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Specifications

Amplifier Structure: Coupling Capacitor, Mono-Mono Class D Amplifier
Power Structure: Soft Start Circuit, Single-supply
Power Output: 8ohm @ 44W (0.3 THD) 4ohm @ 88W (0.3 THD)
Circuit Protection: Output short / Over Current / Over and Under Voltage / Temperature Protection
Power Stage: Texas Instruments - TAS5121
PWM Controller: Texas Instruments - TAS5010 
ADC Chip: PCM1803A

ConnectivityLine input: 1 x RCA jack (Mono)
Line Output: 1 x Banana connector jack (Mono)

Package Contents
2 - Big Joe IV Mono Block Amplifiers 
2 - 30V DC 3A Power Supply Units
User Manual
Warranty Card
Allen Key

Build Quality

The Big Joe IV Mono Blocks follow a similar design idea being built very tough but offered in a small package.  During our research we noticed that most FSA products seem to follow a similar design styling which is very modern.

If you are still unsure how these components are used together, your source is connected to the Mass Preamp.  The mass preamp controls the volume and source selection for the Big Joe IV power amplifiers. 

Lets open up these units and see what they have going on under the hood.