● Fully symmetrical X-Amp ultra-high-speed power amplifier circuit
● Full DC coupling circuit
● Balanced or single-ended input available
● High damping characteristics, capable of driving all low-sensitivity, large-size loudspeakers
● Precise sound quality: High resolution, first-class control, and superior low-frequency performance
Design Materials
● Extra-large and extra-thick chassis, 430mm wide, 430mm deep, and 230mm high (including feet)
● One 600W Japanese steel transformer for each left and right channel
● Eight 10000uF audio electrolytic capacitors per channel
● Completely independent design for left and right channels; amplifier board, power board, and protection board are all completely separated from the left and right channels
● Seven pairs of precision-matched Japanese-made Sanken vacuum tubes per channel
● Extra-large quiescent current, 300mA per tube
● Comprehensive speaker protection, effectively protecting your expensive speakers
● Soft-start and DC power filtering functions
● Shute power socket and gold-plated fuses
● High-quality terminal blocks
● Acoustic RCA signal interface
● Single-crystal copper signal cable used throughout
● Uses American ALPHA solder wire
Specifications
Input Sensitivity: 1.12Vrms
Input Impedance: 33KΩ
Damping Factor: 2000
Output Power: 100W/8Ω, 200W/4Ω (RMS power, stable full-power output over long periods)
Static Power Consumption: 220W
Power Supply: AC110V or AC220V
Color: All silver or all black
Weight: 32KG
Dimensions: 430*430*230mm
AP Test Parameters (8Ω 800W Load Test Data Per Channel)
Output RMS: 30.0Vrms;
Channel Gain: 28.5dB (26.8x);
Residual Noise: 25.28μV;
Signal-to-Noise Ratio: 121.4dB;
Dynamic Range: 121.4dB;
Total Harmonic Distortion: 0.000398%;
Total Harmonic Distortion Plus Noise Distortion: 0.0015%;
Frequency Response Bandwidth: ±0.064dB
Differences between the two versions (everything else is the same):
A9.4 Standard Version: Uses 16 ELNA audio electrolytic capacitors.
A9.4 Upgraded BC Capacitor Version: Uses 16 Vishay BC 056 series audiophile-grade audio filter electrolytic capacitors.
