This amplifier is excellent for Commercial Audio installations using Wall or Ceiling speakers, Home Audio, for for small/medium sized DJ and PA systems.

It supports up to two (2) microphones, RCA line-in, Bluetooth or USB/MP3 input, as well as FM radio.
There is Bass and Treble equalisation,  in addition to balance and Main Volume control. The Microphone section has Mic volume, Echo, and Mic Treble and Mic Bass adjustment.
 
The RCA Pre-Out can be used for connecting to Active Loudspeakers, Active Subwoofers, or additional Power Amplifiers.
 
The maximum speaker load is four (4) 8-ohm Loudspeakers or two (2) 4-ohm Loudspeakers. This amplifier pairs well with our SPEC5 P12 or P10 Loudspeakers or 15" Passive Loudspeakers.
 
Note: This amplifier is intended for use with 8-ohm Loudspeakers and does not support car-audio subwoofers. Please confirm the impedance on your speakers before connecting.
 
Technical Specifications:
 
Model
SX-3500
Description
Stereo Receiver Amplifier
Maximum Power
3500 Watts Peak PMPO
Stereo 8-ohm
100 RMS X 2 @ 8-ohm
Stereo 4-ohm
150 RMS X 2 @ 4-ohm
Frequency Response
20 Hz to 20,000 Hz
Distortion (THD)
<1% THD+N at 20 Hz to 20,000 Hz
Media Player
FM Radio, USB MP3 and Bluetooth
Microphone Inputs
Two (2) Mic Inputs with 1/4" Jack
Microphone Features
Volume, Echo, Treble and Bass
Music Features
Treble and Bass Equalization, Balance
Inputs
CD/DVD and AUX (RCA and 3.5mm)
Outputs
Pre-out and Record Out
Dimensions
430 x 310 x 120 mm
Net Weight
5.7 kg (about 12.5lbs)
Power Supply
120V 60Hz US Plug