T’ang-ku-la Module: Soaring Performance

The T’ang-ku-la Module, named after a mountain that an eagle can’t fly over, symbolizes the soaring spirit of this amplifier. This module features a new three-stage feedback circuit that further reduces noise and high-frequency distortion, pushing the dynamic range to an unmatched 147dB. The innovative technology also reduces heat generation, enhancing reliability, extending component life, and lowering thermal noise.

Re-optimized Circuit Architecture

The A70 Pro boasts a newly developed ultra-low noise input stage that improves the balanced input noise performance and increases input impedance to 20kΩ, ensuring better compatibility with incoming devices. The redesigned gain architecture further diminishes noise and distortion at high gain states compared to its predecessors.

Ground Loop Noise: Disappearing Magic

Say goodbye to ground loop noise with the A70 Pro’s GND/LIFT switch. When noise is encountered, simply switch to LIFT mode, and the noise will vanish.

Aurora UI: A New Experience

The A70 Pro boasts a full-color screen and three touch buttons, allowing you to customize the playback information, FFT, and VU according to your preferences. Additional functions are available by pressing the volume knob.

Relay Volume Control

Experience precise volume control with the A70 Pro’s relays and resistor networks, forming an R2R volume control module. This ensures long service life and accuracy, even at low volume levels.

Highlights

• Unprecedented high power output: 17000mW x 2
• Vanishingly low distortion
• Relay volume control
• Two gain settings
• T’ang-ku-la Module for improved performance
• Re-optimized circuit architecture
• Ground loop noise elimination
• Expandable inputs with Ext90 input expansion
• Can function as a headphone amp or preamp
• 12V Trigger for seamless device synchronization

Specs

• Max THD+N: <0.00005%
• Max SNR: 147dB
• Max dynamic range: 147dB
• Frequency response: 20Hz – 40kHz
• Max output levels: 56Vpp (low gain), 54Vpp (high gain)
• Actual noise level (A-wt): <0.6uVrms (low gain), <1.8uVrms (high gain)
• Lowest crosstalk: -133dB
• Gain: 6dB (low gain), 19.8dB (high gain)
• Output levels
  • 17,000mW x2 @16Ω
  • 12,600mW x2 @32Ω
  • 6,000mW x2 @64Ω
  • 1,370mW x2 @300Ω
  • 670mW x2 @600Ω