The Blam 704 DSP is a compact 4-channel Class-D car amplifier delivering up to 70 W x 4 at 4 ohms when powered directly from the battery and 50 W x 4 when driven from OEM wiring. It offers high efficiency and a small footprint with dimensions 184 x 114 x 38 mm and maximum operating current 30 A.

Integrated Sigma DSP provides 28-/56-bit processing at 50 MIPS with 24-bit ADC and DAC and greater than 98 dB SNR at 96 kHz sampling. Features include Bluetooth control via Android and iOS apps, time alignment to 2.30 m, 7-band parametric EQ, fully configurable crossovers 0 to 24 dB per octave, six RCA outputs including two configurable for subwoofers, 3D surround and multiple preset storage options.