Orange Amp Field Guide: OR80R Reverb Overdrive Combo

OR80R Reverb Overdrive Combo

original ebay info

Year: 1976 or later
Model:OR80R Reverb Overdrive Combo
Model Number:OR80R
Serial Numbers:Chassis: 14010
Cabinet: 62192
Control Panel Layout:Input - F.A.C. - Bass - Treble - Presence - Gain - Master - Echo Pot - Echo footswitch jack - Pilot Light - Power
Rear Panel Layout:mains chord - Mains selector - 2 Fuse holders - Slave Output - impedance selector - 2 Speaker Outputs (same impedance?)
Speaker model:25W Celestion Greenbacks /30w Celestion Greenbacks ("Orange" label)
Effects:Reverb tank on bottom of cabinet, electronics embedded in chassis
Output:80 Watts
Preamp tubes:3.5 x 12AT7 (ECC81)
I think originally it must have been two ECC83s and two ECC81s...
Power tubes:2 x EL34
Bias:Fixed bias
Rectifier:solid state
Phase Inverter:Cathodyne type: 1/2 x ECC81 or 1/2 x xECC83
Circuit:This is probably a merge of an OR80 with the Orange reverb schematic that normally has a separate housing.
Chassis layout:The two remaining power tube sockets are used two put 9 pins tubes, so there are four sockets in total for preamp and reverb drive and recovery tubes.