Key Features: Compact mini-size public address amplifier Ideal for classroom sound system use Built-in 100V/70V transformer technology Tabletop amplifier with Mp3 player, FM radio & blue tooth Rated power output at 30W, Speaker output of 100V or 70V & 4Ohms-8 Ohms-16 Ohms Mp3 player with USB/SD input on front panel, IR remote control for Mp3 player, FM radio, and blue tooth LED indicators for power, clip, protect and signal Mic1-3 and lines 1-2 and telephone input. Mic1 of balanced XLR input with phantom power on the rear panel. Mic2-3 microphone or line switchable unbalanced 6.3mm phone jack input. Line 1-2 input of RCA input and one RCA line output. Telephone input with VOX priority and MOH (Music on Hold). Volume control for Mic1-3, line1-2, Mp3/FM, bass/treble and master With short-circuit, clip, overload, and high temp protection AC220V or 115V & 24V DC both operation system

Key Features: Compact mini size public address amplifier Ideal for classroom sound system use Built-in 100V/70V transformer technology Tabletop amplifier with Mp3 player, FM radio & blue tooth Rate power output at 30W, Speaker output of 100V or 70V & 4Ohms-8 Ohms-16 Ohms Mp3 player with USB/SD input on front panel, IR remote control for Mp3 player, FM radio and blue tooth LED indicators for power, clip, protect and signal Mic1-3 and line 1-2 and telephone input. Mic1 of balanced XLR input with phantom power on rear panel. Mic2-3 microphone or line switchable unbalanced 6.3mm phone jack input. Line 1-2 input of RCA input and one RCA line output. Telephone input with VOX priority and MOH (Music on Hold). Volume control for Mic1-3, line1-2, Mp3/FM, bass/treble and master With short-circuit, clip, overload, and high temp protection AC220V or 115V & 24V DC both operation system

Key Features Model: EA-500A Rated Power Output: 500W Speaker Outputs: 100V or 70V & 4-16Ω Power Supply: 230V AC, 50-60Hz Protection: short-circuit, clip, overload, and high temp protection