Quantity   Component name
1 × ESP32
1 × PT2399
1 × AS3320
1 × MCP4251 Data Converters / Digital Potentiometers
1 × 6n2p vacuum tube
1 × TL074 Amplifier and Linear ICs / Operational Amplifiers
1 × TL072 Amplifier and Linear ICs / Operational Amplifiers
1 × 7660S