Description

Germany MBL6010 version NE5534 single op amp DC pre-amplifier with adjustable midpoint.

The famous German MBL 6010 version single op amp DC preamplifier can work when connected to 220V power supply.

The line comes from the German MBL 6010 line, including input amplification, volume adjustment, and buffered signal output. The midpoint 0 potential of the 4 op amp outputs is adjustable, and there is no coupling capacitor in the whole process, which eliminates the impact of cross-connected capacitors on sound quality and can effectively improve sound quality. This is also the essence of the MBL 6010 circuit.

The single op amp itself has an adjustable output zero potential, but the adjustment range is limited, generally between tens of millivolts and hundreds of millivolts. However, this MBL 6010 circuit has a large adjustment range, which can be adjusted from zero millivolts to ten milliseconds, and the accuracy is greatly improved. If the op amp is carefully selected, it can even output 0 mV.

High-quality component assembly, 4 NE5534 single op amps, high-precision Japanese KOA five-ring resistors, 4 3296 precision adjustable potentiometers, and Nissan blue case 27 potentiometers.

Affirm: The second-hand disassembly of the op amp on the board, the components used will be different due to different assembly batches, so please be careful.