1. Introduktion
Tak for købetasing the JOYO Badass Bass Mini Amp Head. This 50-watt hybrid tube amplifier head is designed specifically for bass guitar, offering a compact yet powerful solution for practice and performance. It features a 12AX7 preamp tube, built-in compressor, 3-band EQ, and Bluetooth connectivity. Please read this manual thoroughly to understand the product's features and ensure correct operation.

Image 1.1: The JOYO Badass Bass Mini Amp Head with its included footswitch.
2. Sikkerhedsinstruktioner
- Udsæt ikke denne enhed for regn eller fugt.
- Åbn ikke c'enasing. Der er ingen dele indeni, som kan serviceres af brugeren. Overlad al service til kvalificeret personale.
- Sørg for amplifier is connected to a speaker cabinet with an impedance of 4 ohms or higher. Connecting to a speaker with lower impedance can damage the unit.
- Brug kun den medfølgende strømadapter.
- Undgå at placere enheden i nærheden af varmekilder eller i direkte sollys.
- Opbevares utilgængeligt for børn.
3. Pakkens indhold
- JOYO Badass Bas Mini Amp Hoved
- Power Adapter (DC24V 3.0A)
- Fodskifte
- Footswitch Cable
- Brugervejledning (dette dokument)

Image 3.1: The JOYO Badass Bass Mini Amp Head connected to a bass guitar and speaker cabinet.
4. Produktet er slutview
4.1 Betjeningselementer på frontpanelet

Billede 4.1: Detaljeret view of the front panel controls.
- INPUT: 1/4-inch jack for connecting your bass guitar.
- BADASS / NORMAL Switch: Toggles between two distinct tonal characteristics.
- COMP Switch: Activates or deactivates the built-in compressor.
- CLIP-indikator: Lights up when the input signal is clipping. Adjust GAIN to prevent clipping.
- BLUETOOTH Switch: Activates Bluetooth for audio playback.
- LAV: Justerer basfrekvenserne.
- MID: Adjusts the midrange frequencies.
- Hej: Justerer diskantfrekvenserne.
- COMP knap: Adjusts the compression level when the COMP switch is engaged.
- GEVINST: Controls the input sensitivity and preamp køre.
- BIND: Styrer den overordnede udgangslydstyrke.
- Afbryderen: Drejer amplivligere til eller fra.
4.2 Bagpaneltilslutninger

Image 4.2: Rear panel connections including speaker outputs, footswitch, headphones, and FX Loop.
- DC24V 3.0A: Strømindgang til den medfølgende adapter.
- SPEAKER OUTPUTS (4Ω): Two 1/4-inch jacks for connecting to a speaker cabinet. Ensure the cabinet impedance is 4 ohms or higher.
- FODKONTAKT: 1/4-inch jack for connecting the external footswitch to control the compressor.
- TELEFON: 6.35mm (1/4-inch) stereo headphone output for silent practice.
- FX LOOP (RETURN/SEND): 1/4-inch jacks for connecting external effects pedals. Connect the output of your effects to RETURN and the input of your effects to SEND.
5. Opsætning
5.1 Første tilslutning
- Tilslut din basguitar til INPUT stik på frontpanelet.
- Tilslut amplifier's HØJTTALERS UDGANG to a speaker cabinet using a speaker cable. Ensure the speaker cabinet has an impedance of 4 ohms or higher.
- Tilslut fodkontakten til FODKONTAKT jack on the rear panel using the provided cable.
- Tilslut strømadapteren til DC24V 3.0A input on the rear panel, then plug it into a power outlet.
- Tænd for amplifier ved hjælp af MAGT skifte.

Image 5.1: Connection diagram for the rear panel.
5.2 Bluetooth-forbindelse
- Tryk på BLUETOOTH switch on the front panel to activate Bluetooth mode. The indicator light will flash.
- On your mobile device (phone, tablet, etc.), open the Bluetooth settings and search for available devices.
- Select "BADASS" from the list of devices to pair. The indicator light on the amp will become solid when connected.
- Du kan nu afspille lyd fra din enhed via amplifier for backing tracks or music playback.

Image 5.2: Bluetooth pairing process.
6. Betjening
6.1 Tone Shaping
- GEVINST: Adjust this knob to control the input level and the amount of preamp drive. Higher settings will introduce more saturation. Monitor the CLIP indicator to avoid excessive clipping.
- EQ (LOW, MID, HI): Use these three knobs to sculpt your bass tone. Adjust LOW for bass frequencies, MID for midrange presence, and HI for treble clarity.
- BADASS / NORMAL Switch: Experiment with this switch to find your preferred fundamental tone. The "BADASS" mode offers a more aggressive and punchy sound, while "NORMAL" provides a cleaner, more traditional bass tone.
6.2 Kompression
- Engage the built-in compressor by pressing the COMP kontakten. Indikatorlampen lyser.
- Juster COMP knob to control the amount of compression applied to your signal. Higher settings will result in more dynamic range reduction and sustain.
- The external footswitch can also be used to toggle the compressor on/off during live performance or practice.

Image 6.1: The footswitch allows for convenient control of the compressor.
6.3 Brug af hovedtelefoner
For silent practice, connect your headphones to the TELEFON jack on the rear panel. The speaker output will be muted automatically when headphones are connected.

Image 6.2: Using the headphone output for private practice.
6.4 FX Loop
The FX LOOP allows you to integrate external effects pedals into your signal chain after the preamp section. Connect the SEND jack to the input of your effects pedal(s) and the output of your effects pedal(s) to the RETURN jack.
7. Vedligeholdelse
- Rensning: Brug en blød, tør klud til at rengøre ydersiden af ampBrug ikke slibende rengøringsmidler eller opløsningsmidler.
- Opbevaring: Opbevar ampOpbevar køleren på et tørt, køligt sted væk fra direkte sollys og ekstreme temperaturer.
- Udskiftning af rør: The 12AX7 preamp tube is designed for long life. If you experience a significant change in tone or performance, consult a qualified technician for tube inspection or replacement.
8. Fejlfinding
- Ingen lyd:
- Sørg for, at strømadapteren er korrekt tilsluttet, og at enheden er tændt.
- Check all cable connections (bass, speaker, power).
- Verify the speaker cabinet is connected to the correct output and has an impedance of 4 ohms or higher.
- Adjust the VOL knob.
- If headphones are connected, disconnect them to enable speaker output.
- Forvrænget lyd:
- Reduce the GAIN knob if the CLIP indicator is frequently lighting up.
- Check your bass guitar's output level.
- Ensure speaker impedance is correct (4 ohms or higher).
- Bluetooth forbinder ikke:
- Ensure the BLUETOOTH switch is engaged and flashing.
- Sørg for at amplifier is not already paired with another device.
- Try restarting the amplifier and your mobile device.
9. Specifikationer
| Feature | Specifikation |
|---|---|
| Output Wattage | 50 watt |
| Preamp Rør | 1 x 12AX7 |
| Højttalerudgangsimpedans | 4Ω or higher |
| Kontrolelementer | BADASS/NORMAL Switch, COMP Switch, LOW, MID, HI, COMP, GAIN, VOL |
| Forbindelse | Input (1/4"), Speaker Outputs (1/4"), Footswitch (1/4"), Phones (6.35mm), FX Loop (Send/Return 1/4"), Bluetooth |
| Strømindgang | DC24V 3.0A |
| Dimensioner | 6.42 x 5.51 x 4.33 tommer (16.3 x 14 x 11 cm) |
| Vægt | 5.06 pund (2.3 kg) |
| Materiale | Metal |

Billede 9.1: Produktmål.
10. Officiel produktvideo
Video 10.1: An official product video demonstrating the features and sound of the JOYO Badass 50 Watt Mini Bass Guitar Tube Amplifier Head.
11. Garanti og support
JOYO products are designed for reliability and performance. For warranty information, please refer to the warranty card included with your product or visit the official JOYO website. If you encounter any issues or require technical assistance, please contact JOYO customer support through your purchase platform or the official JOYO website. When contacting support, please provide your product model number (Manufacturer-JOYO-BTP-BADAS) and a detailed description of the issue.





