PROZOR DAC137 Hi-Fi Headphone Amplifier with Bluetooth 5.0 Receiver User Manual
- June 14, 2024
- PROZOR
Table of Contents
Model: DAC137
USER MANUAL
HiFi Headphone Amplifier
+ Bluetooth 5.0 Receiver
Diagram of Interfaces
Note:
-
LED nicator get s rod when he proact s charging, and will um green when the battery i fully charged. 2.fthe headphones impedance is more than 64 ohms, GAIN s set 15 the H posit; if te headphone impedance isles han 64 ohms, the GAIN s set o the L position.
About Bluetooth input option
When the Bluetooth connection s successful, the amplifier will output Bluetooth signal audio by default Afar plugged into 3.5mm audio input interface, and it will automatically Swich to 3 5mm audio input. 1.Tum on the amplifier by the Power Volume knob, and the B indicator will agemates banking bee per 1 second (Once connected, he Bluetooth LED indicator will stop fishing, maintain the blue ight -
Enable the Bluetooth feature on your device, and pair this new device when you initial connect it.
-
Select your audio converter devices ‘““ PROZOR RX5.0 ” from the device list.
Note: If you want to select Bluetooth connection, please must unplug from
3.5mm audio input interface. Because when plugged into 3.5mm audio input
interface, and headphone amplifier will automatically switch to 3.5mm audio
input.
Link diagram:
Bluetooth distance 16-26 (5-8m)
3.5mm audio cable connection
Operation:
Step1: Make sure to turn the VOL knob to the minimum.
Step2: Connect the input with audio source.
Step3: Connect the output with headphone.
Step4: Turn the knob clockwise to turn on the power.
Step5: Wear the headphone and adjust the volume.
Specification
Lithium battery capacity: 1500mAH
Amp using time: more than 8 hours
Bluetooth decoding mode: SBC, AAC
Bluetooth protocol: A2DP V1.3.1, AVRCP V1.6 ,HFP V1.7, HSP V1.2
Bluetooth distance: 8m Max
Amp battery voltage: DC3.7V – 4V
Amp internal working voltage: +4V
SNR>100Db
THD+N 0.0003%
Adapted Headphone Impedance: 16-1500
Dimension: 96 x 61 x 15mm(L x W x H)
Power Output:
FAQ
Q: It is turned to the maximum, but the volume is still not loud enough. What should I do?
A: Our product is designed with a gain switch which can be set to H position if the sound is not loud enough.
Q: My headphone impedance is 640. It can work?
A: According to our design theory, the product can support a headphone with 16
- 150 O impedance. Therefore that is completely OK. Q: Does USB have a decoding function? A: USB of this product only has a charge function, does not have OTG decoding function. You can purchase the related products of our company if you need an encoding function.
Q: Can the Bluetooth support APT-X and APT-X LL?
A: It can support SBC and AAC , but couldn't support APT-X, APT-X LL or APT-X HD.
Q: All cables are connected, but there is no audio output?
A: 1. Please check the power indicator is on, if not, turn the potentiometer on. 2. If the power indicator light up, check that the VOL knob is in the smallest state, if it is, and it is normal to rotate clockwise in the minimum state. 3. If both of the above are normal, check whether the audio source playback device is paused, muted, or the volume is minimal.
Q: The device can work, but the intensity of music is not well?
A: The battery output is not enough and needs to be charged.
Q: Why the headphone has a big buzzing sound when the input cable is connected but the sound is not play?
A: 1. It is not recommended to use it when charging, because current interference and noise may be generated during the charging process. 2.Check whether the connection between the audio cable and the amp interface is normal.
Q: Bluetooth cannot connect?
A: Please unplug the 3.5mm audio input interface of headphone amplifier.
Warranty
Thanks for using PROZOR product, all PROZOR product comes with warranty of 18
months from the day of purchase, if you need any support, please feel free to
contact us.
Contact
Email: prozorservice@outlook.com
Made in China
Documents / Resources
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PROZOR DAC137 Hi-Fi Headphone Amplifier with Bluetooth 5.0
Receiver
[pdf] User Manual
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DAC137
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