This preamplifier circuit refers to German MBL6010D, with high sound separation and more balanced three frequencies. The bass is full. Can be used with most amplifiers.
Different sound sources may have different expressions of music. High magnifications may have a slight noise floor. The noise floor is an inherent characteristic of the device. Compared to the high cost performance of this preamp, the slight noise floor can be forgotten. The performance has been recognized by many Chinese audiophiles. If you are an ordinary audiophile, I suggest you buy it. If you are pursuing perfection of the pre-amplifier, you need extremely low noise floor. I recommend buying other more advanced preamps.
There are 2 versions to choose from. The difference is that the 4 op amp and transformer used are different.
version 1 : 4 piece 5534DD op amp R core transformer
version 2: 4 piece AD797 op amp Toroidal transformer
It is recommended to buy the AD797 op amp version for better sound quality. If you are interested, you can try different op amps, such as LME49710.
In addition, I want to tell you: there may be some electronic components that are different in the pre-amplifiers of different production batches. This will not affect the sound quality, the main reason is that the current electronics component supply is not very stable. If the electronic component is out of stock, we will use another brand of the same level instead. Pictures may not be replaced in a timely manner. For example, we will use KG or ELNA as the main filter capacitor. If you mind please don&x27;t buy it. Leave the goods to other audiophiles.
Introduction
Circuit: Refer to MBL6010D main amplifier circuit, remove the balance part.
shell : All aluminum alloy, including all aluminum knobs.
Control: Left knob Turn power switch, right knob Volume control ALSP 27 potentiometer
Transformer: Type R input voltage can choose 115V or 230V, international standard, can be used for 110V 220V such as the voltage of Japan, South Korea, Russia.(If a friend wants to upgrade the transformer, please contact me. The transformer can be upgraded to a TALEMA toroidal transformer. The price will be higher.)
Audio input, output: single-ended RCA
Size: 288 * 171 * 52mm
Packing list: 1 piece of pre-amplifier (excluding main power line and signal line).
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