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[2021 Upgraded] Bluetooth 5.0 Amplifier Stereo Audio Receiver, 2 Channel Class D Mini Hi-Fi Integrated TPA3116 Amp, for Home Speakers 50W x 2, with 19V 4.74A Power Supply - Fosi Audio BT10A

4.5 out of 5 stars 2,388 ratings

$89.99
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 10% coupon applied at checkout. Terms  
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Enhance your purchase

  • 🍎[UPDATE] Some customers complaint the power supply, we had changed it, the new one is 90 watts that can be carefully matched with this integrated amp physically as well as electrically;
  • Best for bookshelf/computer/desktop/speakers in your room, connect to your Phone/MP3 player/DC/TV/Echo Dot as input, 50W X 2(4 ohms, 20 Hz - 20 kHz, 0.04% THD) can drive 2 Ohm - 8 Ohm speakers;
  • Home Hi-Fi integrated amplifier, Exclusively designed for the customers who pursue HiFi sound; Ship with power adapter and power cord, you can use directly;
  • Bluetooth 4.0 and analog input, Simple compact design but practical and powerful, Adopt TI TPA3116D2 chip to get clear and clarity sound, no audible noise, dead silent when nothing is playing through it;
  • Aluminum shell and Aluminum knob to sure high quality, 18-month warranty, you can return the item if you have any problems;

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Special offers and product promotions

  •  10% coupon applied at checkout. Terms  
  • Save 5% on ♥ Banana Plugs ♥ when you purchase 1 or more ♥ Fosi Audio Amplifier ♥ offered by Fosi Audio AU. Select "Add both to Cart" to automatically apply promo code 3C225UD4. Here's how (terms and conditions apply)

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 10.7 x 8.7 x 3 cm; 739 Grams
  • Date First Available ‏ : ‎ 27 April 2018
  • Manufacturer ‏ : ‎ Fosi Audio
  • ASIN ‏ : ‎ B076XSBCCL
  • Item Model Number ‏ : ‎ BT10A
  • Customer Reviews:
    4.5 out of 5 stars 2,388 ratings

Product guides and documents

Buy it with

  • [2021 Upgraded] Bluetooth 5.0 Amplifier Stereo Audio Receiver, 2 Channel Class D Mini Hi-Fi Integrated TPA3116 Amp, for Home
  • +
  • FosPower Banana Plugs 2 Pairs / 4 pcs, Closed Screw 24K Gold Plated Banana Speaker Plug Connectors for Speaker Wire, Wall Pla
  • +
  • Fosi Audio BT20A Bluetooth 5.0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi-Res Class D Integrated Amp 2.0CH for Passive
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Product Description

Bluetooth 5.0 Mini Hi-Fi Amplifier BT10A
Bluetooth 5.0 Mini Hi-Fi Amplifier BT10A
BT10A BT10A-S BT20A T20 TDA7498E BT30D
BT10A BT10A-S BT20A T20 TDA7498E BT30D
Type Bluetooth 2.0 CH Amp Bluetooth 2.0 CH Amp Bluetooth 2.0 CH Amp Bluetooth Tube 2.0 CH Amp 2.0 CH Amp Bluetooth 2.1 CH Amp
Input Bluetooth + 3.5mm AUX Bluetooth + 3.5mm AUX Bluetooth + RCA Bluetooth + RCA RCA Bluetooth + RCA
Output Passive Speakers Passive Speakers Passive Speakers Passive Speakers + Headphone Passive Speakers Passive Speakers+Active/Passive Subwoofer
Treble & Bass Control
THD ≤ 0.04% ≤ 0.04% ≤ 0.04% ≤ 0.04% ≤ 0.04% ≤ 0.04%
SNR ≥ 98dB ≥ 98dB ≥ 98dB ≥ 98dB ≥ 98dB ≥ 98dB
Terminating Impedance 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm
Power Adapter 19V/4.74A 19V/4.74A 24V/4.5A 24V/4.5A 24V/4.5A 24V/4.5A
Work Voltage AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V
MAX Power Output 50W x 2 50W x 2 100W x 2 50W x 2 160W x 2 50W x 2+100W
Q4 M02 M03 BOX X2 DA2021A ZK-1002T
Q4 M02 M03 BOX X2 DA2120A ZK-1002T
Type DAC+Headphone Amp Subwoofer Amp/Mono Amp Subwoofer Amp/Mono Amp Phono Preamp with Vacumm Tubes Bluetooth DAC 2.1 CH Amp with Remote Control Bluetooth 2.0 CH Amp Board
Input USB + Optical + Coaxial RCA RCA RCA+3.5mm AUX Bluetooth 5.0 + 3.5mm AUX + USB + Optical + Coaxial Bluetooth + 3.5mm AUX
Output RCA + 3.5mm Headphone Passive (Speakers + Subwoofer) Passive Speakers + Active/Passive Subwoofer Active Speakers Passive Speakers + Active Subwoofer Passive Speakers
Treble & Bass Control
THD 0.01% ≤0.03% ≤0.03% ≤ 0.1% ≤0.01% -
SNR ≥105dB ≥106dB ≥106dB ≥ 98dB ≥105dB -
Terminating Impedance 16-200 Ohm 2-8 Ohm 4-8 Ohm - 4-8 Ohm 4-8 Ohm
Power Adapter - 19V/4.74A 32V/5A 12V/1.5A 24V/4.5A -
Work Voltage DC 5V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V DC 12V-24V
MAX Power Output Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. 100W 200W Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. 50W x 2 100W x 2

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4.5 out of 5 stars
4.5 out of 5
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Top reviews from Australia

Reviewed in Australia on 25 November 2021
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Reviewed in Australia on 10 January 2022
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Reviewed in Australia on 11 May 2021
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Reviewed in Australia on 21 October 2021
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Lar reviews&views
4.0 out of 5 stars Good unit, dangerous mains lead
Reviewed in the United Kingdom on 12 December 2019
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20 people found this helpful
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Mamac
2.0 out of 5 stars 付属のACアダプターは異常な動作をし、本体もノイズを発生している
Reviewed in Japan on 27 December 2019
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2.0 out of 5 stars 付属のACアダプターは異常な動作をし、本体もノイズを発生している
Reviewed in Japan on 26 December 2019
本商品に付属している19V4.74AのACアダプターは、完璧と表現できるほどの性能不良品で、使用し続けるのは危険のように思います。
1、負荷電力35%程度で触れないほど過熱します。
2、異常に過熱した時の保護回路が内蔵されていません。よって、限界に達した時は故障します(実際に70%負荷で壊れました)。
3、周囲の機器を誤動作させるほどの破壊的なEMIノイズが発生します(操作していないパソコンの画面が異常な展開をしました)。
4、電圧・電流・電力すべての定格が維持できません。
5、電圧の定格を維持できるのは、1A程度の出力までで、それ以上は定電圧の制御ができなくなり、電圧低下とともにリップルノイズとEMIノイズが盛大に発生してきます。

本体の問題点
1、出力に現れ出るノイズは低域の周波数帯に発生するもので、原因はオペアンプ増幅回路の共通に処理されたバイアス電源回路のインピーダンスが高いため、その高インピーダンスの影響を受け易い極低い周波数領域で正帰還発振の状態となったもので、いわゆるモーターボーディング現象と同様の状態といえるものです(NF式トーンコントロール回路を介して発生しています)。
その現象は音として聞こえ難いものですが、トーンコントロールのBASSを最大にしてウーファのコーン紙を触ると振動していることを認識できる場合があります(スピーカの低域特性に依存します)。
2、音量ボリューム回転位置9時以下で極端なギャングエラーありました(左2:右8)。
3、出力の位相が反転しています。トーンコントロール回路が反転動作になっており、それを補正する設計になっていないのが原因です(他のアンプと併せて使用する際に注意が必要)。
4、出力端子のバナナプラグを差し込む穴の深さが10mmしかなく実用になりませんでした(半分程度しか差し込めずすぐ抜ける)。
5、対になる出力+-端子間の隙間がほとんどないところに、その端子のワイヤーを通す穴が、その隙間のない方向に貫通しているため、それぞれ+-端子の穴に通したワイヤーが突き抜けて短絡する危険性があります。

音質については、最初に聞いた時(一昼夜の通電後)非常に強い違和感がありました。
使用されているアンプICのTPA3116の特性はよく知っていることから、この違和感の解明が始まってしまいその結果として、違和感(=音質劣化)の原因は、付属ACアダプターの性能不良と、本体回路の異常な正帰還発振にあると判明した次第です。

なお、Bluetoothの接続は良好で問題ありませんでしたが、もし、状態が良くない場合は、付属のACアダプターを疑ってください。EMIノイズの影響を受けている場合があります。

後日、本商品のトーンコントロールが取り除かれたアンプが、異なるブランドから発売されていることが分かり、それを購入しましたが、ACアダプターに問題なく、本体は「本体の問題点 5項」を除き問題ありませんでした。
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87 people found this helpful
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Ricky Dixon
3.0 out of 5 stars Great Amplifier
Reviewed in the United Kingdom on 5 February 2020
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5 people found this helpful
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Gordon Taylor
4.0 out of 5 stars Good sound, dangerous mains plug
Reviewed in the United Kingdom on 19 October 2019
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8 people found this helpful
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Evelyn
3.0 out of 5 stars Okay but not great and not smart
Reviewed in the United Kingdom on 2 February 2020
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3 people found this helpful
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