Imitation MBL6010D front stage power integration kit DIY power supply board rectifier filter power board
This is a pre-amp enough to attract the attention of all enthusiasts, because it is derived from the world&x27;s three famous pre-amps - the German MBL6010D that sells for 100,000 yuan.
The line of the front stage is consistent with the main amplifier part of the original machine, and the materials used are as close as possible to the original machine. The AD797, a famous fever op amp, is used, and a fully direct-coupled circuit is used to fully exert the excellent characteristics of the AD797.
1 AD797 is an excellent operational amplifier, the circuit is optimized for AD797
2 Playing with the circuit is playing with the power supply. The MBL circuit attaches great importance to the details of the power supply. Each op amp decouple is composed of 8 capacitors of different sizes, which are 220UF 104 (or 224) 103 102. Weak audio is brought into full play
3 The whole machine is fully DC, without any isolation capacitor. Thanks to the precise matching of 6 adjustable resistors
Each separate circuit has a separate ground, unlike other MBL versions. Lay the floors together randomly, this will affect the degree of separation
Use points:
The power supply is adjusted to +_17V or +_15V, respectively, the 4th pin of the op amp = -17V and the 7th pin = +17V
After adjusting the power supply, you can plug in a single op amp independently, and leave the rest unplugged. Adjust the corresponding adjustable so that the output (the 6th pin of the op amp) is the closest to 0MV
The op amp is recommended to use AD797, or NE5534 LME49710 can be selected
PCB size is 147X95MM
![](https://ae01.alicdn.com/kf/Sa322f447aa7a4ac2b5e3c91c71cd8298U.jpg)
![](https://ae01.alicdn.com/kf/S9119ea389cfd430ba6fd08b4bff76136k.jpg)
![](https://ae01.alicdn.com/kf/S2b44f4e8d95e49129c2b80016d3fac98K.jpg)
![](https://ae01.alicdn.com/kf/S1486b24b9434443482fb2e236c1bd5f6T.jpg)
![](https://ae01.alicdn.com/kf/S5c0616c630364d63b3afb4dac373ab9aY.jpg)
![](https://ae01.alicdn.com/kf/Sa9a6782f29cb4c438880f9a5fd22bd1bI.jpg)