Fosi Audio BT20A MAX Bluetooth Stereo Power Amp with sleek black design, volume and tone control knobs, and external antenna for wireless audio.
Fosi Audio BT20A MAX with TI TP3255 chip, 300W x2 output, and 112dB SNR for high-performance audio in all usage scenarios.
Fosi Audio BT20A MAX features dual independent power supply for analog and digital channels, ensuring clean and stable audio output.
Fosi Audio BT20A MAX uses Qualcomm QCC3095 chip for high-res Bluetooth 5.0 audio with advanced codecs for detailed wireless sound.
Fosi Audio BT20A MAX delivers 300W x2 at 4Ω, offering compact size with powerful sound for immersive home audio performance.
Fosi Audio BT20A MAX uses PFFB technology to reduce distortion and maintain sound purity in high-fidelity audio playback.
Close-up of Fosi Audio - BT20A MAX Bluetooth Stereo Power Amp showing high-pass filter switch with 80Hz and OFF settings for enhanced vocal clarity.
Fosi Audio BT20A MAX supports Hi-Res Bluetooth 6.0 with LDAC, aptX, and AAC codecs for lossless wireless audio streaming.
Fosi Audio BT20A MAX enhanced cooling design with airflow visualization ensures stable high-power output over long periods.
Close-up of Fosi Audio BT20A MAX motorized analog potentiometer for precise remote-controlled volume adjustment.
Fosi Audio BT20A MAX includes IR remote control for volume, input switching, and Bluetooth reset, enhancing user convenience.
Graph showing Fosi Audio BT20A MAX's exceptional sound quality with ultra-low distortion levels below 0.003% THD+N.
Fosi Audio BT20A MAX power supply diagram showing separate digital and analog circuits for reduced noise and cleaner sound.
Fosi Audio BT20A MAX connection diagram showing integration with speakers, subwoofer, and audio sources for a 2.1 system setup.
Fosi Audio BT20A MAX rear panel labeled with dual RCA inputs, subwoofer output, Bluetooth antenna, and speaker terminals.
Rear panel of Fosi Audio BT20A MAX showing dual RCA inputs and subwoofer output for flexible 2.1 channel audio system setup.

Fosi Audio

Fosi Audio - BT20A MAX Bluetooth Stereo Power Amp

Sale price₹ 27,999Regular price ₹ 44,799

    PFFB technology for ultra-low distortion & high SNR

    300W x2 peak output with 2.1 channel support

    Qualcomm Bluetooth 6.0 with Hi-Res codecs

    Dual independent power supply with ELNA capacitors

    Enhanced cooling with silent fan & optimized airflow

    RCA, Subwoofer output, remote & system trigger support

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Pickup available at Naraina, New Delhi

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Description

The Fosi Audio BT20A MAX is a high-performance Bluetooth 2.1 stereo power amplifier designed for powerful, clean, and versatile home audio systems. Featuring PFFB feedback technology, a dual independent power supply, and premium Japanese ELNA capacitors, it delivers ultra-low distortion ≤0.003% and a high SNR of ≥112 dB for pure and detailed sound. Powered by the TI TPA3255 amplifier chip with NE5532 op-amps, it produces up to 300W x2 peak power to effortlessly drive mainstream speakers. Bluetooth 6.0 with Qualcomm QCC3095 supports Hi-Res codecs including LDAC and aptX Lossless, while RCA inputs, subwoofer output, advanced cooling with a silent fan, remote control, tone adjustment, bypass mode, and 12V trigger make the BT20A MAX a complete and refined 2.1 audio solution.

PFFB LOW-DISTORTION AMPLIFICATION

The Fosi Audio BT20A MAX is the brand’s first stereo power amplifier featuring advanced Post-Filter Feedback (PFFB) technology. This design achieves ultra-low total harmonic distortion of ≤0.003% and a high signal-to-noise ratio of ≥112 dB, while improving linearity and frequency response. By minimizing noise and distortion at the output stage, the amplifier delivers cleaner power, higher efficiency, and exceptionally pure, transparent sound reproduction across all listening levels.

HIGH-POWER 2.1 CHANNEL OUTPUT

Powered by the Texas Instruments TPA3255 Class-D amplifier chip and premium NE5532 operational amplifiers, the BT20A MAX delivers up to 300W ×2 peak power at 4Ω and 180W ×2 RMS output. This high-power 2.1 channel configuration provides excellent speaker control, strong dynamics, and wide soundstage performance, allowing the amplifier to effortlessly drive most bookshelf and floor-standing speakers with authority, clarity, and impactful low-frequency response.

HI-RES BLUETOOTH 6.0 STREAMING

Equipped with the Qualcomm QCC3095 Bluetooth SoC, the BT20A MAX supports Bluetooth 6.0 and a wide range of high-resolution audio codecs, including LDAC, aptX Lossless, aptX Adaptive, aptX HD, aptX, AAC, and SBC. This ensures stable long-range connectivity, low latency, and high-quality wireless audio transmission with a maximum sampling rate of PCM 24bit/96kHz, delivering detailed, high-fidelity sound comparable to wired playback.

DUAL INDEPENDENT POWER SUPPLY DESIGN

The amplifier employs a dual-rail power supply architecture with separate power circuits for digital and analog sections. Combined with high-quality Japanese ELNA capacitors, this design effectively minimizes electrical interference and background noise. The result is a cleaner power delivery, improved signal stability, and a darker, more refined sound background, allowing fine details and dynamic range to be reproduced accurately even during demanding high-power operation.

ENHANCED COOLING & STABILITY

Upgraded from the PRO version, the BT20A MAX features an optimized circuit layout, strategically placed top and side ventilation openings, and a built-in silent cooling fan. This advanced thermal management system improves overall cooling efficiency by approximately 30%, ensuring stable high-power output during extended listening sessions. Enhanced heat dissipation reduces thermal stress on internal components, improving long-term reliability and consistent performance.

VERSATILE 2.1 SYSTEM CONTROL

Designed for flexible home audio integration, the BT20A MAX offers dual RCA inputs, Bluetooth input, and a dedicated subwoofer output for building a refined 2.1 system. A motorized volume knob with included IR remote enables smooth, precise control. Additional features include a high-pass filter for improved speaker clarity, bypass mode for a pure signal path, adjustable bass and treble controls, and a 12V trigger input for synchronized system power management.

Specifications

Brand
Fosi Audio
Model
BT20A MAX
Product Type
Bluetooth Stereo Power Amplifier
Channel Configuration
2.1
Amplifier Chip
TI TPA3255
Op-Amp
NE5532
Max Output Power
300W × 2 @ 4Ω
RMS Output Power
180W × 2 @ 4Ω
Signal-to-Noise Ratio
≥112 dB
THD+N
≤0.003%
Speaker Impedance
2–8Ω
Inputs
RCA 1 / RCA 2 / Bluetooth
Outputs
Speaker Output / Subwoofer Output
Bluetooth SoC
Qualcomm QCC3095
Bluetooth Version
6
Bluetooth Codecs
SBC, AAC, aptX, aptX HD, aptX Adaptive, aptX Lossless, LDAC
Max Bluetooth Sampling Rate
PCM 24bit/96kHz
Bluetooth Range
≤15 m (50 ft)
Frequency Response
20Hz–20kHz (±0.5 dB)
Voltage Input
DC 32V–48V

Box Content

    What will you get
  • 1x Fosi Audio BT20A MAX Power Amplifier
  • 1x Bluetooth Antenna
  • 1x Power Adapter
  • 1x IR Remote Control
  • 1x User Manual

Warranty

1 YEAR WARRANTY

Don't worry, Fosi Audio - BT20A MAX Bluetooth Stereo Power Amp comes with a 1 Year warranty against manufacturing defects. We guarantee that every product on Concept Kart is genuine and backed by the Manufacturer's warranty.

Read more about Concept Kart's warranty policy.

Shipping Policy

FREE SHIPPING ON ALL PREPAID ORDERS

We usually ship orders on same day if ordered before 2 pm or within 24 hours if ordered later (except on holidays/sunday, where processing times may be higher) from one of our domestic warehouses based out of Delhi. It normally takes around 1 to 5 business days for delivery. We use premium service partners such as Blue dart, DTDC and Delivery for faster and reliable service. A tracking number will be provided upon shipment.

In very rare cases when order is not received after 10 business days of shipment (extended by number of days when the govt. Restricts movement of goods due to factors such as coronavirus pandemic), please contact us and we will provide you a support.