T-EP3 How to Bias EL34 Tubes on Guitar Amp | Step-by-Step скачать в хорошем качестве

T-EP3 How to Bias EL34 Tubes on Guitar Amp | Step-by-Step

In this video, I walk you through the complete process of biasing the Custom Audio Amplifiers OD100 Classic Plus — my trusted all-round amp since 2017. I’ve replaced the output tubes with a matched quad of Electro-Harmonix EL34s and demonstrate how to safely set the bias using a multimeter and the built-in test points on the amp. This guide is meant for players and tech enthusiasts who want to understand how to dial in a proper idle current (around 35–38mA) for a warm, dynamic response — without risking tube or transformer stress. ⚡ Safety Note: Tube amplifiers contain lethal voltages even when unplugged. Attempt this only if you know what you’re doing. 🎸 Gear Used: • Custom Audio Amplifiers OD100 Classic Plus • Electro-Harmonix EL34 tubes (matched quad) • Fluke 87V Digital Multimeter • Furman PL-Pro Power Conditioner 💬 Credits: Thanks to John Suhr & Bob Bradshaw for creating this masterpiece.