SWEETFULL K4 User manual

K4 Professional Audio Console User Manual
K4
A Professional Audio Console
for
Live Stream, Record, and Karaoke

K4 Professional Audio Console User Manual
Dear customer,
Thank you for using our product.
In order to make it easier for you to operate the
product, we are glad to provide the detailed user
manual for you, from which you can obtain the
information about the product, including using
methods and other aspects.
Before you start to use this professional audio console,
please read this user manual carefully so that you can
use it correctly. If there are any questions, please do
not hesitate to contact us, and any advice will be
welcome.
Sincerely,
SWEETFULL

K4 Professional Audio Console User Manual
CONTENT
1. Overview........................................................1
2. Appearance....................................................1
3. Wiring & Panel...............................................2
3.1 Wiring Diagram....................................... 2
3.2 Panel Introduction.................................. 3
4. How to Use.....................................................5
5. Specification...................................................8
6. FAQ................................................................. 9
7. Items In the Box.............................................9

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1. Overview
The SWEETFULL K4 Professional Audio Console is a professional digital audio mixer
designed for recording and live streaming. It has the built-in high-performance digital
DSP reverberation processing function, which supports high-definition digital
recording, noise reduction, dual mobile phone live streaming, wireless
accompaniment, real-time headphone monitoring.
It provides various microphone inputs, different interesting voice changers, 12
professional electronic tones, popular live streaming atmosphere sound effects.
Suitable for professional live streaming & podcast studios, recording, chatting,
singing and so forth.
SWEETFULL K4 is a comprehensive solution for audio processing that integrates
audio input collecting, processing/optimizing, and output controlling, which can also
provide professional, realistic and interesting audio record. It is compatible with
Android, iOS, Window, Mac OS, and Linux. You can connect it to your smartphones,
tablets or computers in the plug-and-play way with no extra driver required.
The built-in DSP digital audio processor can tune your voice in real-time and improve
the timbre, making it possible for you to change your voice and add various funny
sound effects to your podcast or live streaming, which will make your live streaming
more entertaining.
2. Appearance

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3. Wiring & Panel
3.1 Wiring Diagram
①PC/Charging: DC+5V Input/OTG Port; Used for data transmission; Also used as a
computer live stream interface and computer accompaniment interface; The product
serves as an external sound console for the computer during live streaming,
recording or singing on the computer.
②Broadcast: The processed sound can be outputted to the smartphone, PC or any
other devices by connecting the audio console to devices via a 3.5mm TRRS cable. It
supports live-streaming on multiple platforms simultaneously. Can be connected to
the computer microphone jack or mobile phone headphone jack when live
streaming.
③Music: Music Accompaniment Jack; Connect an external audio source or device to
the audio console via an 3.5mm audio cable to play background music during live
streaming or audio composition. When playing accompaniment, it can be connected
to the phone headphone jack and computer headphone jack.
④Audio: 3.5mm Output/Speaker Jack; Connect to audio playback device such as
speakers and headphones.
⑤Earphone: 3.5mm Jack; Monitor headphone jack, used to monitor audio console in
real-time.

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⑥Headset: 3.5mm Jack; Can be connected to a earphone which has microphone.
ALSO used to monitor sound of audio console in real-time.
⑦Microphone: 3.5mm Jack; Connect a 3.5 mm condenser microphone that does not
require external power supply.
NOTE: Please do not charge the product during live streaming.
3.2 Panel Introduction
1. Power on/off: Press and hold for 2 seconds to power on/off; When powered on,
click the button to switch on/off the USB audio live broadcast function.
2. Music knob: Adjust the volume of the accompaniment music.
3. Record knob: Adjust the output volume of live stream and recording.
4. Scenario Mode: The indicator light will show the current chosen mode.
5. Anaphora button: Click to turn on, the human voice will be eliminated in the
accompaniment.
6. Pattern button: Click to choose from the 6 scenario modes: Original, KTV, MC,
Studio, Burst, and Streamer.
7. Electronic button: Click to activate the electronic tone, press and hold to turn off
the electronic tone, LCD display bar on the top indicates selected music scales.

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8. Dodge button/status light: When turned on, the product will automatically lower
the accompaniment sound when anybody is speaking, and automatically reinstate
the accompaniment after stopping talking. It is recommended to turn on the
"Dodge" function during the live stream.
9. Denoise button: Turn on/off the noise reduction function of the microphone, and
control the pickup range of the microphone.
10 - 12. Voice Changing Buttons: Children's, Uncle, Goddess; When turned on, the
indicator lights will also be on.
13. Atmosphere effects buttons area: 18 popular warm-up sound effects to choose.
14. Metaphone button: Special voice changing; Click to select voice modes cyclically
among radio, telephone, and robot.
15. Treble/Bass knob: Adjust microphone effect of treble and bass.
16. Microphone knob: Adjust the volume of the microphone.
17. Voice changing knob: Fine-tune the effect of the current voice changing mode.
18. BT light: The indicator light is always on to show a successful Bluetooth
connection. Please switch on the Bluetooth and find “V10 SoundCard” to connect.
(BT function is only used for BT accompaniment)
19. Reverb knob: Adjust reverberation effect.
20. Electronic tone mode light: 12 music scales of electronic tones.
21. Battery indicator light: Flashing green light means that the battery is low, while
constant green light means that the product has been fully charged; Red light will be
on when charging.
22. Monitor knob: Earphone/headset monitor and speaker volume adjustment.
23. Decrease the volume of the special effect: Click to play the "Debut" effect sound
Press and hold the "Debut" button to lower the volume of the special effects.
24. Increase the volume of special effects: Click to play the "Applause" effect sound.
Press and hold the "Applause" button to increase the volume of special effects.
25. Dynamic LED display: Respond to the corresponding knob. When being static, it
is the overall volume bounce display.

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4. How to Use
(1) Smartphone Live streaming + Headset Singing & Monitoring:
(2) PC Live stream + Microphone Singing + Earphone Monitoring

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(3) Smartphone Live stream + Smartphone Accompanying + Headset Singing &
Monitoring
(4) Special multi-line live stream equipment mode
Two Smartphone live stream + smartphone accompanying + Microphone Singing +
Speaker Monitoring

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(5) Separate earphone and microphone computer live broadcast mode, solve the
interface of part of the computer separated connection mode

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5. Specification
Basic parameters
Unit Size
L 225mm * W 140mm * H 40mm
Color
Metal Red / Piano Black / Ivory White
Product Weight
431g
Working Temperature
0°C ~ 45°C/32°F ~ 113°F
Battery
Lithium Ion 1000mAh/3.7V (3.7Wh)
Charging current
1A MAX
Charging voltage
DC+5V〓
Frequency response
50Hz ~ 18KHz
Reverberation processing
32Bit RISC Digital Reverberation Processor
Quantization of Sampling Rate
44.1KHz/16Bit
BT version/Name
V5.0; Compatible with Bluetooth 4.2BR1/V10 Audio Console
BT receive
<12 m（No Obstacle）
S/N Ratio
>102dB
Out power
10mW, Load 32Ω (Condenser Mic)
THD
< 0.3% @1kHz (Live Streaming)
Interface parameters
Headset Interface
US Standard 4 Pole/3 Rings
3.5mm Jack
Microphone Interface
US Standard 4 Pole/3
Rings 3.5mm Jack
Live Interface
US Standard 4 Pole/3 Rings
3.5mm Jack
Accompaniment
Interface
US Standard 4 Pole/3
Rings 3.5mm Jack
Headphone
Interface
US Standard 4 Pole/3 Rings
3.5mm Jack
USB Interface
5 feet Micro-USB

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6. FAQ
Q1: The device does not work, or there is no sound suddenly.
A1: The battery is low, please connect to USB to charge before use;
Q2: There is a lot of noise during the live streaming.
A2: a. Check whether the headset has been connected correctly. Try to
reconnect the headset again;
b. Check whether the earphone has been plugged correctly;
c. Appropriately lower the microphone volume;
d. Check whether the battery is low, please charge it when necessary;
e. Some laptops may interfere audio console, try to unplug the computer's
charging cable.
Q3: The microphone has no sound.
A3: a. Check the insertion position of the mic cable and make sure that the logo
is face to you;
b. The microphone sound is turned off to the minimum, then please monitor and
increase gradually the voice volume of mic.
Q4: The live streaming sound is quiet or silent.
A4: a. Check whether the cable is plugged into the Broadcast jack;
b. Check whether the mobile phone is connected in place;
c. Check the recording function of smartphone and see whether can broadcast
live again.
Q5: Others can't hear anything when live streaming via computer.
A5: a. Check whether the USB live cable has been plugged into the charging port,
please use the correct cable for this product;
b. Check whether the recording volume is adjusted to the maximum;
c. Check whether the "Internal-play" function is turned on.
Q6: The sound is abnormal.
A6: a. This device has a variety of tone-shifting effects, please reset to original
mode;
b.The earphone may be incorrectly plugged in the headset jack, please plug it in
place.
7. Items In the Box
A) K4 Audio Console * 1;

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B) 3.5mm Male to Male 4 Pole/3 Rings Audio Cable * 2;
C) USB A to Micro USB Data/Charging Cable * 1;
NOTE
• Please do not charge the audio console during live streaming.
• Please charge the audio console before using for the first time.
• If not used for a long period, please charge the podcast console every
3 months.
• Charging is also possible when the power is off.
• Do not charge for a long time. Please stop charging after being fully
charged to avoid over-charging.
• BT connection is limited by distance. Please do not be too far away
from the audio console.
• BT feature is only for accompaniment music playback.
• When live streaming via PC, you need to turn on the "Internal-play"
function. Only in this way can the viewers hear your voice and the

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sound from the your PC.
To avoid personal injury or property damage caused by noise, radiation,
fire, machinery, high temperature and other factors, please use this
product in a safe environment, and read the following tips carefully:
1. If you find smoke, odor, or the product is overheat, please cut the
power as soon as possible, and send it to the seller for maintenance.
2. Please do not modify, disassemble or repair this product by
yourself to avoid violating warranty policy or causing personal injury.
If necessary, please contact the seller.
3. This product should be used and stored in a dry, ventilated, and
safe environment. Do not use this product in a humid, dusty
environment.
4. Please prevent water and dust from entering the product to
avoid short circuit. Being too close to the fire, collision and severe
vibration will cause irreversible damage to the product.
5. Please do not use this product in the occasions that prohibited by
law, and follow the relevant safety regulations to use this product to
avoid any accidents.
6. This product cannot be used as a children's toy, please keep it
away from children.