AIYIMA A20 2.1 Channel Power Amplifier,300Wx2 HiFi Fully Balanced Stereo Amp with Adjustable HPF&Sub Out,PFFB+TPA3255 Class D Amp,XLR/RCA Inputs,12V Trigger&Bypass Functions

【Reference-Grade Performance​】Achieves an exceptional 116dB signal-to-noise ratio (SNR) and an ultra-low 0.002% THD+N, ensuring a perfectly black background and pristine, uncolored sound reproduction. Hear every detail of your music with absolute clarity 【Professional 2.1 System Hub】Features an adjustable High-Pass Filter (HPF: 60-200Hz)—a game-changer for system integration. It protects your main speakers from bass distortion, dramatically improves mid-range clarity, and works seamlessly with the Subwoofer Output to create a powerful and articulate 2.1 system 【Audiophile-Grade Features & Flexibility】Designed for enthusiasts. Includes BYPASS mode for use with an external preamp, +3dB gain switch for source matching, XLR/RCA input toggle, and LME49720 op-amps,can swappable op-amps design, The 12V trigger ensures seamless integration into automated systems 【Premium Build & Components】Built on a 4-layer gold-sunk PCB for superior signal integrity. Loaded with high-end components including German WIMA capacitors and Japanese Rubycon capacitors, guaranteeing both stellar sound quality and long-term reliability 【Perfect Pairing with T20】Part of the AIYIMA high-performance ecosystem. effortlessly connects with the AIYIMA T20 Tube Preamp via the 12V trigger for a one-touch, fully balanced, high-fidelity system that combines tube warmth with solid-state power 【Excellent cooling system】The internal air convection design ensures long-lasting and stable high-power operation AIYIMA A20 is an excellent high-fidelity home audio amplifier product that is carefully designed in terms of performance, function and design

Power amplifier chip: TPA3255

OP amp chip: LME49720*2 (plug-in), NE5532*7 (patch)

Replaceable OP amp chips: LM4562, NE5532, OPA2604, OPA2134, JRC5532, Muse02, etc.

Other key components: WIMA capacitor/Ruby capacitor/Japan NJW1195 volume IC

Input interface: RCA, XLR

Output interface: SPEAK OUT, SUB OUT

Other interfaces: 12V trigger input

SINAD: 95dB (SINAD)

Signal-to-noise ratio (SNR): ≥116dB

Dynamic range (Dynamic Range): 110dB

Distortion (THD+N): 0.002%

Speaker impedance: 4-8Ω

Frequency response (Frequency response): 20Hz-20kHz (±0.4dB)

Output power: 300W*2 (4Ω)

Other functions: BYPASS volume pass-through/RCA gain (3dB)/HPF high-pass filtering (60-200HZ)

Supported devices: mobile phones, tablets, computers, decoders, preamps, streaming media, CD players, etc.

Output mode: 1.Passive speaker 2.Passive speaker + active subwoofer

Working power supply: DC 24-48V

Product size: 190*142*46mm

Packing size: 296*228*77mm

Product net weight: 1115g