3187 - Tan Magnatone Custom 280 High Fidelity Stereo-Vibrato Tube Amplifier
| Years | 1957-1962 |
| Series | Custom 200 Series |
| Channels | two |
| No. Tubes | 12 |
| Power | 4x 6CZ5 (260) |
| Power | 4x 6973 (260A) |
| Power Bias | fixed bias |
| Preamp | 2x 12AX7 |
| Vibrato | 6CG7, (1/2) 12AX7 (260) |
| Vibrato | 6CG7, 12BH7 (260A) |
| Phase Inverter | 2x 12AX7 |
| Speaker | 2x Oxford 12L5N 12" |
| Speaker | 2x 5" or 2x 5x7" |
| Rectifier | 5U4GB |
| Output | 50 watts peak |
| Weight | 55 lbs. |