1. Producte acabatview
The Donner DBM-100 is a versatile 3-in-1 digital device combining a metronome, tuner, and tone generator. Designed for musicians, it features a rechargeable battery, a clear VA HD LCD display, and a compact, portable design. This manual provides instructions for its proper use and maintenance.

Imatge 1.1: Frontal view of the Donner DBM-100 Metronome Tuner, showcasinla seva pantalla i els botons de control.
2. Contingut del paquet
- Donner DBM-100 Metronome Tuner
- USB-C Charging Cable (charger not included)
- Manual d'usuari (aquest document)
3. Disseny i controls del dispositiu

Image 3.1: Diagram illustrating the various parts and controls of the DBM-100.
- 3.5 mm Headset Output Interface: Per connectar auriculars.
- TYPE C Power Input Interface: Per carregar el dispositiu.
- Indicator Screen: The main display for all modes.
- Indicador de nivell de bateria: Shows current battery charge.
- Cent Value and Metronome Display: Shows tuning deviation or metronome settings.
- Control de volum: Ajusta el volum de sortida.
- Note Value: Displays the detected note in tuner mode.
- Hz Value Display/BPM Speed Value: Shows frequency in tuner mode or tempo in metronome mode.
- Sound Source Indicator: Shows selected metronome sound.
- Indicador LED: Provides visual feedback for tuning and rhythm training.
- Function and Parameter Adjustment Buttons (Up/Down/Select): S'utilitza per navegar pels menús i ajustar la configuració.
- Pickup Microphone: Internal microphone for sound detection.
- Ajust del volum de sortida: Physical knob for volume control.
- Mode Switch (MENU button): Cycles between Tuner, Trainer, and Metronome modes.
- Botó TAP: Used for tempo detection in metronome mode.
- Botó Font: Changes metronome sound source.
- Botó d'engegada/reproducció/pausa: Turns the device on/off and starts/stops the metronome.
4. Configuració i funcionament bàsic
4.1. Càrrega del dispositiu
The DBM-100 features a built-in rechargeable lithium battery. To charge, connect the provided USB-C cable to the TYPE C Power Input Interface (2) on the device and to a standard USB power adapter (not included). A full charge takes approximately 2.5 hours and provides up to 12 hours of use.

Image 4.1: Illustration of the DBM-100 being charged, highlighting its rechargeable nature.
4.2. Encendre/apagar
Press and hold the Power/Play/Pause Button (17) to turn the device on or off.
4.3. Selecció de mode
Press the Mode Switch (MENU button) (14) to cycle through the available modes: Tuner, Trainer, and Metronome.
5. Modes de funcionament
5.1. Mode de sintonitzador
In Tuner mode, the device detects the pitch of your instrument. The display shows the detected note (7), its frequency in Hz (8), and a visual indicator of tuning accuracy (5).

Image 5.1: The DBM-100 display in Tuner mode, showing frequency adjustment and instrument type selection.
5.1.1. Instrument Settings
The tuner supports 5 instrument tuning settings: Chromatic (C), Guitar (G), Ukulele (U), Bass (B), and Violin (V). Use the Function and Parameter Adjustment Buttons (11) to select the appropriate instrument mode.
5.1.2. Ajust de freqüència
The reference pitch (A4) can be adjusted from 430Hz to 450Hz. Use the Up/Down buttons (part of 11) to change the A4 frequency.
5.1.3. Tuning Indication
- The needle on the display (5) indicates pitch deviation.
- When the needle is centered and the LED indicator (10) turns green, the note is in tune.
- If the needle is to the left, the note is flat. If to the right, the note is sharp.
5.2. Metronome Mode
The metronome provides a steady beat for rhythm practice. It offers a tempo range of 30-280 BPM and adjustable beat accents.

Image 5.2: The DBM-100 display in Metronome mode, showing tempo, beat, and sound source options.
5.2.1. Tempo Setting
Use the Up/Down buttons (11) to adjust the tempo (BPM) from 30 to 280.
5.2.2. Beat Accent Setting
The metronome supports beat accents from 0 to 9. Use the Select button (11) to cycle through the beat settings and the Up/Down buttons to adjust the value.
5.2.3. Sound Sources
Press the Source button (16) to switch between 3 instrument sounds and 1 vocal count. The current sound source is indicated on the display (9).
5.2.4. Ajust de volum
Adjust the output volume using the physical Output Volume Adjustment knob (13) on the side of the device. A 3.5mm headphone jack (1) is available for private practice.
5.2.5. Tempo Detection (TAP Function)
Press the TAP button (15) in rhythm with a song or desired tempo. The device will detect and display the BPM.
5.3. Trainer Rhythm Mode
This mode helps improve rhythm accuracy. The built-in microphone (12) detects your playing and provides visual feedback if your sound aligns with the current rhythm pattern.

Image 5.3: The DBM-100 in Trainer Rhythm Mode, showing the light display for feedback.
5.3.1. Feedback Mechanism
- The LED indicator (10) provides dynamic feedback.
- A green light indicates correct timing.
- Red lights indicate timing deviation (too early or too late).
- This mode can be used for "blind test" training, where the metronome sound temporarily mutes, and you rely on the visual feedback.
5.4. Tone Generator Mode
The DBM-100 can generate specific tones for ear training or reference. To access this mode, first select TUNER mode using the Mode Switch (14). Then, use the Up/Down buttons (11) to adjust the pitch of the generated tone.
6. Manteniment
6.1. Neteja
Netegeu el dispositiu amb un drap suau i sec. No utilitzeu netejadors líquids ni materials abrasius.
6.2. Cura de la bateria
To prolong battery life, avoid fully discharging the device frequently. Charge it regularly, even if not in constant use. Store in a cool, dry place.
6.3. Emmagatzematge
When not in use for extended periods, store the DBM-100 in its original packaging or a protective case to prevent damage from dust or impacts.
7. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El dispositiu no s'encén. | Bateria baixa o esgotada. | Carregueu el dispositiu amb el cable USB-C. |
| Tuner is inaccurate or inconsistent. |
|
|
| Tuner does not detect low notes (e.g., cello). | Frequency range limitations for very low notes. | While designed for a wide range, extremely low frequencies may be challenging for any clip-on or internal microphone tuner. Ensure the instrument is producing a clear, sustained tone. |
| Metronome sound is too low. | La configuració del volum és massa baixa. | Adjust the Output Volume Adjustment knob (13) on the side of the device. Consider using headphones (1). |
8. Especificacions
| Característica | Detall |
|---|---|
| Número de model | DBM-100 (EC6954) |
| Funcions | Tuner, Metronome, Tone Generator, Trainer Rhythm Mode |
| Interval d’afinació | Chromatic (C), Guitar (G), Ukulele (U), Bass (B), Violin (V) |
| A4 Frequency Range | 430 Hz - 450 Hz |
| Interval de tempo del metrònom | 30 - 280 pulsacions per minut |
| Metronome Beat Accents | 0 - 9 beats |
| Mostra | VA HD LCD Color Display |
| Font d'alimentació | Rechargeable Lithium Polymer Battery (included) |
| Temps de càrrega | Aprox. 2.5 hores |
| Temps d'ús | Fins a 12 hores |
| Pes de l'article | 6.3 unces (aprox. 178 g) |
| Dimensions | 5.31 x 4.45 x 1.22 polzades (aprox. 13.5 x 11.3 x 3.1 cm) |
9. Garantia i Suport
For warranty information and technical support, please refer to the official Donner weblloc web o poseu-vos en contacte amb el vostre distribuïdor. Conserveu el rebut de compra per a reclamacions de garantia.





