For offer is a very nice Philips stereovalve / tube amplifier type AG9015 in good working order. It istested and is in good working condition. It comes with all nessesary tubes. Please remember this is oldvintage equipment and it is not serviced / overhauled. Therefore, itis sold `` as is``. It is ``plug & play`` ready but also a verygood and original base to make even better / to your owntaste.This amplifier has an OTL design and works on 800 Ohm speakersand has output ransf...ormers for 8 / 16 ohm .It uses 4x ECC83 , 2X EF86 , 1x GZ34( as rectifier tube ) and 4x EL86 ( as power outputtubes ) . All tubes are included. Some specs: Output power 2x 15 Watt, output impedance 800 / 16 / 8, Size 400 x 185 x 288 mm . Weightabout 12 Kg. Can be used on 110 / 125 / 145 / 200 / 220 or 245 Voltline voltage at 50/60hz