1. Introduktion
The DOUBLE OS1 Resonance Pickup On-board Preamp is an innovative system designed to enhance your guitar's acoustic sound. It features SFT (Same Frequency Trans) technology, which drives the guitar body to resonate, increasing frequency response and making the sound more resonant, solid, and dynamic. This preamp also includes built-in Reverb, Chorus, and Delay effects, along with Bluetooth 5.0 connectivity for practice accompaniment. It utilizes a dual-pickup system combining a piezo pickup and a microphone to capture and enrich every detail of your playing.
2. Pakkens indhold
Kontroller venligst pakken omhyggeligt for at sikre, at alle varer er til stede:
- 1 x OS1 Resonance Pickup On-board Preamp Enhed
- 1 x endestik
- 1 x Vibrerende horn
- 1 x Pickup-ledning
- 1 x Type-C ladekabel
- 2 x monteringsclips
- 1 x Brugermanual (dette dokument)

3. Produktet er slutview
The DOUBLE OS1 preamp features an intuitive control layout and robust connectivity options.

Kontrol og grænseflader:
- Controller: Main rotary knob for volume and menu navigation.
- Skive-LED Lamp: Visual indicator for various functions and levels.
- Indikator: Status lys.
- Type-C interface: For high-speed charging.
- BT (Bluetooth): Button/indicator for Bluetooth connectivity.
- AUX: Aux-indgang til eksterne lydkilder.
- rumklang: Effect control button.
- Kor: Effect control button.
- Forsinke: Effect control button.
- Mikrofon: Microphone input/control.
- Input/output porte: Standard audio input and output connections.

4. Opsætning og installation
Important Note: This is an on-board preamp that requires opening holes in your guitar for proper installation. Professional installation is recommended.

Installationstrin:
- Prepare Guitar: Carefully mark and cut the necessary openings on your guitar body for the preamp unit and end-pin jack.
- Installer endestiksstik: Secure the end-pin jack into its designated hole.
- Tilslut pickup-ledningen: Connect the pickup wire from your guitar's internal pickup to the preamp enhed.
- Install Vibrating Horn: Mount the vibrating horn inside the guitar body, ensuring good contact for optimal resonance.
- Mount Preamp Enhed: Fastgør hovedforberedelsenamp unit into the prepared opening on the guitar body using the provided clips or appropriate fasteners.
- Indledende opkrævning: Before first use, fully charge the preamp ved hjælp af Type-C-kablet.
Opladning af batteriet:
The OS1 preamp is equipped with a 2000mAh rechargeable lithium battery. To charge:
- Connect the provided Type-C cable to the Type-C interface on the preamp.
- Tilslut den anden ende af kablet til en passende USB-strømkilde (f.eks. computer, USB-vægadapter).
- The indicator light will show charging status (refer to product for specific light behavior).
- A full charge significantly increases the charging rate by 50% compared to standard charging.

5. Betjeningsvejledning
Tænd/sluk:
The main Controller knob likely serves as the power switch. Rotate or press the Controller knob to power the unit on or off.
Justering af effekter:
- rumklang: Press the 'Reverb' button to activate/deactivate the reverb effect. Rotate the Controller knob to adjust the reverb level.
- Kor: Press the 'Chorus' button to activate/deactivate the chorus effect. Rotate the Controller knob to adjust the chorus level.
- Forsinke: Press the 'Delay' button to activate/deactivate the delay effect. Rotate the Controller knob to adjust the delay level.
Bluetooth-forbindelse (BT5.0):
- Press and hold the 'BT' button until the indicator light flashes, indicating pairing mode.
- On your mobile device, search for 'DOUBLE OS1' (or similar name) in the Bluetooth settings.
- Vælg den enhed, der skal parres. Når den er tilsluttet, lyser indikatorlampen konstant.
- You can now play background music from your device through the preamp for practice or accompaniment.
Mikrofonbrug:
The built-in microphone captures the guitar's natural acoustic sound. For the microphone's effects to be audible and effective, the preamp must be connected to an external speaker or amplivligere.
AUX-indgang:
Use the AUX input to connect external audio devices directly to the preamp. This allows you to mix external audio with your guitar sound.
6. Vedligeholdelse
Batteripleje:
- The OS1 uses a 2000mAh 18650 rechargeable battery.
- Do not expose the battery to high temperatures, fire, or water.
- Batteriet må ikke skilles ad eller modificeres.
- Undgå at kortslutte batteriet.
- Bortskaf altid batterier forsvarligt i henhold til lokale regler.

Rensning:
Tør enheden af med en blød, tør klud. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
7. Fejlfinding
- Enheden tændes ikke: Ensure the battery is fully charged. Check that the battery is correctly inserted into the compartment.
- Ingen lydoutput: Verify all cables (pickup wire, output to amplifier) are securely connected. Check the volume level on both the preamp og din amplivligere.
- Microphone not effective: Sørg for, at præ-amp is connected to an external speaker or amplifier. The microphone's effects are primarily heard through an amplified output.
- Problemer med Bluetooth-forbindelse: Sørg for, at præamp is in pairing mode (flashing BT indicator). Ensure your mobile device's Bluetooth is on and within range. Try restarting both devices.
8. Specifikationer
| Feature | Specifikation |
|---|---|
| Materiale | ABS plast |
| Batteri | 1 x 2000mAh Rechargeable Lithium Battery (18650 type) |
| Dimensioner (L x B x H) | 90 mm x 50 mm x 45 mm (3.54 tommer x 1.97 tommer x 1.77 tommer) |
| Varens vægt | 207 g (7.30 oz) |
| Forbindelse | Bluetooth 5.0, Type-C Charging Port, AUX Input, Audio Input/Output |
| Effekter | Rumklang, Chorus, Delay |
| Pickup System | Dobbelt pickup (piezo og mikrofon) |


9. Brugertips
- Professionel installation: Due to the requirement of opening holes in your guitar, consider professional installation to ensure proper fit and function, and to avoid damage to your instrument.
- Mikrofon Ampliifikation: Remember that the microphone component of the dual-pickup system will only be fully effective when the preamp is connected to an external amplifier eller højttaler.
- Bluetooth for Practice: Utilize the Bluetooth 5.0 feature to connect your phone or tablet and play along with backing tracks, making practice sessions more engaging.
- Batterikontrol: If the unit doesn't power on, always check the battery first. The OS1 uses a standard 18650 rechargeable battery.
10. Garanti og support
For any questions, technical support, or warranty inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase. Specific warranty terms and conditions may vary and are typically provided at the point of sale or on the manufacturer's official webwebsted.





