1. Good sound quality
Portable amps on the market generally use 5V or 9V power supply, the voltage is not enough, and the sound quality is much worse.
I choose dual 15V voltage, the higher the voltage, the lower the distortion rate. Use DING-level 627BP single op amp to match the Class A broadband mode of BUF634
2. Long battery life
This kind of battery in the picture is not common in our lives. The power of the 18650 is more than 10 times that of the No. 5 battery
A long time ago I wished to use 18650 lithium batteries to make an amp, and now I finally have it.
3. Wide application
There is a gain adjustment switch inside. Simply put, the amplification factor can be adjusted, high-impedance headphones can be adjusted up, and low-impedance headphones can be adjusted down.
4. No impact, no bottom noise
There are many amps on the market, but none of these two points can be achieved. I think this is the quality that an amp should have. The unique power-on delay function can better protect the headset, and the mood is also great!
5. Easy to use, no need to disassemble
Compared with other amps, it needs to be disassembled to charge or replace the battery
The frequency response range of MG2: 2Hz-72KHz (-3dB), very beautiful response curve
The test chart equipped with 627 operational amplifier is as follows: Distortion rate <=0.00557%
Material selection
The bypass capacitor of the op amp uses Japan''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s Nikon plus WIMA, which creates a great reserve force for the play of the op amp!
In order to have less transmission loss and more idealization, WIMA capacitors are selected;
Default shipping configuration
The main unit and a charger need to be purchased separately for the recording line! Unsatisfactory return at any time within 7 days, lifetime warranty, so you have no worries! , The discount of 100 yuan for buying MG1. Each MG2 undergoes a cycle aging before it is issued! If you have any questions, please contact customer service. Thank you.
Operating mode
For the sound quality, we turned on the Class A broadband mode of BUF634, which has a certain amount of heat under plus or minus 15V, and the temperature of BUF634 can reach 68 degrees at 30 degrees; the shell will be warm in actual use!
Battery selection and protection
For this reason, the Japanese Panasonic 18650 high-capacity lithium battery is selected. Each cell has a capacity of 3400mAH and is supplied in series; it has an independent protection circuit and a current sharing function, so that you can use it with peace of mind and use it at ease! In order to make the contact better, the shrapnel of the battery box has been removed, and the single crystal copper silver-plated wire is directly used for welding!
Precautions for use
Don’t plug in the charger to start when the MG2 is completely out of power, because the start-up current of MG2 is above 1.5A, and the maximum output current of the charger is only 1A, so you can’t pass the charger when there is no power at all. Oh, it''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s activated. The correct approach is: you should charge for 5 minutes before starting(Battery assisted start)
In cold and dry seasons, do not disassemble or replace the op amp at will, because static electricity will easily penetrate the MG2 chip and cause direct damage. If you want to get it, it is recommended to wear an electrostatic bracelet and connect it safely. Earth.
In order to fully activate capacitors and resistors and other devices, it is recommended to charge the machine for 8 times.
MG2 can be returned if you are not satisfied within 7 days. If you are not sure, please be careful not to scratch it. If you want to return the product, you must return it with free shipping.
Friends who need to replace the discrete card or adjust the gain can use the M2 hex screwdriver to loosen the top 4 shell screws of the MG2. At the same time, in order to take out the top shell easier, you need to loosen the other 2 shell screws at the bottom of the rear panel. A little bit, you can only operate after removing the top box. If you don’t know how to replace and operate, please contact customer service.
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