1. Introduzzjoni
The Double OS1 Resonance Pickup On-Board Preamp is an innovative guitar preamplifier system designed to enhance acoustic guitar sound. It features a unique Same Frequency Trans (SFT) transmission device that drives the guitar body to resonate, producing a more resonant, solid, and dynamic sound even without an external amplifier. This system integrates a dual-pickup setup, combining a piezo pickup and a microphone, to capture every detail of your playing. It also includes built-in reverb, chorus, and delay effects, along with Bluetooth connectivity for accompaniment.
2. Kontenut tal-Pakkett
Jekk jogħġbok ivverifika li l-komponenti kollha huma preżenti fil-pakkett:
- 1 x Pickup Unit
- 1 x End-Pin Jack
- 1 x Vibrating Horn
- 1 x Pickup Wire
- 1 x Cable tat-Tip-Ċ
- 2 x Klipps

Figure 2.1: Included components of the Double OS1 Resonance Pickup system. Note that the pickup wire and vibrating horn may vary in appearance (random delivery).
3. Installation (Requires Opening Holes)
This is an on-board preamplifier system that requires permanent installation into your guitar. This process involves opening holes in the guitar body to accommodate the pickup unit and end-pin jack. Professional installation by a qualified luthier or guitar technician is highly recommended to prevent damage to your instrument.
The main unit is designed to be mounted on the side of the guitar, providing easy access to controls. The end-pin jack replaces the existing end-pin, serving as both a strap button and an output for connecting to an amplifier jew sistema PA.

Figure 3.1: The preamp unit installed on a guitar, demonstrating its on-board nature and the necessity for guitar modification.

Figure 3.2: The preamp unit seamlessly integrated into the guitar body.
4. Istruzzjonijiet Operattivi
4.1. Tixgħel / Mitfi u Iċċarġjar
Il-preamp is equipped with a 2000mAh rechargeable Li-ion battery. To charge the unit, connect the provided Type-C cable to the Type-C interface on the preamp and a suitable USB power source. The charging rate is increased by 50% for faster charging.

Figure 4.1: Charging the preamp via the Type-C port.
4.2. Kontrolli u Funzjonijiet
The main control dial and surrounding buttons allow for easy adjustment of various parameters:

Figura 4.2: Aktarview tal-preamp kontrolli.
- Kontrollur: Main rotary dial for adjusting volume and navigating settings.
- Dial LED Lamp / Indicator: Provides visual feedback on settings and battery status.
- Interface tat-Tip C: Użat għall-iċċarġjar tal-batterija interna.
- BT (Bluetooth): Activates Bluetooth 5.0 connectivity for pairing with external devices (e.g., smartphone) to play background music or accompaniment.
- AUX: Likely an auxiliary input or function related to external audio.
- Reverb: Controls the reverb effect, adding spatial depth to the guitar sound.
- Kor: Controls the chorus effect, creating a thicker, modulated sound.
- Dewmien: Controls the delay effect, producing echoes of the guitar sound.
- Mic: Adjusts the level or activates the internal microphone pickup.
4.3. SFT (Same Frequency Trans) Technology
The SFT system utilizes a transmission device to vibrate the guitar body, enhancing its natural resonance. This feature allows the guitar to produce a louder, more vibrant sound without requiring an external amplifier. The system picks up the guitar's sound and uses the transmission device to drive the guitar body, increasing its frequency response and making the sound more resonant, solid, and dynamic.
4.4. Dual-Pickup System
Il-preamp incorporates a dual-pickup system consisting of a piezo pickup and a microphone. This combination ensures that every nuance of your playing is captured, adding richness and dynamics to the guitar's amplified sound. The microphone component requires connection to a speaker system to be effective.
4.5. Digital Signal Processing (DSP)
The system features advanced scientific circuit design with DSP (Digital Signal Processing) for enhanced acoustic dynamics and digital gain output. This ensures high-quality sound processing for the integrated effects and overall output.

Figure 4.3: Internal components and advanced circuit design.

Figure 4.4: Key features including Bluetooth, accompaniment, and DSP vibration effects.
5. Manutenzjoni u Kura
- Żomm l-unità nadifa billi timsaħha b'ċarruta ratba u niexfa. Evita li tuża prodotti tat-tindif jew solventi li joborxu.
- Ipproteġi l-unità minn temperaturi estremi, umdità, u dawl tax-xemx dirett.
- Evita li twaqqa’ l-unità jew li tissottomettiha għal impatti qawwija.
- Ensure the Type-C charging port is free of dust and debris.
- If the unit will not be used for an extended period, charge the battery periodically to maintain its health.
6 Issolvi l-problemi
- Ebda Ħsejjes tal-Ħsejjes:
- Ensure the unit is powered on and sufficiently charged.
- Check all cable connections, including the end-pin jack to your ampsistema ta' lififier/PA.
- Verify that the volume on the preamp u tiegħek amplifier huwa mdawwar up.
- If using the microphone pickup, ensure it is connected to a speaker system for effectiveness.
- Kwistjonijiet ta' Konnessjoni Bluetooth:
- Ensure the preamp's Bluetooth function is activated.
- Kun żgur li l-Bluetooth tat-tagħmir estern tiegħek huwa mixgħul u jista' jiġi skopert.
- Mexxi l-apparati eqreb lejn xulxin biex tiżgura li jkunu fil-firxa tagħhom.
- Ipprova neħħi l-akkoppjar u erġa' qabbad l-apparati.
- Effetti Mhux Jaħdmu:
- Check the effect level controls (Reverb, Chorus, Delay) on the preamp.
- Ensure the unit is properly installed and receiving signal from the guitar.
- Batterija Mhux Iċċarġja:
- Verify the Type-C cable is securely connected to both the preamp u s-sors tal-enerġija.
- Ipprova kejbil jew adapter tal-enerġija tat-Tip Ċ differenti.
- Kun żgur li s-sors tal-enerġija jaħdem.
7. Speċifikazzjonijiet
| Karatteristika | Speċifikazzjoni |
|---|---|
| Materjal | ABS |
| Batterija | 1 x 2000mAh rechargeable Li-ion battery |
| Item Size (Preamp Unità) | 90 * 50 * 45mm / 3.54 * 1.97 * 1.77in |
| Item Weight (Preamp Unità) | 207g / 7.30oz |
| Piż tal-Pakkett | 357g / 12.59oz |
| Daqs tal-Pakkett | 17.5 * 12 * 6cm / 6.89 * 4.7 * 2.36in |
| Konnettività | Bluetooth 5.0, Tip-Ċ (iċċarġjar) |
| Effetti | Reverb, Chorus, Delay |
| Sistema Pickup | Dual-pickup (Piezo and Microphone) |
| Karatteristiċi Speċjali | SFT (Same Frequency Trans) technology, DSP |

Figure 7.1: Dimensions of the preamp unità.
8. Garanzija u Appoġġ
Specific warranty information for this product is not provided in the available documentation. For any warranty claims, technical support, or service inquiries, please contact the seller or manufacturer directly through your purchase platform. Retain your proof of purchase for any support requests.