Tetraq
| Brand | CQ |
| Manufacturer | CQ Audio Ltd. |
| Function | Speaker (Supertweeter) |
| Produced | 1959-1960 |
| Country | United Kingdom |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Frequency Response | 4kHz-20kHz |
| Driver | 4" Paper Cone (x2) |
| Enclosure Type | Controlled Q Reflex |
| MSRP (1959) | £4 16s |