ADC RS/3 (RS III)
A diamond-tipped replacement stylus for the ADC "DIGITAL" Series III cartridge, still sold at a premium price
Overview
The RS/3 (RS III) is the replacement stylus for the ADC "DIGITAL" Series III cartridge. It is not a universal fit. It is built for that one cartridge, so when the stylus wears out, this is the part that goes back on. The tip is diamond, which means longer life and precise tracking.
It handles the standard playback speeds—33 and 45rpm—so it’s ready for everything from your vintage LPs to those old 7-inch singles. But don’t even think about 78s; this stylus is not designed for them, and trying to play one could mean a ruined record and a damaged tip. The RS/3 is also labeled as compatible with both mono and stereo records, which gives it some flexibility if you’re digging deep into older pressings. That’s not uncommon for the era, but it’s still a nice touch—no need to keep multiple cartridges on hand just to flip between formats.
The ADC "DIGITAL" Series III was made for ADC, but its use was not limited to one brand of turntable. These cartridges showed up in a range of models from different manufacturers, which spread the need for replacements like the RS/3. If a vintage setup has an ADC cartridge, there is a good chance this is the stylus it wants. It has no engineering drama behind it and no rave reviews about its "warmth." It is respected, and it does its job reliably.
Specifications
| Manufacturer | ADC |
| Diamond tip | Yes |
| Playback speeds | 33 or 45rpm |
| Compatibility | Mono or Stereo ready |
| NOT for 78rpm | Yes |
| Used in many turntable brands | Yes |
| For the ADC "DIGITAL" Series III cartridge | Yes |
| Replacement needle for these ADC stylus models | RS/1 (RS I), RS/2 (RS II), RS/3 (RS III), RS/4 (RS IV), ASTRION XT (Elliott Electronic Supply) |
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