| 1950 - DUAL produces 200,000 electric turntable motors. The diameter |
| of their turntable platters was 210mm and weighed 1.2 kg. |
| 1952 - DUAL produces their own crystal phono cartridge that have a |
| tracking force of 6 grams. |
| 1956 - The first DUAL compact unit is introduced. This has the turntable, |
| amplifier and speakers all in one cabinet. The 1950's are marked |
| as years of great technological advancement in the development |
| of music reproduction. |
| 1958 - The introduction of Stereophonic sound! |
| In the spring, DUAL introduces stereo turntables that come with |
| their cartridges. |
| 1959 - Turntables with four pole motors and idler wheel drive are introduced. |
| DUAL invents a record stabilizing system where records could be |
| stacked for multiple play without a record stabilizing arm on the top |
| of the record stack. |
| DUAL introduces the 1006 turntable. |
| 1960 - Automatic sensing of record size is introduced on the DUAL 1008 |
| turntable. |