| Model # | Tape Format | Shop location | Years Produced | Number Produced |
| 100 | 1/4 in. single track | Upland Ca. garage behind the family home. | 1948-1949 | at least 4 maybe as many as 10. |
| 200 | 1/4 in. single track | First 10 in the Upland residence (garage). Subsequent numbers were built in the first factory in Upland Ca. | 1951-1959 | 100 +/- |
| 300/350 remotes | 3/8ths in. 3 track | Ontario Ca. | 1960-1969 | 200 +/- |
| 400 | 3/8ths in. 3 track | Ontario Ca. | 1961 | 1 |
| 500 | 3/8ths in. 3 track | Ontario Ca. | 1961 | 2 or 3 |
| 600/660 | 3/8ths in. 3 track | Ontario Ca. | 1962-1969 | 200 + |
| 25/35/45 Rhythmate | 3/8ths in. 3 track | Ontario Ca. | 1960-1969 | 100+ |
| 20/30/40 Rhythmate | 1 in 16 track. | Upland Ca., new factory. | 1975-1980 | 10+ |
| 800 Riviera | 1/2 in. 8 track | Upland Ca. | 1970 | 2 |
| M1, M2, M4 | 1/2 in. 8 track | Upland Ca. factory until 1980, the last few instruments were built by Richard back in the original garage behind the family home. | 1970-1981 | 100+ |