1. Introduktion
The JOYO JTA-05 Sweet Baby is a 5-watt all-tube guitar amplifier designed to deliver classic, warm, and dynamic guitar tones. This amplifier features a pure Class A circuit, hand-wired construction, and tube rectification, providing a responsive and expressive playing experience. It is ideal for practice, recording, and small jam sessions where authentic tube tone is desired at manageable volumes.
Nøglefunktioner omfatter:
- 5-watt low-output Class A design.
- All-tube signal path with one 12AX7 preamp tube, one 6V6GT power tube, and one 5AR4 rectifier tube.
- Hand-wired circuitry for vintage tone and reliability.
- Equipped with a Celestion speaker for balanced sound reproduction.
- Responsive to guitar volume and tone controls for dynamic tonal shaping.
2. Sikkerhedsinstruktioner
Please read and understand these safety instructions before operating the ampBehold denne manual til senere brug.
- Høj voltage: Denne amplifier contains high voltage components. Do not attempt to open the chassis or service the unit yourself. Refer all servicing to qualified personnel.
- Strømkilde: Tilslut ampkun til den angivne strømforsyningsvolumentage indicated on the unit. Ensure the power cord is in good condition and properly grounded.
- Ventilation: Sørg for tilstrækkelig ventilation omkring amplifier. Do not block ventilation openings. Avoid placing the unit on carpets or in enclosed spaces that could restrict airflow.
- Varme: Vacuum tubes generate heat during operation. Keep the amplifier away from heat sources and direct sunlight. Allow sufficient cooling time before moving or storing the unit after use.
- Fugtighed: Udsæt ikke amplifier to rain, moisture, or excessive humidity. Keep liquids away from the unit.
- Fremmedobjekter: Do not insert any objects into the amplifier's openings.
- Rensning: Tag stikket ud af stikkontakten før rengøring. Brug en tør, blød klud. Brug ikke flydende rengøringsmidler eller rengøringsmidler på sprayform.
3. Pakkens indhold
Bekræft at alle varer er til stede i pakken:
- JOYO JTA-05 Sweet Baby All Tube Guitar Amplivligere
- Strømkabel
- Instruktionsmanual (dette dokument)
4. Produktet er slutview
The JOYO JTA-05 is a compact combo amplifier featuring a robust design and simple controls. Its all-tube circuitry provides a dynamic response and rich harmonic content.

Figur 4.1: Forside view of the JOYO JTA-05 Sweet Baby amplifer. Dette billede viser amplifier's black textured casing, silver grille cloth, and the JOYO logo badge.
4.1 Betjeningselementer og funktioner på frontpanelet

Figur 4.2: Nærbillede view af amplifier's front panel controls. Visible controls include the Power switch, Volume knob, and Input jacks.

Figur 4.3: Top-down view af amplifier's control panel, showing the Power switch, Volume knob, and Input jacks from above.
- Afbryderen: Skifter mellem amplifier on and off. Allow a brief warm-up period after turning on.
- Lydstyrkeknap: Styrer det overordnede udgangsniveau for amplifier. Turning this up will increase volume and introduce natural tube overdrive.
- Indgange: Two input jacks are typically provided, often with different sensitivities (e.g., high and low gain). Consult the specific unit for exact labeling.
4.2 Interne komponenter

Figur 4.4: Intern view af ampløfter, showcasing the vacuum tubes and the Celestion speaker. The 12AX7 preamp tube, 6V6GT power tube, and 5AR4 rectifier tube are visible.

Figur 4.5: En lukker view af amplifier's internal vacuum tubes and the Celestion speaker. This highlights the all-tube design and quality speaker component.
- 12AX7 Preamp Rør: Shapes the initial tone and gain.
- 6V6GT Power Tube: Tilbyder amplifier's output power and contributes significantly to its tonal character, especially when overdriven.
- 5AR4 Rectifier Tube: Delivers tube rectification, which contributes to the amplifier's vintage "sag" and dynamic response.
- Celestion Speaker: A high-quality speaker chosen for its tonal characteristics and ability to complement the amplifier's tube sound.
5. Opsætning
- Udpakning: Fjern forsigtigt amplifier from its packaging. Inspect for any signs of damage during transit.
- Placering: Placer amplifier on a stable, level surface. Ensure there is sufficient space around the unit for proper ventilation, especially at the rear and top where heat dissipates. Avoid placing it near other heat-generating equipment.
- Strømtilslutning: Sørg for amplifier's power switch is in the "OFF" position. Connect the supplied power cable to the ampstrømforsyningens AC-indgang og derefter til en jordet stikkontakt.
- Guitarforbindelse: Connect your guitar to one of the input jacks on the front panel using a high-quality instrument cable.
- Indledende indstillinger: Before powering on, set the Volume knob to its lowest setting.
6. Betjeningsvejledning
- Tænder: Flip the Power switch to the "ON" position. The indicator light will illuminate. Allow approximately 30-60 seconds for the tubes to warm up before playing.
- Justering af lydstyrke: Slowly increase the Volume knob to your desired listening level. The JTA-05 is designed to produce clean tones at lower volumes and natural tube overdrive as the volume is increased.
- Dynamic Tonal Control: Denne amplifier is highly responsive to your guitar's volume and tone controls.
- To achieve a clean tone when the amplifier's volume is set higher (where it might typically break up), roll down your guitar's volume knob.
- To return to an overdriven sound, simply roll your guitar's volume back up.
- Experiment with your guitar's tone controls to further shape the sound.
- Using Effects Pedals: The JTA-05 is designed to interact well with various effects pedals. Connect pedals between your guitar and the amplifier's input. Experiment with different pedal types (overdrive, distortion, modulation, delay) to find your preferred sound.
- Sluk: Before turning off, it is recommended to lower the Volume knob. Then, flip the Power switch to the "OFF" position.
7. Vedligeholdelse
- Rensning: Frakobl ampAfbryd strømmen til apparatet før rengøring. Brug en blød, tør klud til at tørre ydersiden af. Brug ikke slibende rengøringsmidler, opløsningsmidler eller voks.
- Udskiftning af rør: Vacuum tubes have a finite lifespan and will eventually need replacement. If you notice a decrease in performance, unusual noise, or a tube fails to glow, it may be time for replacement. Tube replacement should ideally be performed by a qualified technician due to high internal voltages. If replacing tubes yourself, ensure the amplifier is unplugged and allowed to cool completely. Handle tubes carefully, avoiding contact with the glass.
- Opbevaring: Når den ikke er i brug i længere perioder, skal den opbevares ampOpbevares tørt og temperaturkontrolleret, væk fra direkte sollys og ekstreme temperaturer.
8. Fejlfinding
If you encounter issues with your JTA-05 ampLifier, se følgende almindelige fejlfindingstrin:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lyd |
|
|
| Svag eller forvrænget lyd |
|
|
| Overdreven brummen eller støj |
|
|
If the problem persists after trying these steps, please contact JOYO customer support or a qualified service technician.
9. Specifikationer
| Feature | Detalje |
|---|---|
| Modelnavn | Søde baby Amp |
| Modelnummer | JTA-5 |
| Mærke | JOYO |
| Output Wattage | 5 watt |
| Preamp Rør | 1 x 12AX7 |
| Power Tube | 1 x 6V6GT |
| Ensretterrør | 1 x 5AR4 |
| Højttaler | Celestion (or equivalent high-quality speaker) |
| Kompatible enheder | Guitar |
| Produktdimensioner | 14.17 x 7.48 x 14.17 tommer |
10. Garanti og support
JOYO products are manufactured to high-quality standards. For information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official JOYO webwebsted.
For technical support, service inquiries, or replacement parts, please contact your authorized JOYO dealer or JOYO customer service directly. Contact information can typically be found on the official JOYO webwebsted eller i produktemballagen.
Please have your model number (JTA-5) and purchase date available when contacting support.





