| Super Polyvox | Programmer 24 | Programmer 24S | Arranger Plus | TS4K | TS3K | MS-5 | |
| Year | 1985 | 1987 | 1989 | 1990 | 1991 | ||
| Keyboard | n/a | 37 | 49 | 61 | |||
| Velocity | no | yes | yes | ||||
| PCM Perc. | 14 | 14 | 15 | 16 | 43 | ||
| Mem. locations | 99 | 0 | |||||
| Pitch Wheel | no | yes | no | yes | |||
| Rhythm Outputs | no | 8 | 1 | 7 | no | no | |
| Output | Stereo | Mono | Stereo | Mono | Stereo | ||
| Headphone | no | yes | |||||
| Power Supply |
Internal |
Internal | External | Internal | |||
| Display | 2 x 7 segments | 3 x 7 segments | 16x2 LCD | 40x2 LCD | |||
| Backup | tape | PCMCIA 64K | |||||
| Sound Gen. Chip | 2xM112 B1 | M114S | |||||
| Chorus | 3xTDA1022 | 1xTDA1022 | 3xTDA1022 | no | DSP | ||
| Processor | Intel P8031@6MHz | Intel P80C31@12MHz | @24MHz | ||||
| Manual | x | x | x | x | |||
| Schematics | x | x | x | x | x | x | |
| Module Version | Arranger Plus -R | TS4 | TS3 | MS-4/MS-3 | |||
One of the most common questions that I get from my readers and customers is "What is the difference between Programmer 24 and 24S?"
Well, there are several differences. Programmer 24S was made to the American market, so the input voltage is 110V. Programmer 24 is 220/240V. Programmer 24S has an extra PCM sound, Crash Cymbal. To achieve this, there are two extra EPROMs (IC10 and IC11) and a small PCB to accommodate these (PB181). All the PCM sound EPROMs were moved to this PCB. The RAM was increased from 2k bytes to 8k bytes. The cymbal potentiometer in Rhythm Volumes on Programmer 24, became Ride in 24S and Clave/Metronome became Crash-Clave/Metronome. In the Accomp. Volumes section, Synt 1-2 Brilliance became Synt Brilliance. In Pattern section, the LED Omni/Time has also No. of Bars on Programmer 24S. Finally, in the Sequencer section, Synt.1 becomes Synt and Synt.2 is now Clear. The button Clear on Programmer 24 is now Chords in 24S. You will also notice that the D2# key has a graphic for the Crash Cymbal in Programmer 24S.
Internally, beside the new PCB (PB181) that connects to EPROM in PB176A with a flat cable, there are some different resistor values for the filters. The code in the 3 system EPROMs is different. I'm still disassembling the code and I'll publish all my findings here.