MUZISHARE X7 KT88 x4 Amplificador integrado de tubo de vacío y amplificador de potencia para auriculares

MUZISHARE X7 KT88 x4 Vacuum tube integrated Amplifier & Power Amplifier Headphone 100% original factory and brand new

X7 Collection Edition (New with Balanced Version)

It has a pure power amplifier ans it can conncet with an independent pre-amp's signal input. 

It has a phono stage input function, which can be connect directly with a MM Vinyl turntables

It has XLR balanced input

Technical parameters:

Rated output power: 25W+25W (RMS transistor working state)

45W+45W (RMS superlinear operating state)

Harmonic distortion: 1% (1kHz)

Overall frequency response: 15Hz~30kHz (-1.5dB)

Input sensitivity: 280mV; 520mV (pre in)

Input impedance: 100K Ω

Output impedance: 4 Ω 8 Ω

Signal to noise ratio: 92dB

Left and right output balance:<0.5db

Weight: 25kg

Power consumption of the entire machine: 260W

Using vacuum tubes: 12AX7 * 1, 12AU7 * 2, KT88 * 4, 5AR4 * 1

Overall volume (W * D * H): 410mm * 335mm * 198mm

Power supply voltage:~110V/220V ± 5% (50Hz)

Working conditions: Temperature: 0 ℃~40 ℃ Humidity: 20%~80%

Storage conditions: Temperature: -20 ℃~70 ℃ Humidity: 20%~90%

Features of this machine:

1: Pure handmade, the entire machine is welded under a canopy

2: Adopting two high-quality broadband and high sound quality Japanese EI output transformers

3: Using a high-power Z11 iron core ring power transformer specifically designed for this machine

4: The voltage amplification and propulsion stages use 5AR4 as the rectifier power supply

5: Use 12AX7 and 12AU7 vacuum tubes for voltage amplification and phase inversion propulsion, and use KT88 vacuum tubes for AB1 type push-pull power amplification; Provide transistor and superlinear selection functions: The transistor works in a soft, pure, and smooth manner, suitable for appreciating vocal, string, and other types of music; Super linear working mode, with a loud and unrestrained sound and good momentum, suitable for enjoying music of large scenes, dynamic events, and other types.

6: External power transistor current adjustment knob and current display meter head

7: With pure post stage function, it can be connected to independent pre stage signal input

8: Equipped with playback function and can be connected to a black tape player

9: Equipped with truly balanced input ports for richer musicality and details

10: Infrared function remote control

11: Power on mute delay function (approximately 30 seconds)

12: Select Japanese ALPS motor potentiometer

13: Convenient installation of plug-in vacuum tube protective cover