PowerBass 4 Channel Compact Amplifier with 480 Watt High Efficiency - ACS4120

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  • 4-Channel 480 Watt High Efficiency Class A/B Design
  • 2-ohm Stable (4-ohm in Bridged Mode)
  • PWM MOSFET Power Supply
  • High Level (Speaker)/Low Level (RCA) Input
  • Remote Soft Delay Turn On/Off Circuit 
  • Variable High/Low Pass Electronic Crossover
  • Selectable 12dB Bass Boost EQ
  • Variable Gain Control
  • Protection Circuit: Impedance Over-load, Speaker Short, Circuit, Thermal Overheating, and DC Output.


PowerBass is pleased to introduce our newest series of Class A/B full range and Class D bass amplifiers. Borrowing from our classic ASA series, these new amplifiers offer the most desired features in the most compact chassis allowable. To accomplish this we selected SMD parts and engineered a brand new 6 oz/kg high density heat sink engineered for maximum efficiency and cooling.

The result a line-up of two, four and mono channel models that offer great performance and fantastic value. Ultra efficient, the ACS amplifiers produce plenty of low distortion high fidelity audio in a footprint small enough to fit nicely in nearly any vehicle. If you are seeking the perfect mix of performance and value look no further.

Input Sensitivity: 0.25 V - 6.0 V
Dimensions (in Inches): 14.8" x 7.1" x 2.0"
Crossover Slope: 12 dB
Peak Power: 960 watts
High-Pass Crossover Freq: Variable 50 Hz - 1 kHz
Low-Pass Crossover Freq: Variable 30 Hz - 250 Hz
Variable Subwoofer EQ: N/A
Subwoofer EQ Frequency: N/A
2-ohm Power: 120 watts x 4
1-ohm Mono Power: N/A
4-ohm Power: 60 watts x 4
4-ohm Mono Power: 240 watts x 2
Switchable Subwoofer EQ: N/A
Depth: 14.8"
Width: 7.1"
Height: 2.0"
Power Supply: Unregulated PWM
Equalization Boost/Cut: N/A
Inputs: RCA, 2 Pairs Input, 2 Pair Speaker Level Input
Variable Subsonic Freq: N/A
Selectable Subwoofer EQ: N/A
S/N Ratio: >100 dB
Total Harmonic Distortion: 0.3% @ Rated Power
Strapped Output Power @ 2ohms: N/A
Output Power (14.4 V) @ 4 ohm: 60 watts x 4
Output Power (14.4 V) @ 2 ohm: 120 watts x 4
Output Power (14.4 V) @ 1 ohm: N/A
Channels (mono): 4
Frequency Response: 10 Hz - 50 kHz

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