Description
![](//ae01.alicdn.com/kf/S0ee73ef444654a6a8b283f7cedf6bf48g.jpg?width=1000&height=1000&hash=2000)
ZK-R302:
Product selling point:
1: High-end audio experience
2: Protection mechanism: over temperature, over current, short circuit, anti-static protection
3: Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
4: Power amplifier chip: TPA3118
5: Multi-function knob, 360-degree stepless tuning, with volume level indication.
Parameter:
Model: ZK-R302
Name: 2.0 channel 30WX2 stereo with high and low bass adjustment Bluetooth audio power amplifier
Power amplifier chip: TPA3118
Bluetooth version: 5.1
Audio input: Bluetooth+AUX+U disk+USB sound card
Audio output: left channel 30W + right channel 30W
Adapter power supply: DC9-24V, ≥3A (can not be connected to AC)
Adapter speaker: 10-50W, 4-8Ω
Volume adjustment: multi-function knob, 360-degree stepless tuning, with volume level indication.
Click: Play/Pause
Double click: mode switch (Bluetooth/U disk/AUX)
Press and hold for 1 second: turn on/off
Rotation: adjust the volume
Protection mechanism: over temperature, over current, short circuit, anti-static protection
Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Product size: 81x81x34mm
Product weight: net weight 77g, including packaging 126g
Package Included:
1* ZK-R302 cool volume indicator bluetooth audio power amplifier board module
![](//ae01.alicdn.com/kf/S7648d13d8322445f9761cd2657e18a5eX.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S5f4c80d855244df88fa28032aa017e6er.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S1f2b20c65890487881f0a373fed387edU.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S29f645806ed94845a5355713fa9dbc85u.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S3b163e6c2857463e8d14eb2d807c92dbB.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S645a0afd03e241399a984e363e409b073.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Sbfbe0e8dd8024619beba6add514583f4s.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S0364193b6b5f46fba14a8a2c385873c0W.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Scc453f3bb55f4e518f537ae4b9d3906dI.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S9c15eda53cc74e7894af9109df54db6fj.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S26c05a921c094d128123833fd60472c0i.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Sbe1982f98d03403fa124a4b1f1a6ffa00.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S6c3b3380aca84873b7fbca5f4e94efc1t.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S73a49bfa9385449d9729234e216247b0t.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Sf4dac0e575ea48a09658d225514e1c5cc.jpg?width=1000&height=1000&hash=2000)
ZK-R502H:
Product selling point:
1: With treble and bass adjustment
2: High-end audio experience
3: Cool indicator light
4: Protection mechanism: over temperature, over current, short circuit, anti-static protection
5: Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Parameter:
Model: ZK-R502H
Name: 2.0 channel 50WX2 stereo with high and low bass adjustment Bluetooth audio power amplifier
Power amplifier chip: TPA3116D2
Bluetooth version: 5.1
Audio input: Bluetooth+AUX+U disk+USB sound card
Audio output: left channel 50W + right channel 50W
Adapter power supply: DC9-24V, ≥3A (can not be connected to AC)
Adapter speaker: 10-50W, 4-8Ω
Volume adjustment: multi-function knob, 360-degree stepless tuning, with volume level indication.
Click: Play/Pause
Double click: mode switch (Bluetooth U disk/AUX)
Press and hold for 1 second: turn on/off
Rotate: adjust the volume
Protection mechanism: over temperature, over current, short circuit, anti-static protection
Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Product size: 81x81x34mm
Product weight: net weight 81g, including packaging 130g
Package Included:
1* ZK-R502H cool volume indicator bluetooth audio power amplifier board module TPA3116 high and low bass adjustment 50WX2
![](//ae01.alicdn.com/kf/Sb4ad703936b64add8673b236c940826f2.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Scdb2f23ecba2460cb85685c2f6b766c3Z.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S21623fb3a92b478882ae94f8468ba0d12.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Sd35da83b5aed4cc98ec7d8ca36e1e8f4u.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Scd6f18eb08864d4dbd4b93e65a394a37c.jpg?width=1000&height=1000&hash=2000)
ZK-R502E:
Product selling point:
1: Bluetooth audio amplifier with high and low bass adjustment
2: HD sound quality
3: Cool indicator light
4: High-end audio experience
5: Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Parameter:
Model: ZK-R502E
Name: 2.0 channel 50WX2 stereo with high and low bass adjustment Bluetooth audio power amplifier
Power amplifier chip: domestic chip
Bluetooth version: 5.1
Audio input: Bluetooth+AUX+U disk+USB sound card
Audio output: left channel 50W + right channel 50W
Adapter power supply: DC9-24V, ≥3A (can not be connected to AC)
Adapter speaker: 10-50W, 4-8Ω
Volume adjustment: multi-function knob, 360-degree stepless tuning, with volume level indication.
Click: Play/Pause
Double click: mode switch (Bluetooth/U disk/AUX)
Press and hold for 1 second: turn on/off
Rotate: adjust the volume
Protection mechanism: over temperature, over current, short circuit, anti-static protection
Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Product size: 81x81x34mm
Product weight: net weight 78g, including packaging 127g
Package Included:
1* ZK-R502E cool volume indicator bluetooth audio power amplifier board module
![](//ae01.alicdn.com/kf/S9e08714b5c9346d386763fbd83bb0dd56.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S7d0463c331ea46a5a1a04893419294e3F.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S991cb396292c451287b05ae4822d96c9A.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Scb768e023aa84b92b1f5fc58e8e5d8d04.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S90aaab39bbb44af1a543752868144b3ff.jpg?width=1000&height=1000&hash=2000)
ZK-R21H:
Product selling point:
1: 2.1 channel bluetooth audio amplifier
2: 50W+50W+100W subwoofer
3: High-end audio experience
4: Power amplifier chip: TPA3116D2
5: Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Parameter:
Model: ZK-R21H
Name: 2.1 channel 50W+50W+100W subwoofer stereo bluetooth audio power amplifier
Power amplifier chip: TPA3116D2
Bluetooth version: 5.1
Audio input: Bluetooth+AUX+U disk+USB sound card
Audio output: left channel 50W + right channel 50W + subwoofer 100W
Adapter power supply: DC9-24V, ≥7A (can not be connected to AC)
Adapter speakers: left and right channels 15-50W, 4-8Ω; subwoofer 30-100W, 4-8Ω Volume adjustment: multi-function knob, 360-degree stepless tuning, with volume level indication.
Click: Play/Pause
Double click: mode switch (Bluetooth/U disk/AUX)
Press and hold for 1 second: turn on/off
Rotate: adjust the volume
Protection mechanism: over temperature, over current, short circuit, anti-static protection
Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Product size: 81x81x37mm
Product weight: net weight 106g, including packaging 150g
Package Included:
1* ZK-R21H cool volume indicator Bluetooth power amplifier board module 2.1 channel subwoofer TPA3116 50WX2+100W
![](//ae01.alicdn.com/kf/Sb1d0729295c7414f9d7dda6d4a02d19cl.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S72cd4b6176e34456a3d9c1445a0909a9D.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Sb3b02ce6cbbc4f3693ab41c99993cdb9t.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S6659e6d144f54ab4882e1e7f19b75a605.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S30e84653e0424ec8b030a50ee21aabb9Q.jpg?width=1000&height=1000&hash=2000)
ZK-R21E:
Product selling point:
1: 2.1 channel bluetooth audio amplifier
2: 50W+50W+100W subwoofer
3: Protection mechanism: over temperature, over current, short circuit, anti-static protection
4: Features: Support wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
5: Cool indicator with high-definition sound quality
Parameter:
Model: ZK-R21E
Name: 2.1 channel 50W+50W+100W subwoofer stereo bluetooth audio power amplifier
Power amplifier chip: domestic chip
Bluetooth version: 5.1
Audio input: Bluetooth+AUX+U disk+USB sound card
Audio output: left channel 50W + right channel 50W + subwoofer 100W
Adapter power supply: DC9-24V, ≥7A (can not be connected to AC)
Adapter speakers: left and right channels 15-50W, 4-8Ω; subwoofer 30-100W, 4-8Ω
Volume adjustment: multi-function knob, 360-degree stepless tuning, with volume level indication.
Click: Play/Pause
Double click: mode switch (Bluetooth/U disk/AUX)
Press and hold for 1 second: turn on/off
Rotate: adjust the volume
Protection mechanism: over temperature, over current, short circuit, anti-static protection
Features: Support Wuzhi Audio APP. Modify the bluetooth name, password settings, prompts
Sound volume adjustment, on/off prompt sound, sleep aid, sound effect selection + custom sound effect, U disk playlist, volume indicator brightness adjustment.
Product size: 81x81x37mm
Product weight: net weight 85g, including packaging 129g
Package Included:
1* ZK-R21E cool volume indicator Bluetooth audio power amplifier board module 2.1 channel subwoofer 50WX2+100W
![](//ae01.alicdn.com/kf/S928b5894c4d044f1955dcdee3e832a097.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Scdaee54f8cd74637903b405d4faa2ab4o.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S2932124a5c7a4784b43f00d688fdcda3A.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Sf90b74d35bdb4e44902065f185ca0357L.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S648dd991fd19433085c24e7f849813e5t.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/S593c3b2dd4d141528f3e56b969a47ffep.jpg?width=1000&height=1000&hash=2000)
![](//ae01.alicdn.com/kf/Hfe881ce2e73241168ebecf90896ff3cfE.jpg?width=960&height=1600&hash=2560)
Specification
Versorgungsmaterial-Spannung : Bluetooth Audio Power Amplifier Board
Art : der Regulierungssteller
Ableitungs-Energie : 30W*2
Betriebstemperatur : Power Amplifier Board