https://lucaji.github.io/tags/metalworking/Metalworking - Tag - MilletgrainHugo -- gohugo.ioen© 2013–2026 Luca Cipressi. Content licensed under CC BY-NC 4.0 unless otherwise stated.Mon, 19 Jan 2015 00:00:00 +0000https://lucaji.github.io/diy-tube-amp-builds/Mon, 19 Jan 2015 00:00:00 +0000Luca Cipressihttps://lucaji.github.io/diy-tube-amp-builds/Two archetypal guitar-amp circuits — the Marshall JCM800 2204 and the Fender Champ 5F1 — became the foundation for a series of handmade tube-amp builds, from high-gain heads to compact table-top and denim-covered Champ variants.