The Down4Sound MM1004 (Mini Maxx) is a compact 4-channel amplifier with band-pass capable crossovers and x1/x10 multiplier ranges for serious tuning flexibility. With independent filtering for CH1/2 and CH3/4, it’s ideal for bi-amping and custom multi-speaker setups in tight installs.

Power Ratings (RMS)

• 100W x 4 @ 4 OHM
• 150W x 4 @ 2 OHM
• 300W – 350W x 2 bridged @ 4 OHM (tested at 14.4V, 1% THD)

Tuning & Specs

• Frequency Response: 10Hz – 23.8KHz
• Signal-to-Noise Ratio: 93dB
• Damping Factor: 100
• Input Sensitivity: 6V – 0.2V
• CH1/2 HPF: 20Hz – 800Hz (x1), 200Hz – 8KHz (x10)
• CH1/2 LPF: 50Hz – 800Hz (x1), 500Hz – 8KHz (x10)
• CH3/4 HPF: 20Hz – 800Hz (x1), 200Hz – 8KHz (x10)
• CH3/4 LPF: 50Hz – 800Hz (x1), 500Hz – 8KHz (x10)
• Bandpass capable
• Clipping indicator
• Working Voltage: 9V – 15.5V

Connections & Size

• Power/Ground: 4-gauge
• Speaker terminals: 14-gauge
• Dimensions: 8.66 inch × 4.87 inch × 2.13 inch (220mm × 123.9mm × 54.3mm)

The MM1004 is a killer solution for compact 4-channel power with full crossover control.