About BJ Amplifiers

BJ Amplifiers is a family-owned guitar amplifier repair business founded in 1989 by John and joined by his son Joe 9 years later. 

With a combined 63 years experience in the business repairing and building amplifiers, and with a passion for music, they specialize in restoring and servicing a wide range of guitar and Bass guitar amplifiers—from vintage tube models to modern solid-state amps. Known for their precision and commitment to quality, BJ Amplifiers combines craftsmanship with personalized service, making sure every amplifier they repair performs like new. Whether it’s a minor tweak or a full overhaul, John and Joe treat each job with the same level of care and expertise, ensuring musicians get back to making great music with their trusted gear.

BJ Amplifiers is renowned for its top-tier amplifier servicing and repair work, catering to both professional musicians and hobbyists with unmatched skill and precision. Whether you're dealing with a vintage Fender or a high-end Mesa Boogie, BJ Amplifiers has the expertise to handle it all. John and Joe are well-versed in working with a vast array of brands, and they specialize in warranty repair for many of the leading manufacturers in the industry, including Fender, Mesa Boogie, Marshall, Vox, Mark Bass, Ampeg, Gallien Krueger, Peavey, Orange and Many More.

Their services range from basic tune-ups and minor repairs to extensive rebuilds, making sure that each amplifier performs to its full potential. Whether it’s a faulty tube, damaged circuit board, cabinet repair or speaker issue, BJ Amplifiers takes a meticulous approach to ensure your amp sounds as good as new.

They understand the needs of both professional musicians on the road and passionate hobbyists, offering tailored solutions for every type of player. Professionals trust BJ Amplifiers for fast, reliable repairs that keep them on stage without missing a beat. Hobbyists appreciate the personalized service and care that goes into restoring their cherished gear. With warranty work for most major brands, BJ Amplifiers not only restores your equipment but also ensures it’s covered for future peace of mind.

In every repair, John and Joe bring a combination of experience, passion, and attention to detail, making BJ Amplifiers the go-to choice for anyone looking to get the best performance out of their amplifier.

 Designed and built in Redbank, Queensland, Ratajczyk Guitar Amplifiers are a testament to Australian craftsmanship, delivering premium sound through meticulous attention to detail. Built with hand-wound transformers, hand-soldered circuitry, and all-tube designs, each amp offers unparalleled warmth, clarity, and tonal richness. With decades of industry knowledge, Ratajczyk amplifiers are engineered to provide musicians with a sonic edge, combining vintage charm with reliability. Designed and built for those who demand the best, Ratajczyk amps stand as a pinnacle of durability, precision, and unmistakable sound quality.