Fosi Audio BT20A Max black
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Fosi Audio BT20A Max black
The Fosi Audio BT20A MAX is a compact stereo amplifier designed for home Hi-Fi systems, work setups, and sound systems for smaller spaces. It combines a Texas Instruments TPA3255 amplifier chip, PFFB technology, and Bluetooth 6.0 wireless connectivity. Thanks to its output for an active subwoofer, it can also be used as the foundation for a 2.1-channel audio system.
Key Features of the Fosi Audio BT20A Max HiFi Amplifier Black
- Compact stereo amplifier for passive speakers
- Texas Instruments TPA3255 amplifier chip
- NE5532 operational amplifiers
- PFFB (Post-Filter Feedback) technology
- Power output up to 2×300W at 4Ω
- Total Harmonic Distortion ≤ 0.003%
- Signal-to-Noise Ratio ≥ 112dB
- Bluetooth 6.0 with Qualcomm QCC3095 chip
- Supports LDAC, aptX HD, aptX Adaptive, and aptX Lossless codecs
- Analogue RCA input
- Output for an active subwoofer
- Separate power supplies for analogue and digital sections
- ELNA capacitors
- Active cooling with a built-in fan
PFFB Technology for Clean Sound
PFFB (Post-Filter Feedback) technology helps reduce distortion and maintain a flat frequency response even when using different speakers. The amplifier achieves a Total Harmonic Distortion of ≤ 0.003% and a Signal-to-Noise Ratio of ≥ 112dB. The result is a clean and detailed performance with precise vocals, controlled bass, and good separation of individual instruments.
Up to 300W of Power Per Channel
The Texas Instruments TPA3255 amplifier chip, combined with NE5532 operational amplifiers, provides ample power for a wide range of passive speakers. The maximum power output reaches up to 300W per channel at an impedance of 4Ω. The actual power output depends on the power supply used, speaker impedance, and operating conditions.
Separate Power Supplies for Analogue and Digital Sections
The dual power supply architecture separates the analogue and digital circuits, helping to limit mutual interference. A stable power supply is complemented by Japanese ELNA capacitors, which contribute to low noise and preserve the dynamics of the reproduced sound.
Bluetooth 6.0 with Hi-Res Codecs
Wireless connectivity is provided by Bluetooth 6.0 with a Qualcomm QCC3095 chip. Supported codecs enable high-quality audio transmission, low latency, and a stable connection up to a distance of 15 metres.
Supported codecs:
LDAC
aptX
aptX HD
aptX Adaptive
aptX Lossless
AAC
SBC
The availability of individual codecs also depends on the connected phone, tablet, or other source device.
Analogue and Wireless Connectivity
In addition to Bluetooth, an analogue RCA input is available for connecting a CD player, network streamer, DAC, or turntable equipped with an integrated preamplifier. You can switch between analogue and wireless sources using a separate button. The output for an active subwoofer allows you to supplement your stereo speakers with deep bass and create a compact 2.1-channel system.
Efficient Cooling
Vents on the top and side promote natural airflow. At higher operating temperatures, a built-in fan also helps with cooling. The optimised cooling design ensures the amplifier operates stably even under a heavier load.
Specifications
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| Code: | FOSIhifi06 |
| Warranty: | 24 months |
| Links: | Producer's Website: |
| Manufacturer information |
Perfect Sound Group s. r. o. | Čerčanská 640/30 | 140 00 | Praha 4 Krč | [email protected] | +420 722 702 122 
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