Big Joe 4 is a pair of mono power amps from Firestone Audio. If you are looking for power amps of higher output and performance than Firestone’s existing Big Joe II or Big Joe III power amps, you’ve just found them! Big Joe IV supplies 44W per channel into 8 ohm speakers and 80W per channel into 4 ohm speakers – giving plenty of power for full sized systems. As mono power amps, they each have a separate case – still the same tiny size as the other Firestone Audio components – and each has their own separate power supply. Being separate mono amps mean that channel separation is better and stereo imaging is improved and means that you can easily site the amps behind your speakers.

Technical Specifications

Amplifier Structure : Coupling capacitor, Mono-Mono Class-D Amplifier
Power Structure : Soft-Start circuit, Single-supply
Sampling Rate : 96kHz / 24bit
Power Output : 8ohm @ 44W (0.3%THD), 4ohm @ 80W (0.3%THD) / 100W (10%THD)
Circuit Protect : Output short / over current / over and under voltage / temperature protect
Characteristic : Built in high quality WIMA capacitor and inductor
Power Stage : TI – TAS5121
PWM Controller : TI – TAS5010
ADC Chip : TI – PCM1803A

Connectivity

Line Input : 1 of RCA jack (Mono)
Line Output : 1 of Banana jack (Mono)

System Requirements

Any pre-amplifier

Package Contents

Big Joe IV x 2
DC30V 3A power adapter x 2
Speaker cord
User manual
Warranty card
Wrench