The Blam RA501D is a compact 2-channel Class D car amplifier built with surface mount device electronics for reduced size and improved reliability. It accepts low level RCA inputs and high level inputs with automatic turn-on and includes a remote control for level adjustment.

Power ratings are 2 x 80 W RMS at 4 ohm, 2 x 120 W RMS at 2 ohm, and 1 x 240 W RMS bridged at 4 ohm. It features fixed low-pass 120 Hz and high-pass 100 Hz crossovers (12 dB/octave), a frequency response of 20 Hz – 22 kHz, a signal-to-noise ratio greater than 90 dB, and protections for short circuit, low impedance, polarity reversal, and overheating. Dimensions are 160 mm x 91.4 mm x 38 mm. Supplied accessories: mounting screws, user manual, remote control.