The Volta Custom Jailbreaker is a boutique overdrive pedal handmade in Italy, designed to emulate the specific tone and dynamic response of a Marshall JTM45 "Bluesbreaker" combo amplifier1. It is an analog circuit, and it approaches that amp from a different angle than most pedals with the Bluesbreaker name.
A Bluesbreaker amp tone, not a Bluesbreaker pedal clone
Plenty of overdrives take their name from the same amp. The original Blues Breaker pedal, as Tone Island's buying guide puts it, was "designed to capture the sound of the JTM45 combo Clapton used on the Beano album (with John Mayall & The Bluesbreakers)"2. The Jailbreaker is not a copy of that pedal's circuit. RockBoard's PedalPedia states: "Rather than being a clone of the classic Bluesbreaker pedal circuit, this design focuses on capturing the power-amp saturation and tube-rectifier compression of the original amplifier"1. In practice that means the pedal is chasing what the amp's output stage and rectifier do to the signal, not what an early stompbox did.
Controls and channels
The Jailbreaker is a dual-channel overdrive. Its "Hot" channel provides stackable gain and has a dedicated level control for lead boosts, so it can be stacked on top of the main channel for solos1.
Two internal-style switches shape the feel of the drive:
- Tight switch: refines low-end clarity1
- Mojo switch: engages authentic vintage sag and harmonic richness1
Together they let a player dial between a firmer, tighter low end and a looser, more vintage-amp response, which is where the JTM45 character lives1.
Power and practicalities
The pedal runs on 9V DC, center negative, and draws 20mA1. That is within reach of any standard pedalboard supply, and the low current draw means it will sit comfortably on a daisy chain with other analog drives. For more on where a pedal like this fits, see the site's Overdrive Pedals page, or compare it with other Volta Custom drives such as the Volta Custom The Blue and the Volta Custom Black Tweed Plus, another amp-style drive from the same builder.
Videos
VOLTA Custom
The GasTube
R.J. Ronquillo
Questions
Is the Volta Custom Jailbreaker a Bluesbreaker pedal clone?
No. According to the maker's product page, rather than being a clone of the classic Bluesbreaker pedal circuit, the Jailbreaker's design focuses on capturing the power-amp saturation and tube-rectifier compression of the original Marshall JTM45 Bluesbreaker combo amplifier. It is aimed at the amp's tone and dynamic response rather than at reproducing an earlier overdrive pedal.
What does the Mojo switch do on the Jailbreaker?
The Jailbreaker has integrated Tight and Mojo switches. The maker says the Mojo switch engages authentic vintage sag and harmonic richness, while the Tight switch refines low-end clarity. Together they let a player shape how loose or tight the drive feels under the fingers.
Is the Volta Custom Jailbreaker analog?
Yes. The maker lists the Jailbreaker as an analog circuit, in line with its goal of emulating the tone and dynamic response of a tube combo amplifier.
What power supply does the Volta Custom Jailbreaker need?
The Jailbreaker runs on 9V DC, center negative, and draws 20mA, according to the maker's specifications. A standard center-negative pedal supply will run it.
Where is the Volta Custom Jailbreaker made?
The Jailbreaker is a boutique overdrive pedal handmade in Italy by Volta Custom, according to the maker's product page.
Sources (2)
- Jailbreaker by Volta Custom, RockBoard PedalPedia, 2026
- 11 Best Overdrive Pedals For 2026 (Includes Budget Options), Tone Island, 2026
