The Keeley Java Boost is a single channel, three mode signal amplifier for running your amplifiers into natural overdrive.

Its boost circuitry uses a rare original 1960s Mullard OC44 Germanium transistor for genuine Vintage tone!

The toggle switch allows you to select from a classic Dallas Rangemaster tone, mid boost, or full range boost. The other controls are Level, Tone, and a True Bypass footswitch.

Robert Keeley uses only tone-tested audiophile-grade components in the Java, including metal film resistors and capacitors throughout and silver solder construction. This all results in an ultra low-noise studio grade booster that will get the best from your amp.

Battery powered, an Ibanez/Boss DC power input jack is also fitted.

The finish is powder coat translucent deep blue.

The blue LED immediately tells you it's a Keeley!

• £169 with FREE UK delivery