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AIYIMA A20 Class D 2.1 Amplifier
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Aiyima A20 Class D 2.1 Amplifier TPA3255 2x250W 4 Ohm
The Aiyima A20 is a Class D amplifier based on a TPA3255 chip, designed for stereo or 2.1 use. It offers 250W output power under 4Ω per channel, a built-in high-pass filter and a bypass mode, making it a great choice for many Hi-Fi setups.
Aiyima A20: 250W amplification
The Aiyima A20 is a Class D amplifier based on a TPA3255 chip, combined with a post-filter feedback loop (PFFB), reducing distortion and stabilising frequency response. This architecture ensures neutral reproduction, with a THD+N of only 0.002% and a signal-to-noise ratio of 116dB. The A20 delivers up to 250W per channel into 4Ω when paired with a 48V/10A power supply.
Aiyima A20: Complete connectivity
The A20 offers two input modes: unbalanced RCA and balanced XLR, each selectable on the front panel. An additional +3 dB gain can be applied to the RCA input to optimise the level according to the source. Outputs include speaker terminals and a dedicated SUB OUT output for integrating an active subwoofer. The A20 also features a 12V trigger input for synchronising its power-up with the rest of your Hi-Fi system. Finally, a bypass mode allows the A20 to be used as a pure power amplifier, bypassing its internal volume control.
Aiyima A20: 2.1 amplifier
The A20 includes an adjustable high-pass filter, designed to relieve the main speakers of low frequencies and transfer this range to an active subwoofer. This internal management simplifies the setup of a 2.1 system without the need for an external filter or additional DSP.
Aiyima A20: Flawless build quality
In order to deliver the most faithful sound reproduction possible, the A20 uses renowned components such as Rubycon and WIMA capacitors, as well as LME49720 OPAs mounted on DIP8 to ensure interchangeability. The printed circuit board has a total of four layers, all of which are gold-plated. Finally, the aluminium chassis ensures excellent heat dissipation, contributing to the overall reliability of the amplifier.
Review of the Aiyima A20 by Audio Science Review
" ... a very power full amplifier, with low noise and mostly, low distortion. Combine it with good looks and nice functionality such a proper high pass filtering for subwoofer use and you have a winner here. "
Technical characteristics
| Specifications | |
|---|---|
| Product type | 2.1 amplifier |
| Amplifier type | Class D |
| Inputs | 1x Balanced stereo XLR 1x Single-ended stereo RCA |
| Outputs | Speaker terminals 1x RCA for subwoofer |
| Amplification chip | TPA3255 |
| RMS output power 36V/6A | 2x 170W @ 4Ω 2x 100W @ 6Ω 2x 94W @ 8Ω |
| RMS output power 48V/5A | 2x 120W @ 4Ω 2x 110W @ 6Ω 2x 100W @ 8Ω |
| RMS output power 48V/10A | 2x 250W @ 4Ω 2x 210W @ 6Ω 2x 150W @ 8Ω |
| Total harmonic distortion more noise (THD+N) | 0.002% |
| Signal-to-noise ratio (SNR) | ≥ 116dB |
| SINAD | ≥ 95dB |
| Dynamic range | ≥ 110dB |
| Frequency response | 20Hz-20kHz (±0.4dB) |
| General | |
|---|---|
| Supply voltage | 24-48V DC |
| Dimensions | 190 x 142 x 46mm |
| Weight | 1.1kg |
| Color | Black |
| Package | 1x Aiyima A20 Mains adapter 48V/5A |
| Input | RCA |
| Input | XLR |
| Output | Speaker terminal |
| Output | Subwoofer |
| Color | Black |
| Channel | 2.1 |
| Class | Class D / T |
| Amplifier chip | TPA3255 |
| Power (W) | 250.0 |
| Remote Control | No |
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