Introduction
The KORG Pitchblack Poly PB-03 is a high-performance pedal tuner designed for electric guitars and basses. It offers quick and accurate polyphonic tuning, allowing you to check the tuning status of all strings simultaneously. This manual provides essential information for setting up, operating, and maintaining your Pitchblack Poly PB-03 tuner.
Key Features
- Polyphonic Tuning: Displays the tuning status of all strings at once for quick assessment.
- High Precision: Ensures accurate tuning for optimal performance.
- String Seeker Function: Automatically highlights the string being tuned on the display.
- Versatile Tuning Modes: Supports Flat (up to 5 semitones), Capo (up to 7 semitones), and Drop-D tunings.
- Wide Compatibility: Suitable for 6-string guitars and basses.
- Ideal for Floating Tremolo Systems: Facilitates stable tuning for instruments with floating bridges.
Setup
- Power Connection: Connect a 9V DC power adapter (sold separately) to the DC IN jack on the tuner. Alternatively, insert two AAA batteries into the battery compartment.
- Input Connection: Connect your guitar or bass to the INPUT jack using a standard 1/4-inch instrument cable.
- Output Connection: Connect the OUTPUT jack to your amplifier or other effects pedals using another 1/4-inch instrument cable.
- Bypass Mode: The tuner features a true bypass circuit, ensuring your instrument's tone remains unaffected when the tuner is off.

Operation
Turning On/Off
Press the footswitch to turn the tuner on or off. When the tuner is on, the display will illuminate, and your instrument's signal will be muted for silent tuning. When off, the signal passes through unaffected (true bypass).
Polyphonic Tuning Mode
Strum all open strings of your guitar or bass simultaneously. The display will show the tuning status of each string. Red LEDs indicate flat, green LEDs indicate sharp, and a central green LED indicates in-tune. The String Seeker function will automatically highlight the specific string you are adjusting when you pluck it individually.
Chromatic Tuning Mode
For precise single-string tuning, pluck one string at a time. The display will switch to chromatic mode, showing the note name and a precise meter for fine-tuning.
Tuning Modes (Flat, Capo, Drop-D)
The Pitchblack Poly PB-03 supports various tuning modes:
- Flat Tuning: Allows tuning down by up to 5 semitones. Refer to the manual for specific button combinations to activate this mode.
- Capo Tuning: Compensates for a capo, allowing tuning up by up to 7 semitones.
- Drop-D Tuning: Specifically designed for Drop-D tuning, where the low E string is tuned down to D.
Consult the detailed instructions in the full product manual for how to select and adjust these specific tuning modes using the tuner's buttons.
Maintenance
- Cleaning: Wipe the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the tuner in a dry place away from direct sunlight and extreme temperatures.
- Battery Replacement: If using batteries, replace them when the display dims or the tuner malfunctions. Ensure correct polarity when inserting new batteries.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/Display off | Dead batteries or power adapter not connected. | Replace batteries or ensure power adapter is securely connected. |
| Inaccurate tuning | Poor instrument cable connection or external noise interference. | Check cable connections. Ensure you are in a quiet environment. |
| Signal not passing through when off | Faulty cable or internal issue. | Test with different cables. If problem persists, contact KORG support. |
Specifications
| Item | Value |
|---|---|
| Item Weight | 1.07 pounds (approx. 0.48 kg) |
| Package Dimensions | 11.1 x 3.9 x 2.91 inches (approx. 28.2 x 9.9 x 7.4 cm) |
| ASIN | B00ACF0MG0 |
| Date First Available | October 25, 2014 |
| Tuning Range | E0 (20.60 Hz) – C8 (4186 Hz) (approximate) |
| Accuracy | +/- 1 cent |
| Power Supply | 2 x AAA batteries or 9V DC adapter (sold separately) |
Note: Specifications are subject to change without notice for product improvement.
Warranty and Support
KORG products are designed for reliability and performance. This product typically comes with a limited manufacturer's warranty. For detailed warranty information, including terms, conditions, and duration, please refer to the warranty card included with your product or visit the official KORG website. For technical support, service, or inquiries, please contact KORG customer service through their official website or authorized distributors.
Official KORG Website: www.korg.com