TS-20
| Brand | Monarch |
| Manufacturer | Monarch Electronics International, Inc. |
| Function | Speaker |
| Produced | 1964 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 8.6 × 8.6 × 30.5 cm (W × H × D) |
| Weight | 2lbs (Shipped) |
| Driver | 3" Paper Cone |
| Distributor Price (1964) | $1.75 |