Ramsa Panasonic WP1400 Power Amplifier. 
2 Available. Price is each. 
Conservatively/professionally rated 2 x 400 Watts Each. RMS. 4 ohms
Built in Japan. 
Suit high power club/pub/venue/rehearsal install, DJ, etc. So much better than a cheap/new Chinese brand product. 
Cleaned/serviced/Tested/working.