The Lineal is a neutral Volume-Booster based on the EH Linear Power Booster. It boosts signal about 25dB, without changing the sound too much. It needs very few parts, so it is perfect for beginners.

Installationguide: Install guide

Schematic and pcb: Lineal schematic and pcb

Wiring using a battery clip: Alternative Wiring

Partslist (BOM): Lineal parts