AIYIMA A20 Mono Hi-End Balanced Class D Power Amplifier TPA3255 300W & XLR

Product description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. A20 MONO Amplifier

Product Model A20 MONO Chipset TPA3255+OPA1612+LME49720 Input RCA, XLR, ¼” TRS Output RCA (Passive speaker & Active Subwoofer) SNR ≥118dB THD+N 0.002% Frequency Response 20-20kHz（±0.4dB） Speaker Impedance 2-8Ω HPF Frequency 80Hz Subwoofer Output Frequency 20-200Hz RCA Gain Value 19/25dB Input Sensitivity RCA:2V ; XLR:4V Voltage Range DC 32-48V Product Size 3.15*5.51*3.54 inches

AIYIMA A20 MONO Fully Balanced Hi-Fi Amp

300W High-Power Mono Amp for Audiophile Home Audio Systems

Fully Balanced Architecture ;300w High Power Output

Premium Components; Ultra-Low Distortion Audio

Vintage VU Meter Design,Mechanical aesthetics meet modern performance

Balanced XLR | RCA inputs & Subwoofer Out

A20 MONO integrates PFFB technology and a fully balanced circuit to minimize distortion.

Whether building a Dual-Mono Hi-Fi system or a multi-channel home theater,

It serves as the high-purity heart of your audio setup

A Warm Glow Even in Standby

20-minute auto-standby saves energy and extends component lifespan

SUB Out freq is 20–200 Hz

80Hz HPF Bass Management

Let the desktop 2.1 system or multi-channel theater release a rich sense of dynamics

12V Trigger Home Theater Ready

Supports one-key synchronous power on/off, seamlessly integrating into smart home theater systems

Advanced PFFB Tech

19/25 dB Adjustable

Perfectly matching speakers with different sensitivities, completely eliminating background noise.

A precision-crafted heatsink structurerghra

Optimize heat dissipation for continuous and consistent transmission during high-fidelity listening

1 Intelligent Eco-Mode

2 Fully Balanced XLR

3 12V Trigger Sync Control

4 Two-Stage Gain Settings

5 High Efficiency Cooling

Dual 63V 3300μF Caps

Pure Monoblock & Audiophile Parts

Premium WIMA and Rubycon capacitors for high-fidelity signal purity

TPA3255 Class D Amplifier

Ultra-low distortion (<0.002%) and SNR（≥118dB)

300 W @ 4 Ω high output, delivering wide dynamic range and low distortion with ease,

1 Connection Diagram

2 Outstanding Parameters

3 Premium Components

4 TPA3255 & OPA1612 chips

Subwoofer Expansion

Crystal clear stereo with a dedicated subwoofer

Dedicated SUB OUT for 2.1 Hi-Fi or immersive home theater setups

Monoblock Power Amplifier

Flexible Deployment

The ultimate Dual-Mono setup for high-fidelity listening

Balanced XLR Amplifier

Multi-channel power for cinematic immersion

High-Pass Filter (HPF) Filters redundant low-end to protect speakers and boost dynamic range

1 Classic Combination 2.1

2 Audiophile Stereo (2.0)

3 Home Theater (5.1/7.1)

Is this a power amplifier or an integrated amplifier?

The A20 MONO is a fully balanced mono power amplifier. It requires a T20 preamp, D20 fully balanced DAC with Bluetooth, or AV receiver. It’s designed for users who want more power and better sound quality.

Can it drive my passive speakers?

Yes.It delivers up to Max 300W at 4Ω and works with most 4Ω and 8Ω passive bookshelf and floor-standing speakers, providing clean, powerful HiFi sound

What makes the A20 MONO different? Do I need one or two A20 MONO amplifiers?

It features a TPA3255 amplifier,PFFB tech,premium audio components for lower distortion,better detail,and more accurate sound than typical Class D amplifiers.One device for one speaker.For Stereo Sound,use two amp for true dual-mono performance.

Will it work with my DAC or AV receiver

Yes. It supports RCA and balanced XLR inputs,rca and sub output,making it compatible with most DACs(AIYIMA D20), preamps(AIYIMA T20),passive bookshelf speaker,subwoofer, and home theater systems,Build your 2.0/2.1/5.1/7.1 HIFI audio system

Why does the VU meter backlight stay on when the unit is in standby?

We designed the backlight to stay softly on in standby as a vintage desk ambient light. It uses minimal power (<0.5W), keeping your setup aesthetics alive even when music pauses.Bringing soul to your workspace even when the music rests.

【Audiophile Pure Mono Architecture】Pure single-channel design delivers 300W at 4Ω power via the high-efficiency TPA3255 core. Eliminates crosstalk completely to restore a precise, massive soundstage. Perfect for driving large passive bookshelf or floorstanding speakers in home theaters and premium stereo setups
【Advanced PFFB & High SINAD 110dB+】 Integrated Post-Filter Feedback (PFFB) technology drastically reduces distortion and lowers output impedance. Paired with OPA1612 op-amps, it achieves an impressive SINAD of 110dB+ and SNR of 118dB+, delivering a warm, linear, Class-A-like audio performance with deep-sea silence background
【Smart 2.1 Subwoofer Management】Features a dedicated SUB OUT and a built-in 80Hz High-Pass Filter (HPF). Seamlessly diverts heavy bass to your active subwoofer while freeing up main speakers for crisp mids and highs. Build a perfectly balanced 2.1 desktop or studio system without muddy overlap
【Premium Build】Engineered with audiophile-grade German WIMA and Japanese Rubycon 63V/3300μF filtering capacitors for ultimate signal stability
【Smart Power & Home Theater Ready】Equipped with a 12V Trigger linkage port for synchronous one-click power control with your preamps, AV receivers, or DACs. Includes a 2-click gain toggle (19dB/25dB) to match different source input levels and eliminate floor noise, plus an intelligent 20-minute auto-standby power-saving mode
【12V Trigger & Home Theater Ready】Equipped with a 12V Trigger linkage port for synchronous one-click power control with your preamps, AV receivers, or DACs. Includes a 2-click gain toggle (19dB/25dB) to match different source input levels and eliminate floor noise, plus an intelligent 20-minute auto-standby power-saving mode
【Fully Balanced XLR】Featuring audiophile-grade fully balanced XLR inputs, achieving ultra-high signal-to-noise ratio and incredibly low distortion.Uncompromising high-end signal transmission restores a detailed,pure soundstage, enveloping you in the ‘Hear True’ experience.
【Vintage VU Meter】Features a retro warm-lit mechanical VU meter that dances dynamically with the audio rhythm, bringing both aesthetic luxury and real-time visual feedback to your rack. VU Meters with Always-On Ambient Lighting: Features analog VU meters with soft, continuous backlighting that stays active in standby mode, adding a classic retro glow to your desk setup day and night.Add a warmth when you are tired from work