Musical Paradise Upgraded MP-701 MK4 HiFi Electronic Tube Amplifier Preamplifier with 2-Inch IPS Screen

Introduction:
- After two years of continuous research and development, the MP-701 MK4 has achieved a comprehensive upgrade from power supply, volume control, circuit design to user experience, based on the highly acclaimed MP-701 MK3.
- It not only retains the unique natural charm of electronic tubes, but also further enhances the resolution, dynamics, sound field, and background purity, making music more authentic, enduring, and infectious.
- The natural and warm feeling of electronic tubes, rich and delicate musical layers, wide and profound three-dimensional sound field, and energetic dynamic expression make every listening experience closer to the scene.

Upgrades:
- 2-inch IPS high-definition color display screen: With a brand new graphical user interface, input and volume are clear at a glance, making operation more intuitive.
- 100 level relay resistor array volume control: adopts precision matching resistors for KOA and VISHAY and high-speed clarinet relay switching. Compared with traditional potentiometers, it has higher left and right channel consistency, lower distortion, better sound detail resolution, and more stable and durable.
- Full function infrared remote control: volume, input switching, mute and other functions can be completed with just one click, making it more convenient to use.
- Z11 iron core HiFi power transformer: designed with low leakage and large margin, providing a stable and pure power supply foundation for electronic tubes.
- High specification HiFi level components: using HiFi level capacitors for VISHAY BC, Rubycon, ICEL, RIFA, and for VISHAY DALE, KOA HiFi level resistors, effectively reducing ripple noise, improving background quietness and sound purity.
- Optimizing rectifier circuit: A more reasonable high-voltage power supply design can help extend the service life of electronic tubes and improve long-term stability.
- Thickened all aluminum alloy chassis: The high rigidity structure effectively reduces mechanical vibration and provides a more stable working environment for sound.

Eight HiFi Grade Core Technologies:
- Dual voltage electronic tube compatible design, allowing for free replacement of different tubes to experience different tones.
- Four level gain adjustment, easily matching various sensitivity post amplifiers and active speakers.
- Fully electronic tube zero negative feedback amplification circuit, restoring natural and smooth music texture.
- High power redundant power supply design, capable of handling large dynamic music transients with ease.
- Soldering-free capacitor replacement design, easy to experience DIY music tuning fun.
- Selected imported HiFi components from the entire series, balancing reliability and sound quality performance.
- CNC precision metal knob, delicate damping, smooth operation.
- New screen display and remote control system bring a more comfortable daily use experience.

Specifications:
- Input interface: RCA x 2, XLR x 1
- Output interface: RCA x2, XLR x 1
- Frequency response: DC - 50kHz
- Input impedance: 30Kohm
- Output impedance: 2Kohm
- Product size: 410 x 310 x 100mm
- Net weight: about 10kg
- Working voltage: 110-120/220-240V (global dual voltage switch)

Rich Electronic Tube Compatibility:
- According to personal listening preferences, freely mix and match different electronic tubes to experience different tone styles.
- Rectifiers tubes (6.3V, S2 switched to 6X5): 6Z5P (standard), 6X5
- Rectifiers tubes (5V, S2 switched to 5AR4): 5R4, 5U4G, 274B, GZ34, 5AR4
- Signal tube (S1 switched to 6.3V): 6N11, 6H1N, 6922, E88CC, ECC88, ECC85
- Signal tube (S1 switches to 12.6V): 12AU7
- S1 switch: Switch the working voltage of the signal tube
- S2 switch: Switch the working voltage of the rectifier tube

Soldering-free DIY Tuning Design:
- No welding required, capacitors can be easily replaced to experience different sound styles.

Output Coupling Capacitor:
- Original configuration: for RIFA 2.2μF/1000V
- Suggested replacement range: 1μF ~ 6.8μF (withstand voltage ≥ 350V). The larger the capacity, the richer and fuller the sound; A smaller capacity makes it more transparent and agile.

Filter Bypass Capacitor:
- Original configuration: for ICEL 2.2μF/400V
- Replacement range: 0.1μF to 10μF (withstand voltage ≥ 350V). Different brands and capacities can provide distinctive sound performances, fully meeting the DIY tuning needs of audiophiles.

Widely Adaptable to Various Audio Systems:
- HiFi 2-channel system
- High-end active speaker
- Transistor rear stage power amplifier
- Electronic tube rear stage power amplifier

Package Included:
- 1 x Electronic Tube Preamplifier