Roland D-50 Repair
The long journey of restoring a Roland D-50
pcb
80dB Noise Preamp
A very high gain (80db or x10000) differential AC signal amplifier
Alesis M1 Active MK2 Repair 维修记录
Repairing a pair of classic Alesis monitor speakers 维修一对经典的Alesis监听音箱
Roland XP-80 Repair 罗兰XP-80合成器维修
A Roland XP-80 synthesizer repair writeup
Battery Powered Phantom Power Supply 电池供电的幻象电源供应器设计
A 3x AA battery powered phantom power supply design