AIYIMA A20 TPA3255 Fully Balanced Stereo Amplifier with XLR,HPF

Product description

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AIYIMA A20 HiFi 2.1 Fully Balanced Amplifier

AIYIMA A20 is a 2.1-channel fully balanced high-fidelity audio amplifier series. The HPF design is a god-level function for building a 2.1 system, which can effectively protect the main speakers and improve the clarity of the mid-frequency

All-in-one high-fidelity home audio system

XLR/RCA (±3dB Adjustment) two sets of input modes can be switched freely.Users can not only change the op amp to tune the sound, but also deeply participate in system construction and optimization through functions such as HPF and BYPASS

TPA3255 amp chips

Four-layer gold-plated PCB board design

Low distortion and noise,delivering a combination of high efficiency and superior sound quality

Reference-Grade Performance(THD+N & SNR) Experience different tonal characteristics

Replaceable Op-Amp Models: LM4562, NE5532, OPA2604, OPA2134, JRC5532, Muse02, etc

1 Output Power Meter

2 Internal components

3 Performance parameters

4 Swappable Op-Amps Design

5 Connection Diagram

Fully Balanced Circuit +PFFB

High-performance circuit design delivers ultra-low distortion and pure signal reproduction

Adjustable High-Pass Filter(HPF) (60-200Hz)

Multi-level adjustable high-pass filter,precisely matches the low-frequency cutoff of speakers

Press and hold for three seconds to start

The system integration is more flexible, delivering pure lossless audio quality

Support intelligent linkage switch Dual-sided ventilation cooling design

The internal air convection design ensures long-lasting and stable high-power operation

1 Circuit Design

2 HPF Function

3 BYPASS Function

4 12V TRIGGER

5 Advanced Cooling System

Output power 300W*2 (4Ω)(TPA3255 amp chips) 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 Distortion (THD+N) 0.002% Dynamic Range ≥110dB Speaker impedance 4-8Ω Frequency response 20Hz-20kHz (±0.4dB) Other functions Features 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

AIYIMA A20 Fully Balanced Amplifier With Subwoofer

The A20 Amp with subwoofer output, which can be upgraded from a 2.0 high-fidelity system to a 2.1 shocking theater system, allowing you to enjoy a carpet-like vibration viewing and gaming experience

AIYIMA A20 HiFi Amplifier for Passive speaker

The A20 power amplifier provides powerful and clean power, easily drives the P600 passive speaker, and controls various music types

The P600 passive speakers use high-quality drivers to deliver balanced three-frequency performance: crisp highs, rich mids, and deep bass

The A20 fully Balanced amplifier provides strong and clean power to easily drive the P600 desktop passive speakers,Ingenious combination to present you with a pure studio-level listening experience

What is a High-Pass Filter (HPF)?

It allows high-frequency signals to pass through while blocking (or attenuating) low-frequency signals

What is the function features of a high-pass filter(HPF)?

Protecting the main speakers; Improving overall sound quality and clarity: Reducing distortion, enhancing mid- and low-frequency clarity, and increasing power headroom; Implementing crossover and working in conjunction with the subwoofer

Why are the values ​​60/80/120/200Hz marked?

To match the characteristics of the speakers, protect and compensate for their shortcomings, align with human hearing and acoustic principles, and provide flexible debugging options,Please tell me for more details

Can you explain the Bypass function?

It allows the amp to bypass its internal tone controls (Bass/Treble), equalizer (EQ), and most importantly the preamplifier circuit. In this mode, the input signal is delivered to the power amplification stage in the most direct and unaltered way

What are the purposes and use cases for which this bypass feature is included?

Pursue ultimate sound quality, minimize signal loss and distortion, and use the amplifier as a pure power amplifier. Configure an active subwoofer output to create a complete 2.1 home theater system

【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