ShengYa A-33 Tube transistor Hybrid Integrated Amplifier with Bluetooth 200W*2

1. Circuit upgrade · 9 tubes work together to present a mellow and full sound. It is upgraded on the basis of the A25CS circuit, and 4 6P1 power amplifier tubes are added to enhance the driving effect!
2. [First-stage input amplification]: / 12AX7 tubes are used for their delicate sweetness and high analytical power: creating a classic "tube-flavored" sound.
[Second-stage voltage amplification]: 2 12AU7 tubes are used for high-amplification voltage amplification to achieve large dynamic signal output without compression.
[Innovative power amplifier drive stage]: 4 6P1 power amplifier tubes SEPP current amplification significantly enhance the driving effect, and drive the rear-stage power amplifier with full power.
[High-voltage rectification and voltage stabilization]: 6Z4 tube rectification and 12AU7 tube servo voltage stabilization are used to lay the foundation for the mellow tube flavor.
3. One machine contains multiple interfaces to adapt to multiple audio sources
Equipped with optical fiber, coaxial, ARC digital signal input interfaces, analog signal RCA and XLR input ports, each set, suitable for TV, CD, vinyl player, game console and other devices; Bluetooth wireless transmission, connect to mobile phones, tablets, notebooks in seconds, wireless playback is more free.
4. Professional digital-to-analog conversion
Optical fiber, coaxial, ARC digital signal input interfaces support 24Bit/192kHz digital-to-analog conversion accuracy to ensure high-quality transmission of audio signals
5. Bluetooth 5.0 stable and fast connection
Support audio encoding: SBC/AAC, aptx, aptx-LL, aptx-HD.
6. More than 30 years of ingenuity and research on gallstone mixing technology
Vacuum tube preamplification: audiophile-grade tube common cathode amplifier circuit 6P1 tube as SEPP buffer amplifier; transistor power amplifier: 8 Toshiba high-power transistors form a 0dB current amplifier circuit.
7. 200W output power per channel
8. Japan ALPS precision
The volume potentiometer has low noise, no sound coloration, and extremely small error between the two channels
9. Hybrid precision high voltage, DC regulated power supply
The hybrid power supply of electron tubes and transistors has high voltage stability, low AC ripple coefficient, and more "tube-like" sound
10.
GA (gain control function)
1. Enhance the driving effect to match low-sensitivity speakers;
2. Fine-tune the softness or tightness of the sound
LOUD (equal loudness function)
After activation, the high and low bass performance can be enhanced at low volume, allowing users to experience the delicate and surging feeling at low volume.
TONE (tone adjustment function)
Direct/tone dual mode: one-touch switch between "original" or "personalized tuning" After turning on the TONE switch, BASS adjusts the bass; TREBLE adjusts the treble
11. Multifunctional aluminum alloy
Infrared remote control system
The remote control system can remotely control the volume and input selection function within 7 meters

Specifications:
Rated output power: 200W+200W (8Ω)
Frequency response: 20Hz-20kHz±0.5dB
Bluetooth version: Bluetooth 5.0 (supports audio encoding: SBC/AAC, aptx, aptx-LL, aptx-HD)
Input sensitivity: 400mV
Harmonic distortion: ≤0.1% (1kHz 1W)
Signal-to-noise ratio: ≥90dB
Input impedance: 47kΩ
Dimensions (width×height×depth): 432x191x410 (mm)
Weight: 25kg
Optical fiber, coaxial digital digital support: 16-24Bit/44.1-192kHz
Digital support: ARC digital HDMI
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