A-30電子管合併式功放機

Frequency response: 20Hz-20kHz±0.25dB

Rated output power: 200W+200W(8Ω)

Bluetooth version: Bluetooth 5.0

Input sensitivity: 400mV

Harmonic distortion: ≤0.1% (1kHz 1W)

Signal-to-noise ratio: 90dB

Input Impedance: 47kΩ

Dimensions (WxHxD): 430x243x460(mm)

Product weight: 29kg

Optical fiber, coaxial digital digital support: 16-24Bit, 44.1-192kHz, DOP64

USB support: PCM: 16-32Bit, 44.1-384kHz, DSD64, DSD128, DSD256, DSD512

USB support system: Apple, Window, digital player and other systems

• The biggest feature is that the output transformer of the traditional amplifier is canceled, and the power semiconductor transistor is used to replace the output transformer. The advantage is to eliminate various additional distortions caused by the traditional output transformer; such as frequency distortion, phase distortion, transient distortion, square wave Distortion, etc., so that the frequency response range of A30 can reach 10Hz-60KHz±1dB, and the output power can reach 200W/8Ωx2, which far exceeds the output power of the traditional 6550 (KT88) tube amplifier (within 100W). It is easy to drive the high-efficiency large-scale floor-standing speakers;

• The power output stage is composed of 8 high-power transistors, which can also be switched to 4 high-power transistor output stages to adjust the damping coefficient, so as to facilitate the matching of speakers with different sensitivities. In addition, it can be switched to class A or class A and B bias switch to facilitate the adjustment of tone;

• The pre-amplification part adopts ECC83 electronic tube for primary amplification, 6N11 electronic tube for second-stage voltage amplification, and 6550 (KT88) high-power electronic tube for Class A output drive circuit, so that this machine has the beautiful tone performance of traditional amplifier;

• Electron tube cross-connected capacitors are special capacitors for high-end audio in the aluminum foil oil-immersed series of the German Mcap brand. The filter capacitor used in the transistor power amplifier power supply is the Japanese ELNA brand FOR AUDIO series 10000uf/80v specification, which has excellent performance in both timbre and sound field; it plays an important role in improving the sound quality and timbre of the whole machine;

• Electron tube and field effect tube hybrid precision high-voltage regulated power supply, with extremely high voltage stability. The AC ripple coefficient is extremely low, and the timbre performance is more "bold";

• Adopt Japanese ALPS large-scale remote-control volume potentiometer, which has the characteristics of low noise, no sound coloration, and very small error between two channels;

• Equipped with an equal loudness switch function, which can improve the performance of high and low sounds at low volume;

• Bluetooth (5.0) digital audio connection with mobile phones, laptops, tablets and other devices. It can also connect digital or analog audio with iPod, iPhone, iPad, CD, DVD, TV HD set box. With optical fiber, coaxial, USB digital signal input interface, and with 24Bit/ 192K digital-to-analog conversion precision, support DSD512 format. There is also a group of analog signal balanced input terminals;

• Power output with large gold-plated binding posts for easy connection to any speaker cable;

• Aluminum alloy multifunctional infrared advanced remote control, which makes the operation feel better and more fashionable.