1. Introduction
Thank you for choosing the Donner Ultimate Comp Compressor Pedal. This pure analog effect pedal is designed to smooth out the dynamics of your electric guitar or bass, providing a more even and robust sound without degrading the original tone. Its compact design and versatile controls make it an essential tool for any musician seeking precise dynamic control.
Figure 1: Donner Ultimate Comp Compressor Pedal
2. What's in the Box
- 1 x Donner Ultimate Comp Guitar Effect Pedal
- 1 x User’s Manual (this document)
3. Features
- Advanced Compression: Smoothens dynamics between high and low frequencies without degrading the original sound.
- Versatile Tone Control: Features COMP (compression intensity), TONE (brightness), and LEVEL (output volume) knobs for superb sound shaping.
- Two Practical Modes: Includes a mode selector switch for NORMAL and TREBLE signals to satisfy various playing needs.
- Warm and Classical Sound: Exclusive electronic components and circuit design deliver dynamic response for a warm, smooth, and classical tone.
- True Bypass: Ensures transparent tone, maintaining signal integrity without popping, buzzing, or electric noise, and no loss of strength or frequencies.
- Durable Construction: Housed in a reliable aluminum alloy casing for longevity.
4. Controls and Functions
Familiarize yourself with the controls of your Ultimate Comp pedal:
Figure 2: Pedal Layout with Numbered Parts
- DC 9V Input: Power input for a 9V DC power adapter (center negative).
- Output Jack: 1/4-inch audio output to your amplifier or next pedal.
- LEVEL Knob: Controls the overall output volume of the effect.
- TONE Knob: Adjusts the brightness or darkness of the effect tone.
- COMP Knob: Controls the intensity of the compression effect.
- Input Jack: 1/4-inch audio input from your instrument.
- Footswitch: Engages or bypasses the effect. Features true bypass for transparent signal.
Figure 3: Detailed view of COMP, TONE, and LEVEL knobs.
Figure 4: 2-Way Tone Switch (NORMAL/TREBLE).
- NORMAL Mode: Provides a neutral optical compressor sound with warmth.
- TREBLE Mode: Provides a brighter optical compressor sound with more bite.
5. Setup
Follow these steps to set up your Donner Ultimate Comp pedal:
- Ensure your amplifier is turned off or set to a low volume.
- Connect your electric guitar or bass to the Input Jack (6) of the pedal using a 1/4-inch instrument cable.
- Connect the Output Jack (2) of the pedal to your amplifier's input (or the input of the next pedal in your chain) using another 1/4-inch instrument cable.
- Connect a 9V DC power adapter (center negative, 500mA current recommended) to the DC 9V Input (1) of the pedal.
- Turn on your amplifier and adjust the volume to your desired level.
IMPORTANT NOTICE:
- The power supply is NOT included.
- Please power your pedal with a power adapter with 9V DC center negative, and 500mA current.
- The improper power supply may cause pedals not to work or even damage your pedals.
- This product does not come with a battery compartment.
6. Operating Instructions
Once the pedal is set up, you can begin to explore its capabilities:
- Engage the Effect: Press the footswitch (7) to turn the compression effect on or off. The LED indicator will illuminate when the effect is active.
- Adjust Compression Intensity: Rotate the COMP knob (5) clockwise to increase the compression intensity, making your sound more sustained and even. Turn counter-clockwise for less compression.
- Control Tone Brightness: Use the TONE knob (4) to adjust the overall brightness of your compressed signal. Turn clockwise for a brighter tone, counter-clockwise for a warmer, darker tone.
- Set Output Volume: The LEVEL knob (3) controls the overall output volume of the pedal. Adjust this to match the volume of your bypassed signal or to boost your sound.
- Select Mode: Use the 2-way tone switch to select between NORMAL and TREBLE modes based on your desired sound character.
Experiment with different settings of the COMP, TONE, and LEVEL knobs in both NORMAL and TREBLE modes to find the perfect compression for your playing style and musical context.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | EC888 |
| Dimensions | 1.7 x 2 x 3.7 inches (4.3 x 5.1 x 9.4 cm) |
| Weight | 8.8 ounces (249 grams) |
| Material | Aluminum Alloy Casing |
| Color | Blue Compressor |
| Power Requirement | 9V DC (Center Negative) |
| Current Draw | 500mA (recommended) |
| Input/Output | 1/4-inch Audio Jack |
| Signal Format | Analog |
| Bypass Type | True Bypass |
8. Maintenance
To ensure the longevity and optimal performance of your Donner Ultimate Comp pedal:
- Keep the pedal clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Store the pedal in a dry environment, away from extreme temperatures and humidity.
- Disconnect the power supply when the pedal is not in use for extended periods.
- Handle the pedal with care to prevent physical damage to the knobs, jacks, and casing.
9. Troubleshooting
If you encounter issues with your Donner Ultimate Comp pedal, refer to the following common problems and solutions:
| Problem | Possible Cause & Solution |
|---|---|
| No sound when pedal is engaged. |
|
| Sound is distorted or noisy. |
|
| Effect is too subtle or too intense. |
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| LED does not light up. |
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If the problem persists after trying these solutions, please contact Donner customer support for further assistance.
10. Warranty and Support
Donner products are designed for reliability and performance. For information regarding warranty coverage, technical support, or service inquiries, please refer to the warranty card included with your purchase or visit the official Donner website. Keep your purchase receipt as proof of purchase for any warranty claims.
