Topping A70Pro Fully Balanced Headphone Amplifier 17000mWx17000mW HPA, RCA/XLR/TRS/EXT to 4.4mm/6.35mm/4-Pin XLR Headphone Amp RCA XLR Output Preamp with 12 Trigger for Earphone//IEMs (Black)

T'ang-ku-la Module: The Tang-ku-la Module uses a new three-stage feedback circuit. Further reducing noise and high frequency distortion, making the dynamic range rise to an unmatched 147db new realm ^^
Re-optimized new circuit architecture: Newly developed ultra-low noise input stage further improved the noise performance of balanced input and increased the input impedance to 20kn thus having better compatibility with incoming devices ^^
Aurora Ul bring new experience: Full color screen and three touch buttons. Cusotmized functions are available by pressing the volume knob, The display of the playback information, FFT, VU can be switched according to your requirement ^^ 2 gain settings to suit different needs: It cover a wider range of needs to meet the needs of different headphones from low-sensitivity full-sized over-ears to high-sensitivity IEMS, even IEMS will not hear any background noise ^^ Ground Loop Noise Disappearing and
Relay volume control: A70Pro has added a GND/LIFT switch, when multiple devices are used in combination and generate ground loop noise, the switch will be switched to LIFT and the noise will disappear