Found at the heart of the many of the most iconic British studios during the ’70’s, the Helios Pre was used to great effect recording the music of The Beatles, Led Zeppelin, The Rolling Stones, Jimi Hendrix, David Bowie, Eric Clapton, Queen, The Who and many, many others. I’ve distilled the core facets of the Helios Pre and created….. ELIOS. Operating from an internally generated 24 volt supply, the same operating voltage as the original, (the ELIOS takes the standard 9 volt DC pedal power supply and boosts it), using the exact same transistors as the original, the ELIOS offers a glorious sounding, guitar specific preamp/ boost device. Adding an almost intangible “special sauce” to your guitars sound.