AIYIMA A20 Stereo Amplifier TPA3255 2.1 Channel HiFi 300W x 2 with Bypass, HPF, and 48V 5A GaN Power Adapter.

Product Specifications: Amplifier chip: TPA3255 Op-amp chip: LME49720 x 2 (plug-in), NE5532 x 7 (chip) Replaceable op-amp chips: LM4562, NE5532, OPA2604, OPA2134, JRC5532, Muse02, etc. Other key components: WIMA capacitors / Rubycon capacitors / Japanese NJW1195 volume IC Input terminals: RCA, XLR Output terminals: SPEAK OUT, SUB OUT Other terminals: 12V trigger input SINAD: 95dB SNR: ≥116dB Dynamic range: 110dB Distortion (THD+N): 0.002% Speaker impedance: 4-8Ω

■【2.1ch Stereo Power Amplifier】 The [AIYIMA] A20 is a Hi-Fi 2.1 fully balanced amplifier, employing a TPA3255 amplifier chip and LME49720 x 2 + NE5532 x 7 op-amp chips. It boasts a high signal-to-noise ratio (≥116dB), low distortion (0.002%), a high dynamic range (≥110dB), dual-channel pure output, and independent low-frequency drive, recreating a realistic sound quality. ■【HPF High-Pass Filter Adjustment】 The multi-gear adjustment allows for tuning the high-pass filter (60-200Hz) to precisely match the low-frequency limit of the speakers. This eliminates low-frequency overload, clarifies the mid and high frequencies, enhances overall sound quality and clarity, reduces distortion, achieves frequency division, and effectively works in conjunction with a subwoofer. ■【BYPASS Volume Bypass Function】 Press and hold the BYPASS button on the back of the device for 3 seconds to switch to volume bypass mode. The role of BYPASS is to bypass the amplifier's own tone adjustments (bass/treble), equalizer (EQ), environmental sound processing (DSP mode, etc.), and most importantly, the preamplifier circuit, transmitting the input source signal to the power amplifier circuit in the most direct and pure form. The volume is also fixed (usually at maximum) and cannot be adjusted. This function is designed for the pursuit of ultimate sound quality and can be integrated into more complex home theater systems: equipped with active subwoofer output, allowing you to build a complete 2.1ch home theater system. ■【Replaceable Op-Amp Design】 The [AIYIMA] A20 employs a TPA3255 amplifier chip and adds a new LME49720 (replaceable) operator chip, allowing for the exchange of diverse operator chips. Replaceable operator models include: LM4562, NE5532, OPA2604, OPA2134, JRC5532, Muse02, etc., enhancing the product’s appeal. Core components include German WIMA capacitors, Japanese Rubycon capacitors, and Japanese NJW1195 volume ICs, aiming for higher and better sound quality. ■Package Contents】 [AIYIMA] A20 Balanced Stereo Power Amplifier x 1, 48V 5A GaN Power Adapter x 1, 12V Trigger Cable x 1, User Manual x 1.

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device's requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.