Pricing and availability

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Sweetwater
5.0 (13)
$229.99 $199.00 $30.99
Amazon
4.4 (29)
$199.00
Reverb
5.0 (33)
$199.00 New
$119.00 Used
Thomann
4.6 (39)
$205.00

Average Price: $192

High-end/Boutique

$50

$176+

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High-end

Price History

Based on price data from 3 merchants for "J Rockett Audio Designs .45 Caliber". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Step into the golden era of rock with the J Rockett Audio Designs .45 Caliber Overdrive Pedal—a meticulously crafted tribute to the iconic 1962 JTM 45 amplifier. This pedal is your ticket to the crunchy rhythm tones that defined legends like Malcolm Young and Pete Townshend, distilling the essence of those roaring stacks into a compact, pedalboard-friendly package. With a straightforward interface featuring controls for Gain, Treble, and Bass, the .45 Caliber allows you to sculpt your sound from a smooth bluesy breakup to a full-throttle, wide-open roar.

Its true bypass switching ensures your original tone remains pristine when the pedal is disengaged, while the innovative Speed Switch system means you can replace the footswitch effortlessly, keeping you gig-ready at all times. Whether you're playing in your garage or on stage, the .45 Caliber infuses your signal with the distinctive British saturation that electrified the '60s rock scene.

Built to withstand the rigors of performance, this pedal is housed in a robust metal casing and is proudly hand-built in the USA. Power it with a standard 9-volt battery or adapter, and let the .45 Caliber redefine your classic rock sound.

Key Features:

  • Emulates the sound of a cranked 1962 JTM 45 amp
  • Simple 2-band EQ for effective tone shaping
  • Versatile Gain control from bluesy to full-on crunch
  • True bypass switching to preserve your original tone
  • Solderless Speed Switch replacement system for quick footswitch swaps
  • Metal casing for durability
  • Powered by a 9V battery or DC supply
  • Hand-built in the USA

Product specs

Pedal Type JTM Overdrive
Analog/Digital Analog
Inputs 1 x 1/4"
Outputs 1 x 1/4"
True Bypass Yes
Power Source 9V DC power supply (sold separately)
Batteries 1 x 9V
Power Usage 8mA
Height 1.2"
Width 2.3"
Depth 4.0"
Weight 1.6 lbs.

FAQs

What kind of tones can I expect from the J Rockett Audio Designs .45 Caliber Overdrive Pedal?

The .45 Caliber is modeled after the classic JTM45 amplifier, delivering a warm, British-style overdrive with a rich midrange and smooth top-end, perfect for classic rock and blues tones.

Is the J Rockett Audio Designs .45 Caliber Overdrive Pedal true bypass?

Yes, the .45 Caliber Overdrive Pedal features true bypass, ensuring that your guitar's tone remains unaffected when the pedal is not engaged.

Can the .45 Caliber Overdrive Pedal be powered by a battery?

Yes, the pedal can be powered by one 9V battery, in addition to a 9V DC power supply (sold separately).

How does the .45 Caliber Overdrive compare to other J Rockett pedals?

The .45 Caliber is specifically designed to emulate the JTM45 amp sound, offering a distinct British overdrive tone, while other J Rockett pedals may focus on different amp styles or tonal characteristics.

Is the J Rockett Audio Designs .45 Caliber Overdrive Pedal suitable for live performances?

Yes, with its robust build and true bypass switching, the .45 Caliber is well-suited for live performances, providing reliable and consistent overdrive tones.

ProGuitarShopDemos

ProGuitarShopDemos

J Rockett Audio Designs .45 Caliber

Video thumbnail for J Rockett Audio Designs .45 Caliber by ProGuitarShopDemos

J Rockett Audio Designs .45 Caliber

ProGuitarShopDemos

ProGuitarShopDemos

Video thumbnail for J. Rockett Audio Designs .45 Caliber Overdrive Pedal | N Stuff Music by N Stuff Music

J. Rockett Audio Designs .45 Caliber Overdrive Pedal | N Stuff Music

N Stuff Music

N Stuff Music

Video thumbnail for INSTANT, VINTAGE MARSHALL AMP TONES IN A PEDAL?! 45 Caliber - J Rockett Audio Designs Demo by HarryAndAGuitar

INSTANT, VINTAGE MARSHALL AMP TONES IN A PEDAL?! 45 Caliber - J Rockett Audio Designs Demo

HarryAndAGuitar

HarryAndAGuitar

Video thumbnail for J.  Rockett Audio Designs 45 Caliber - Pedal Demo by SRGuitar

J. Rockett Audio Designs 45 Caliber - Pedal Demo

SRGuitar

SRGuitar

Video thumbnail for J Rockett Audio Designs .45 Caliber - ToneJunkie TV by ToneJunkie TV

J Rockett Audio Designs .45 Caliber - ToneJunkie TV

ToneJunkie TV

ToneJunkie TV

Video thumbnail for J Rockett Audio Designs .45 Caliber OverDrive - Marshall JTM 45 IN A BOX by Buddy Blues

J Rockett Audio Designs .45 Caliber OverDrive - Marshall JTM 45 IN A BOX

Buddy Blues

Buddy Blues

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J.Rockett Audio Designs .45 Caliber Overdrive

J. Rockett Audio Designs

J. Rockett Audio Designs

Video thumbnail for J. Rockett Audio Designs - Animal vs. HRM (Hot Rubber Monkey) vs .45 Caliber by Haiko Heinz

J. Rockett Audio Designs - Animal vs. HRM (Hot Rubber Monkey) vs .45 Caliber

Haiko Heinz

Haiko Heinz

Reviews

PROS

  • Delivers classic AC/DC and Malcolm Young tones effectively

  • Stacks well with other pedals, especially K-type and clean boosts

  • Natural integration into amp's sound without altering original tone

  • Exceptional dynamic response to guitar volume and pick attack

  • Versatile EQ settings suit various guitar and amp types

  • High-quality sound, doesn't feel artificial compared to other OD pedals

  • Top-mounted jack ports save space on pedalboards

  • Effective across a wide gain range without losing clarity

  • Maintains punch and clarity with single coils and humbuckers

CONS

  • Knobs may shift position when transported in a bag

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about J Rockett Audio Designs .45 Caliber.

Features and functionality

  • Owners appreciate the pedal's ability to maintain clarity when adjusting the bass and treble knobs, avoiding muddiness and brittleness at extreme settings.

    Source

Comparisons

  • Users note the .45 Caliber's design is similar to the Timmy pedal, offering a comparable transparent drive experience with a different tonal character.

    Source
  • The pedal is often compared to Marshall emulators but is said to exceed this label, offering more tonal capabilities depending on the rig setup.

    Source

Use cases and applications

  • The pedal is highlighted for its versatility, effectively covering a range from light crunch to full distortion, making it suitable for various musical styles.

    Source

User experience

  • Many find it challenging to produce a bad sound, with 90% of the tone knob's range being praised for its quality.

    Source

Critic Reviews

J Rockett Audio Designs .45 Caliber review on pedal-of-the-day.com

pedal-of-the-day.com

The J Rockett Audio Designs .45 Caliber Overdrive shines as a versatile pedal that captures the essence of the 1962 Marshall JTM 45, delivering iconic AC/DC tones with ease. It's praised for its ability to provide both low gain and soaring lead tones, making it a valuable asset for rock and new country genres. The pedal integrates seamlessly with clean amps, enhancing them without unwanted coloration. Its even sound and effective EQ make it ideal for rhythm playing, ensuring clarity in every chord and note. However, the review doesn't highlight any significant drawbacks, suggesting it's a solid choice for those seeking a vintage Marshall-inspired sound.

positive

J Rockett Audio Designs Tour Series .45 Caliber review | MusicRadar

musicradar.com

The J Rockett Audio Designs .45 Caliber pedal impresses with its dedication to replicating the classic Marshall 1962 JTM45 tone, making it a stellar choice for classic rock enthusiasts. Drawing inspiration from iconic sounds like Malcolm Young's and Pete Townshend's, it excels in delivering a dynamic and responsive tonal experience, especially when paired with vintage guitars like a '67 Gibson SG Jr. Despite its ambition, the pedal is praised for achieving a sound reminiscent of a great 60s valve amp, complete with satisfying compression for lead play. The review is overwhelmingly positive, noting no cons, and positions the .45 Caliber as a top contender for those seeking authentic rock tones.

positive

5.0 out of 5

Based on 1 Review and 2 Ratings

5 star
4 star
3 star
2 star
1 star
rock_season

Great pedal

I really like this pedal. It gives the guitar a Malcolm Young sort of tone

Artist usage

Add artist
See how Keith Urban uses J Rockett Audio Designs .45 Caliber

Keith Urban

Guitarist, Bassist

Artists of Then, Now & Forever

...
Verified via YouTube

Part of his rig before he switched to Fractal .

See how Michael Lee Firkins uses J Rockett Audio Designs .45 Caliber

Michael Lee Firkins

Guitarist

The Clinton Administration

...
Verified via Photo

Michael Lee Firkins has confirmed the use of the J Rockett Audio Designs .45 Caliber pedal in his setup through an Instagram post. In the caption, he explains how he achieves his sound by setting his Marshall amp clean and using various pedals, including those from J Rockett Audio Designs.

See how R.J. Ronquillo uses J Rockett Audio Designs .45 Caliber

R.J. Ronquillo

Guitarist, Podcasters & Streamers

Stone Sour

...
Verified via YouTube

At 22:23 in the video titled "The PERFECT Pedal Platform Amp | Fender Hot Rod Deville ML Michael Landau" by R.J. Ronquillo on YouTube, R.J. Ronquillo can be seen stepping on the J Rockett Audio Designs .45 Caliber pedal, confirming its use in his setup.

See how E. Edwards uses J Rockett Audio Designs .45 Caliber

E. Edwards

Guitarist, Music Producer

...
Verified via YouTube

In the YouTube video titled "Pedalboard Walkthrough - E Edwards," posted by E. Edwards, he provides a detailed explanation of his pedal board as of May 30, 2020. At the 0:27 mark, Edwards clearly identifies and showcases the J Rockett Audio Designs .45 Caliber pedal positioned on the bottom row of his pedal board.

Album Usage

The J Rockett Audio Designs .45 Caliber has been featured on the following albums:

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use J Rockett Audio Designs .45 Caliber, it is most commonly used with the following gear.

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