BigJoe2 Power Amplifier from Firestone Audio.
This is a Class-D integrated amplifier with "push/pull" technology. It can be used for a longer period of time with high power efficiency and low power consumption. The amplifier has 4 gain control settings to adjust perfectly to your application. The BigJoe2 also offers a by-pass for it's own volume control. This turns the BigJoe2 into a pure power amplifier, and you can use your own pre-amplifier.

Features:

Class-D Integrated Amplifier, can perform long time with high power efficiency and low power consumption. Four types of gain controls can adjust power or amplitude of signal. By-pass jumper for integrated volume control, to fit with external pre-amplifier.

 
Specifications:

 Amplifier Structure : Coupling capacitor, Class-D
 
 Power Structure : Soft-Start circuit, Single-supply
 
 Gain Control : 20dB / 26dB / 32dB / 36dB selectable
 
 Power Output : 8ohm @ 20W (10%THD), 4ohm @ 20W (0.3%THD)
 
 Circuit Protect : Output short / over current / over and under voltage / temperature protect
 
 Characteristic : Built in high quality WIMA capacitor and inductor
 
 Main Amp : TI = TPA3100D2

Connectivity:

 Line Input : 1 of RCA jack
 
 Line Output : 2 of RJ45 jack (stereo)
 
System Requirements:

 Using in any equipment with Line-out or Pre-out function

 
Scope of supply:

 Big Joe II
 
 DC19V 3.42A power adapter
 
 Speaker cord
 
 User manual