emulating pedals out there, so how about the sound of the fabled Soldano SLO100 into your own amp, with a separate clean boost section to boot?

It delivers edge and girth aplenty to go from classic-rock rhythms to huge, soaring leads. If 60s/70s rock tones are too classic for you, and metal’s too modern, you’ll like this a lot.

BUY: Wampler Slostortion currently available from:
UK: Andertons Music | Gear4Music
US: Sweetwater

Page 3 of 6
Page 3 of 6
Boss FBM-1

Boss FBM-1

Unlike all the other pedals on this page, this one uses digital technology to derive its sounds, based on a ’59 Fender Bassman (there’s also a ’65 Deluxe Reverb model).

It does a decent job of making any amp sound like the fabled tweed amp at home/ practice volumes, but is outshone by quality analogue pedals through high-end amps at gig volumes.

BUY: Boss FBM-1 currently available from:
UK: Gear4Music
US: Sweetwater | Full Compass

Page 4 of 6
Page 4 of 6
Randall RG13

Randall RG13

With a one-watt output stage, you could say that this pedal is an amp. It’s certainly a preamp: three independent channels covering clean to full-on gain tones, plus a switchable loop section.

You can connect direct to a guitar amp, and/or send a speaker- simulated signal straight to a live or recording desk. As with most Randall amps, hard rock and metal are well served by the RG13.

BUY: Randall RG13 currently available from:
UK: Thomann | DV247

Page 5 of 6
Page 5 of 6
Empress Effects Multidrive

Empress Effects Multidrive

Big ambition here with the promise of three different ‘amps’ used together in parallel.

You can have any combination of vintage overdrive, classic fuzz and the three-mode distortion section, plus three-band EQ and high/lo-pass filter options.

It’s all-analogue, with germanium diodes, FET distortion and LED clipping playing their parts in shaping the tones. Serious flexibility.

4.5 out of 5

Read our full Empress Effects Multidrive review

BUY: Empress Effects Multidrive currently available from:
UK: Thomann

Page 6 of 6
Page 6 of 6
Guitarist
Guitarist
Social Links Navigation

Guitarist is the longest established UK guitar magazine, offering gear reviews, artist interviews, techniques lessons and loads more, in print, on tablet and on smartphones
Digital: http://bit.ly/GuitaristiOS
If you love guitars, you'll love Guitarist. Find us in print, on Newsstand for iPad, iPhone and other digital readers

Read more
Neural DSP Quad Cortex
Guitar Pedals Best multi-effects pedals 2026: Our pick of the best all-in-one guitar FX modellers
 
 
Crazy Tube Circuits Triptychon
Guitars Crazy Tube Circuits’ Triptychon might just be the only pedal you need for classic rock
 
 
Three new additions to the $99 JHS Pedals range: Glitch Delay, Bit Crusher and Ring Modulator – all compact stompboxes with white enclosures and three knobs
Guitars Meet the $99 stompbox that’ll crush your bits – JHS expands its affordable 3 Series with three exotic effects for your pedalboard
 
 
Blackstar Beam Mini
Guitar Amps Best desktop amps 2026: Lightweight and portable practice solutions for guitarists of all abilities
 
 
Electro-Harmonix Dual Op-Amp Big Muff Pi 2
Guitar Pedals Electro-Harmonix Big Muff Pi 2 Dual Op-Amp Fuzz review
 
 
A Blackstar ID:X Floor Three multi-effects pedal and amp modeller on a worn, wooden floor
Guitar Pedals “An effortlessly usable unit that delivers dynamically playable sounds”: Blackstar ID:X Floor Three review
 
 
Latest in Guitar Pedals
Strymon TimeLine MX
Guitars Strymon supercharges its flagship delay – meet the TimeLine MX
 
 
Walrus Audio Lüm Texture Engine
Guitars Walrus Audio’s Lüm is a feature-packed “Texture Machine” for when your guitar tone feels predictable
 
 
Electro-Harmonix Dual Op-Amp Big Muff Pi 2
Guitar Pedals Electro-Harmonix Big Muff Pi 2 Dual Op-Amp Fuzz review
 
 
A Blackstar ID:X Floor Three multi-effects pedal and amp modeller on a worn, wooden floor
Guitar Pedals “An effortlessly usable unit that delivers dynamically playable sounds”: Blackstar ID:X Floor Three review
 
 
MusicRadar Guitar Gear Round-up June 2026
Guitars MusicRadar’s epic guitar gear round-up: June ’26 edit, ft. EHX, PRS, Fender’s mega-launch and more
 
 
Electro-Harmonix Pico Shimmer
Guitars EHX expands Pico series with a "cosmic reverb" for soundscape generation and otherworldly guitar tone
 
 
Latest in News
Este Haim performs onstage at The Kia Forum on October 09, 2025 in Inglewood, California. (Photo by Emma McIntyre/Getty Images for ABA)
Artists Este Haim says parental persuasion, Princess Peach and Tina Weymouth led her to the bass guitar
 
 
Piano and one hand
Keyboards & Pianos "A very determined young lady”: Meet the Northern Irish teenager who passed her Grade 8 piano – one handed
 
 
akai
Tech SampleRadar: 207 free '90s jungle samples
 
 
Frank Ferrer and Axl Rose of Guns N Roses performs onstage on Day 2 of the Download Festival at Donington Park on June 9, 2018 in Donington, England.
Drummers “Generous and super funny”: Who could ex-GNR drummer Frank Ferrer be talking about?
 
 
nopia
Tech We got an exclusive look at Nopia, the viral synth and "harmony machine" that broke the internet
 
 
David Byrne, lead singer and guitarist for the Talking Heads, works with record producer Brian Eno in a recording studio in Mexico.
Studios Talking Heads frontman David Byrne discusses treating the studio "like a playground" with Brian Eno
 
 

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 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...