The revolutionary Planet Waves S.O.S. Guitar Tuner pulses two out-of-phase LED light beams directly onto the vibrating string. When the string is out of tune, the two lights will visually dance on the string being tuned. As you approach in-tune status, the movement slows down and eventually stops when you are perfectly in tune. This revolutionary visual tuning system enables precision tuning in silent or noisy environments, with the need for audible sound or sensing of any kind.
| Condition | New |
|---|---|
| Brand | Planet Waves |
| Part No. | PW-CT-06 |
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What it does, it does well, Review by A Dreamer
Quality Features Overall Price Value First the caveats:
1. It only works with strings. ('useless for horns, steel drums, etc.)
2. It only tunes the basic six guitar notes, E,B,G,D,A,E, & absolutely nothing else.
3. The thing has a bit of a learning curve to it.
If you can live with the above limitations, the SOS is pure dynamite. It works by pulsing two LEDs at the frequency of the note you select. They're 180 degrees out of phase with each other, so their light on the string allows one to "see" the vibration until the string is perfectly in tune. The process, once you get the hang of it, is dead-on accurate and works quite well in a dimly lit, noisy environment because it's optical, not sonic. You turn its dial to the note you want, pluck the string with the built-in pic, and shine the two lights at the string. If you practice, it can be quite fast and precise at a level way, way beyond its meager price. I was dazzled. (My wife says I'm easily amused.) (Posted on 10/21/10)




