ThorpyFX The J Analogue Amp Emulator Pedal

£329.00

ThorpyFX will not fail to impress. The ThorpyFX The J Analogue Amp Emulator Pedal in Guitar Pedals is New, in stock, and ready to ship with fast, reliable delivery across the UK, Ireland, and Europe. For more details within Guitar Pedals, additional Preamp Pedals options, full specifications, demos, images, videos, and secure online ordering, read on below. THE J is the second pedal in our “Analog amp emulator” series. This concept aims to capture what you hear from an amplifiers. I’ve been friends with Jesse Hoff for years, several years ago I cheekily suggested I’d like to capture what his…

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Description

ThorpyFX will not fail to impress. The ThorpyFX The J Analogue Amp Emulator Pedal in Guitar Pedals is New, in stock, and ready to ship with fast, reliable delivery across the UK, Ireland, and Europe. For more details within Guitar Pedals, additional Preamp Pedals options, full specifications, demos, images, videos, and secure online ordering, read on below.

THE J is the second pedal in our “Analog amp emulator” series. This concept aims to capture what you hear from an amplifiers. I’ve been friends with Jesse Hoff for years, several years ago I cheekily suggested I’d like to capture what his flagship Lazy J the “J20” sounds and feels like. To my delight Jesse agreed, and we began working our magic together. In the pedal development we made sure that the enhanced chewy tweed tones of the J20 were covered tonally but as always, we went further than the initial scope of design. Fitted with a high-quality transformer, the pedal reacts to your playing and overdrives and feels like a full-size amplifier.

THE ”J” as an Analog amp emulator can work fantastically well with your existing amp, your existing pedals and it integrates easily into your current rig. You can use it to create beautiful, enhanced tweed “LAZY J – J20” vintage amp sounds or craft your own sound. Tested worldwide during its development on the biggest of stages, you can be confident the “J” will deliver.

CONTROLS

  • LEFT FOOTSWITCH: ON/OFF. Turns the pedal on and off, true bypass.
  • RIGHT FOOTSWITCH: Switches between the Normal and Bright Channel. 
  • OUTPUT: This is the Master Volume and controls overall output.
  • RESPONSE: A subtle presence adjustment control.
  • SUPPLY: Emulates the Voltage attenuation control in the J20- Full clockwise is full voltage, anything below this emulates voltage attenuation.
  • NORMAL: Controls the volume/gain for the normal channel.
  • TONE: This allows you to dial in the EQ you’d like for the pedal, from dark to strident.
  • BRIGHT: Controls the Volume/Gain for the Bright channel.
  • X / Y SWITCH: This allows you to select what emulated input valve you want, 12AX7 for medium gain tones and 12AY7 for lower gain drive.

POWER: THE J is designed to be powered by a 9V DC centre-negative 2.1mm power supply. Internally the voltage is bumped up to 18V. Do not attempt to use this pedal with other voltages or polarities. We have power protection circuitry in our pedals and use of any other voltages will shut the pedal down and require return to ThorpyFx HQ for repair. This will not be covered under warranty.

Key Features

  • Analogue Amp Emulator pedal based on the Lazy J J20 valve amp
  • Footswitchable Normal and Bright channels
  • Thorpy Quality – Built to the exact specifications, tolerances and extremely high standards set out by Adrian Thorpy, The J is designed to offer reliable, consistent and offer low-noise tones gig after gig.

Specifications

  • Size: (W)100mm x(L)125mm x(H)53mm (top of Knobs)
  • Power: 9v
  • Current Draw: 50mA
  • True Bypass? Yes

Additional information

Weight 0.8 kg

About the manufacturer

ThorpyFX

ThorpyFX are known for making standout effects pedals and more. Founded with a passion for tone and innovation, their gear has shaped countless records and players’ sounds. Look out for their iconic designs and flagship models — they’ve earned a reputation for reliability and creativity.

More info about this Product

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.

Preamp Pedals

Preamp pedals are designed to shape and boost a guitar’s core tone, often acting as the front end of an amplifier or as a complete amp-style sound on a pedalboard. They can add clean gain, warmth, EQ control, or amp-like drive, and are commonly used to improve signal strength, push an amp harder, or run directly into a power amp or recording interface. Understanding output level, EQ controls and how they interact with other pedals helps players use preamp pedals effectively in both live and studio setups.

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Amp

An amp is an amplifier used to boost the signal from a guitar and shape its overall tone and volume. It plays a major role in how a guitar sounds, influencing everything from clean clarity to natural overdrive and distortion, and is a core part of any guitar setup for both practice and live performance.

Analogue

Analogue equipment uses continuous electrical signals rather than digital processing to shape and produce sound. In music gear, analogue circuits are found in pedals, amplifiers, and effects that rely on physical components such as transistors, valves, resistors, and capacitors.

Analogue sound is often described as warm, organic, and responsive, with natural saturation and subtle imperfections that react to playing dynamics. It is valued for its feel and character, particularly in overdrive, fuzz, modulation, and classic effects where musical interaction is more important than precision.

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