想開始整Marantz7 (PA-1)pre-amp, 但有問題想問

一部pre-amp內,分別由幾多主要部份組成?

1. Chassics (Case)
2. Power supply, include Rectifier, fuse, switch, etc)
3. Input socket (I/O)
4. Wiring
5. input selector (if you need)
6. Volume control
7. Pre amp unit (PCB based or wire wrap)
8. Output socket
9. Protection circuit (Power on/off pop sound protection)
10. A good grounding method.
11. Misc items, (Foot, vol knob, Text, power cable, etc)