After two years of research and development, a new generation of MP-701 MK3 bile preamplifier was officially launched. The new version of the circuit has been completely redesigned, in addition to comprehensively improving the sound quality, the signal-to-noise ratio has also been greatly improved. And the compatibility optimization is made for the downstream equipment with different input gain level requirements in the market. It can be used with combined power amplifier, pure power amplifier and active speakers. Different from the passive or digital pre-adjustable volume control integrated in the audio source equipment (such as DAC), the MP-701 MK3 is more than just a volume control, it is a truly independent amplifier preamplifier that can convert HiFi The sound quality of the system has been raised to a new level, bringing unheard sound details to the listeners, a higher dynamic range, a stronger low frequency, and a broader and deeper sound field.

Technology Highlights：

1. The on-board filament voltage switch can support 6.3V and 5V rectifier tubes, 6.3V and 12.6V signal tubes.

2. Onboard DIP output gain adjustment switch, the user can select 4 different levels of output gain to support the subsequent equipment with different input sensitivity.

3. Zero negative feedback circuit provides the most natural sound.

4. The large 150W toroidal transformer can provide sufficient redundant current. It is placed in the electromagnetic shielding compartment under the main board.

5. Fast installation capacitor design, the user can freely replace the output coupling capacitor and the power filter bypass capacitor to further improve or customize the tone of different characteristics, without the need for welding to easily replace.

6. The whole machine adopts original genuine HiFi-grade components, such as Vishay military-grade resistors, Rybycon and Nichicon low ESR power filter capacitors, Obbligato Gold coupling capacitors, Bennic XPP power bypass capacitors, ALPS volume control and power switches, and genuine gold-plated terminals.

7. All aluminum alloy chassis, solid aluminum alloy shock-absorbing cone feet and button knobs.

8. With remote control volume control function.

Technical index

1. Output voltage: 20V (maximum), depending on the DIP gain switch setting and the type of signal tube used.
2. Output impedance: >= 10Kohm
3. Frequency response: DC to 50khz
4. Input: RCA x 3, XLR x 1
5. Output: RCA x 2, XLR x 1
6. Active subwoofer support: Yes
7. Dimensions: width 31cm x depth 39cm x height 14.5cm
8. Gross weight: 12 kg
9. Input voltage: 110-120V / 220-240V can be selected

 
Electron tube：

1. 6.3V filament rectifier tube: 6Z5P, 6X5.
2. 5V filament rectifier: 5R4, 5U4G, 5AR4, GZ33, GZ34, 274B, 5Y3, 5Z3P.
3. 6.3V signal tube: 6N11, 6N1P, E88CC, E188CC, CCA, 6922, 6H23, 6H6, 6H30, (6SN7 needs to use 6SN7 to 6922 conversion seat).
4. 12.6V signal tube: 12AU7, 12BH7, E80CC, (12SN7 needs to use 6SN7 to 6922 conversion seat).

When using a 6.3V filament rectifier, the on-board S2 switch must be set to the 6X5 position. When using a 5V filament rectifier, the onboard S2 switch must be set to the 5AR4 position.

When using a 6.3V filament signal tube, the onboard S1 switch must be set to the 6.3V position. When using 12.6V filament signal tube, the onboard S1 switch must be set to 12.6V position.

Replaceable capacitor：

1. The standard Obbligato Gold coupling capacitor is 630V 2.2UF. The capacity can be 1.5UF-4.7UF. The voltage must be >= 350V, infinite.
2. The standard Bennic power supply filter bypass capacitor is 350V 6.8UF. The capacitance can be 0.1UF-10UF. The voltage must be >= 350V, infinite.

Warranty：One year (except electron tubes).

Tips:This product is an upgraded MP-701 MK3