| Year: | 1968-1972/73 |
| Model: | ORS100/GRO100/OR100 |
| Model Number: | ORS100/GRO100/OR100 |
| Config: | Head |
| Control Panel: | Plexi panel |
| Control Panel Layout: | Input - F.A.C. - Bass - Treble - H.F.Boost - Gain - Reverb Send - Reverb Return - Pilot Light - Power |
| Rear Panel Layout: | Mains chord - Voltage selector - 2 fuse holders - Slave output - Impedance selector - 2 speakers outs |
| Cabinet: | size? |
| Weight: | |
| Speakers/Load: | 4/8/16 Ohms |
| Speaker model: | N/A |
| Effects: | N/A |
| Output: | 100 Watts |
| Preamp tubes: | 1.5 x 12AX7 ??? |
| Power tubes: | 4 x EL34 |
| Bias: | Fixed bias |
| Rectifier: | solid state |
| Phase Inverter: | Cathodyne type: 1/2 x 12ax7 |
| Circuit: | certain type of schematic?(link to schematic?) |
| Chassis layout: | certain type of layout (pcb number/hand-wired?) |
| Comments: | These are the original "Graphic" models. According to a thread in the Plexiplace Orange Forum there are three virtually identical types of amps that have a pics-only description of the knob functions. The model number of this type changed from ORS100 over GRO100 to OR100 without much changes inside the amp. Eventually this lead to the OR120/OR80 Graphic range with text and small pics. It is not very clear if there are OR120 amps with Graphics only. |
