1. Introduction
The Donner Yellow Fall is a compact analog delay guitar effect pedal designed to deliver warm, natural vintage delay sounds. Its mini size makes it pedalboard-friendly, while its durable aluminum-alloy casing ensures reliability. This manual provides essential information for setting up, operating, and maintaining your pedal.
2. Product Overview
The Yellow Fall pedal features a straightforward design with three control knobs and a footswitch. Its true bypass circuitry ensures your guitar's tone remains unaffected when the pedal is disengaged. The bright yellow finish and compact form factor make it a distinctive addition to any setup.

Figure 1: Top-down view of the Donner Yellow Fall Delay Pedal, highlighting its compact design and control layout.
3. Features
- Analog Delay: Reproduces the warm and natural classic vintage analog delay sound.
- Flexible Delay Time: Offers a delay time range from 20ms to 620ms.
- Adjustable Controls: Features adjustable delay level (Echo) and feedback (F.Back).
- Durable Construction: Housed in a robust aluminum-alloy casing for stability and strength.
- Compact Size: Mini design is ideal for pedalboards with limited space.
- True Bypass: Provides transparent tone when the effect is disengaged.
- LED Indicator: Clearly shows the working state of the pedal.
- Power Requirement: Operates on 9V DC power (power supply not included).
4. Setup
- Power Connection: Connect a standard 9V DC power adapter (center negative, not included) to the DC 9V input jack on the top of the pedal.
- Input Connection: Connect your guitar or the output of a preceding effect pedal to the INPUT jack on the right side of the pedal.
- Output Connection: Connect the OUTPUT jack on the left side of the pedal to your amplifier or the input of a subsequent effect pedal.
- Power On: Ensure all connections are secure before powering on your amplifier and pedal.
5. Operating Instructions
The Donner Yellow Fall pedal features intuitive controls for shaping your delay sound. Experiment with each knob to find your desired effect.

Figure 2: Detailed view of the control knobs on the Donner Yellow Fall Delay Pedal.
Controls:
- TIME Knob: Adjusts the delay time, ranging from 20ms (fully counter-clockwise) to 620ms (fully clockwise). This controls the interval between the original signal and its repeats.
- ECHO Knob: Adjusts the delay level or mix. This controls the volume of the delayed signal relative to your dry signal.
- F.BACK Knob: Adjusts the amount of feedback. This controls how many times the delayed signal repeats. Higher settings result in more repeats.
- Footswitch: Engages or disengages the effect. The LED indicator illuminates when the effect is active.
- True Bypass: When the effect is disengaged, the signal passes directly through the pedal without any electronic processing, preserving your original tone.

Figure 3: The Donner Yellow Fall Delay Pedal integrated into a guitar setup.
6. Maintenance
- Keep the pedal clean by wiping it with a soft, dry cloth.
- Avoid exposing the pedal to extreme temperatures, humidity, or direct sunlight.
- Do not attempt to disassemble or modify the pedal, as this may void the warranty and cause damage.
- Disconnect the power supply when the pedal is not in use for extended periods.
7. Troubleshooting
- No Sound: Check all cable connections (input, output, power). Ensure the power supply is correctly connected and functioning. Verify that your guitar and amplifier are working correctly.
- Weak or Distorted Signal: Check cable integrity. Ensure the ECHO knob is not set too low. Test with a different power supply if possible.
- Unwanted Noise: Ensure you are using a regulated 9V DC power supply. Unplug other pedals to isolate the source of noise. Check for faulty cables.
8. Specifications
| Specification | Value |
|---|---|
| Item Weight | 8.8 ounces (0.25 Kilograms) |
| Product Dimensions | 3.7"L x 1.7"W x 2"H (3.7 x 1.7 x 2 inches) |
| Item Model Number | Yellow Fall |
| Body Material | Aluminum Alloy |
| Color Name | Yellow Delay |
| Connector Type | 2.1mm DC power jack |
| Hardware Interface | 1/4-inch Audio |
| Signal Format | Analog |
| Power Source | Corded Electric |
| Voltage | 9 Volts |
9. What's in the Box
- 1 x Donner Yellow Fall Delay Guitar Effect Pedal
- 1 x User's Manual
10. Warranty and Support
For warranty information or technical support, please refer to the official Donner website or contact your retailer. Keep your purchase receipt as proof of purchase.





