I offer a professional and specialized service in the repair and maintenance of tube equipment: amplifiers, preamplifiers, studio gear, and vintage car radios. With over ten years of experience in the field, I combine technical precision with a passion for sound, ensuring reliable and long-lasting results.
What I Repair
I work on a wide range of tube-based equipment, both modern and vintage:
- HiFi amplifiers and preamplifiers, vintage and modern, any brand.
- Amplifiers and preamplifiers for musical instruments (guitar and bass).
- Studio recording equipment, including microphone preamps.
- Tube car radios.
>>> Warning: I do not repair vintage tabletop radios or wooden console radios for domestic use. <<<
Most Requested Services
Many faults in tube equipment show similar symptoms: loss of sound quality, hiss, background noise, power drop. Often the causes are related to components that degrade over time. The most common services include:
- Replacement of filter capacitors, bias, and electrolytics in general.
- Tube replacement and bias adjustment.
- Repair or replacement of defective components.
- Overhaul and restoration of vintage amplifiers, also with targeted upgrades.
- Rewinding of transformers for power supply, chokes, and audio transformers.
Why Choose a Qualified Technician
Turning on a faulty amplifier “hoping it will work again” is a mistake that can turn a simple issue into a serious failure. In some cases, transformers can burn out, causing much more expensive damage. The best choice is not to insist and immediately contact a qualified workshop: only a thorough inspection allows you to identify the real cause of the fault and restore the unit safely.
Examples of Work Performed
Over the years I have brought back to life all kinds of equipment, such as the McIntosh MX110 – Complete restoration of a vintage HiFi preamplifier/tuner, returned to original condition with a full overhaul of the tube section and power supply, plus rewinding of the power transformer:
Luxman MQ3600 (1980s) – Advanced restoration of one of Luxman’s most iconic tube amplifiers (1977–1982), known for the rare NEC8045G output tubes (similar to KT88 in triode mode). Work carried out: general overhaul, replacement of worn components, and fine bias adjustment. The result: an amp restored to optimal performance, with greater power and fidelity, all done while respecting the original design as much as possible.
EAR864 – Repair of a high-end preamplifier with faulty output transformer – The legendary preamplifier designed by Tim de Paravicini was fully restored after a failure in the output transformer. Following precise diagnostics, I successfully built a clone transformer perfectly in line with the original, thanks to careful reverse engineering. I replaced capacitors with more suitable values and selected audiophile-grade components, restoring linearity and sonic clarity. After bench testing, the preamplifier achieved a total harmonic distortion (THD) of 0.18% and a frequency response from 10Hz to 25kHz with minimal attenuation, ensuring excellent performance and stable reliability.
Mesa Boogie DC10 – Restore after forum modifications – A Mesa Boogie DC10 came to the lab after someone applied tweaks found online hoping to “open up” its sound. The changes (removal of ceramic capacitors and replacement of resistors) resulted in abnormal behavior: the amp became unstable, generated RF interference, and electromagnetic noise that even crashed a nearby DVD player… a truly unexpected “creative fault”! With accurate diagnostics, I identified the cause of the instability and restored the original circuit, including critical RF components that seemed “useless” but were actually essential to contain harmful oscillations. After the work, the amp was stable again, quiet, responsive in controls, and perfectly reliable.
Warm Audio EQPWA – Overhaul and optimization of a studio tube equalizer – I received two Warm Audio EQPWA units, faithful tributes to the historic Pultec EQP1A but at an affordable price, featuring fully analog circuitry with tubes and CineMag transformers. The work included a complete overhaul: thorough technical inspection, verification of frequency response, noise, and power stability. In particular, I replaced and matched the ECC82 and ECC83 tubes, ensuring uniform tonal response across both units—essential when used in stereo on bus or mastering.
Contact Me
If you have tube equipment that needs repair or restoration, feel free to contact me: you’ll receive a precise and professional evaluation. Click here to request information.