The Fosi Audio M03 is a hi-fi subwoofer amplifier utilizing the efficient TPA3255D2 chip
delivering a maximum output power of up to 200 watts - with 150 watts RMS at 4 ohms and 120
watts at 8 ohms. This amplifier is suitable for both bookshelf speakers and subwoofers
providing clean and powerful sound quality. The amplifier can operate as both a subwoofer and
full-range mono amplifier by switching to PBTL mode which is ideal for passive speakers and
active subwoofers. When set to SUB mode it functions as a dedicated subwoofer amplifier.
Compact yet powerful the M03 features a built-in low-pass filter with frequency control
adjustable from 20 to 300 Hzperfect for subwoofers. This small and efficient solution is
designed for home use and hi-fi enthusiasts seeking high sound quality. The maximum output
power is 200 watts and it comes with a 32V 5A power supply. For maximum power output a more
powerful power supply is recommended. The M03 model delivers an RMS power of 200 watts at 4
ohms and 100 watts at 8 ohms with an impedance range of 4 to 8 ohms. Input sensitivity is ?
0.2 mV and the frequency response ranges from 20 Hz to 20 kHz with a ±3 dB tolerance. The bass
range is adjustable between 20 and 200 Hz. Total harmonic distortion (THD) is under 0.03% and
the signal-to-noise ratio (SNR) is at least 106 dB. The amplifier operates on a DC input of 24
to 48 volts and includes a 32V 5A power supply.
