Fosi Audio BT20A MAX Amplifier - 48V

Product detailed description

Sound that draws you in.

Fosi Audio BT20A MAX is Fosi Audio's flagship stereo amplifier, designed for maximum power, flexibility and sound clarity. It combines cutting-edge PFFB technology, the powerful TPA3255 amplifier chip and Hi-Res Bluetooth connectivity in a compact body that fits easily into any audio system.

PFFB technology – clarity without compromise

PFFB (Post-Filter Feedback) technology significantly reduces distortion (<= 0,003 %) and increases the signal-to-noise ratio (>= 112 dB). The result is exceptionally clean, neutral and detailed sound with an accurate frequency response and greater efficiency across the whole system. Music sounds natural, lively and full of emotion – with realistic vocals, tight bass and clearly separated instruments.

A versatile solution for every situation

The BT20A MAX adapts to home listening, a study or an outdoor setup. It's ideal as the main amplifier for a modern hi-fi system or as a secondary compact high-power solution. Thanks to the dedicated subwoofer output, you can easily create a 2.1 system. Switching between analogue and wireless sources is instant with a dedicated button.

Dual power architecture

Separate power for the digital and analogue sections minimises interference and ensures a stable, clean power supply. Combined with Japanese ELNA capacitors, it delivers an even blacker background and better dynamics.

Performance that surprises

TPA3255 + NE5532 – a proven combination

At the heart of the amplifier is the Texas Instruments TPA3255 chip, complemented by NE5532 op-amps. Precise tuning by Fosi Audio's acoustic team ensures a natural character, musical bass and excellent instrument separation.

Up to 300 W per channel

Maximum output 300 W per channel (4 Ω) provides plenty of headroom for most standard speakers. The BT20A MAX handles both the fine details of vocals and dynamic passages with a wide soundstage.

Advanced cooling

Optimised ventilation openings on the top and sides ensure efficient airflow. An improved circuit design and built-in quiet fan increase cooling efficiency by 30%, meaning stable performance even under heavier loads.

Hi-Res Bluetooth 6.0

Modern Bluetooth 6.0 with the Qualcomm QCC3095 chip supports a wide range of high-quality codecs, with a stable, low-latency connection and high-resolution audio at distances of up to 15 metres.

• LDAC

• aptX

• aptX HD

• aptX Adaptive

• aptX Lossless

• SBC / AAC

Connection options:

As well as the latest Bluetooth wireless technologies, the amplifier also features classic analogue RCA inputs for connecting an external source (CD/streamer, turntable, etc.)

Box contents:

Official Fosi Audio BT20A MAX website

Hi-Fi Voice magazine review