Haeussel HB 4 MM + John East MMSR - Jazzus MM 4a 34"

Bassculture 38 HB + John East Uni-Pre 5 - Maruszczyk Hellfrog 5a

Bassculture Bigbucker + ACG / John East EQ-01 Preamp - Maruszczyk Frog Omega 5a

Haeussel JB 4 SC + John East J-Retro Deluxe // Maruszczyk Elwood 4a

Haeussel JB4 SC + John East Uni-Pre 4 // Maruszczyk Elwood 4a-24

Liam Tillyer chose a UNI-PRE for his Fender Jazz V.

Damien Neblett loves our Marcus Preamp!

John installs a J-style preamp

Your bass needs a preamp

Phil Mann with J-Tone Preamp

J-RETRO 01 Description & Sound Demo

P-RETRO 01 Description & Sound Demo

Randy Hope Taylor Wants a Dangerous Bass Sound

Watch Scott Ambush's amazing solo with Spyro Gyra using his U-Retro Deluxe preamp

Phil Mann chats about his playing styles and wide the range of tonalities he enjoys from his J-Retro Deluxe

The story of Prince's Purple Special Bass