Stetsom BOB DSPlayer 400.4 4-Channel Amplifier

Amplification, media playback and DSP in one unit

The Stetsom BOB 400.4 combines a four-channel amplifier, media player, digital signal processing and an integrated automatic 127/220 V power supply. It offers RCA and high-level inputs, plus USB, Bluetooth, FM radio and optical audio connections, according to the seller. Check the official manual and your system’s impedance, wiring and power requirements before installation.

Power ratings listed by the seller

• Stereo at 2 Ω: 4 × 115 W RMS.
• Stereo at 4 Ω: 4 × 65 W RMS.
• Bridged at 4 Ω: 2 × 230 W RMS.
• Bridged at 8 Ω: 2 × 130 W RMS.

Features and connections listed

• Integrated automatic 127/220 V power supply.
• Audio inputs: RCA, high-level and optical; USB, Bluetooth and FM playback are also listed.
• Two RCA outputs with DSP processing.
• Listed DSP controls: equalizer, crossover, level, phase, delay and balance; control through the STETSOM DSPLAYER app is stated by the seller.
• USB playback: MP3 from FAT32 devices up to 64 GB, as listed.
• Frequency response: 20 Hz–20 kHz; signal-to-noise ratio: over 90 dB, as listed.
• Auxiliary output: 12 V / 1.5 A; REM OUT: up to 750 mA.
• Dimensions: 64 × 146 × 197 mm (source does not label the measurement order).
• Listed product weight: 1.4 kg; packed shipping weight was not provided.

Use only with the correct mains voltage and documented wiring. Have a qualified installer verify the power supply, grounding, speaker impedance, ventilation and installation instructions. Published ratings do not establish compatibility with every speaker or vehicle.