Triodino 4 – Advanced 300B Single-Ended Amplifier, No Compromises

Reforming of electrolytic capacitors with automatic regenerator

How to build an “advanced” Variac for the laboratory

Dynaco A-410: Beginner’s Guide to a Push-Pull Amplifier

Audio Innovations 700 and 800, restoration and repair

Repair of the 1967 Autovox Concorde Series 2000

Final overhaul of the Klimo Kent Silver tube amplifier

Damping factor in audio amplifiers, what it really is and why it matters

Stabilized Anode Power Supply 0–350V 5–50mA

How to safely discharge a capacitor

Reactive Load for Audio Amplifiers

Active reverse RIAA with galvanic isolation – “pickup simulator”

From Garbage to Hi-Fi – 6GE5 Single-Ended Amplifier

High-end audio: is it always synonymous with quality?

Riparazione e upgrade AudioNote Conquest, analisi del driver, misure reali e ottimizzazione del circuito

Repair and restoration of a CTB AB-80 Analyzer

Restoration of a Piaggio CTB magnetic sweeper (1965)

Repair of the Porsche 930 Ignition Control Unit and Troubleshooting the Tachometer

Audion Sterling Stereo MK1 EL34: Repair, Measurements, and Technical Analysis of the Circuit

Audio Innovations L2 valve preamp, complete overhaul and audio performance optimization

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We’re currently translating our entire website into English. Many articles are still available only in Italian, and the links inside English articles may still point to Italian pages. Once every article has been translated, all links will be updated.

Thank you for your patience and for visiting while we complete this work!