Sizhu Wireless System

ISOLO Sizhu | Quick Start Guide

Operating questions

Feedback issue when playing on amp/speaker

Feedback is caused by the sound being loop between the mic and speaker. If you ever experience the feedback issue. You can try the below:

Step 1: move the mic away from the amp/speaker, do not let the mic directly facing the amp/speaker

Step 2: switch the gain on the mic transmitter to a lower level

Step 3: adjust the volume on the amp/speaker

Step 4: adjust the EQ setting to avoid the feedback frequency

Step 5: reduce the effect level

Experiencing signal drop/disconnect

See this FAQ for more details.

Output the sound source to Left/Right channel

If you would like to output the sound source to Left & Right channel on your home speaker. You will NEED to use the provided adapter.

ISOLO device / AR1 connecting to camera device

  1. ISOLO connecting to camera device
Use the provided adapter from ISOLO and connect a 3.5mm audio cable to the camera device.

  2. AR1 recorder connecting to camera device
Connect AR1 to the ISOLO output, and connect the 3.5mm audio cable to the camera device.

Experiencing hiss sound

Hiss sound reason:

In most cases hiss sound is caused by the sharing ground power between amp/speaker with the ISOLO receiver


Separate the power between amp/speaker. Power the ISOLO receiver by power bank (portable charger)


Tips to extend microphone battery life

Cloudvocal will recommend to charge the microphone before it runs out of 
power. The battery is designed to retain up to 80% of its original capacity at 300 complete charge cycles. The one-year warranty include service coverage for a defective battery. If it is out of warranty, we offers a battery service. Prices and terms may vary.

The indicator on receiver

The indicator on the receiver will reflects the power of mic transmitter.

  • Blue: power > 80%

  • Green: power 80% - 10%

  • Red: power < 10%

Can I connect the ISOLO to another brand’s mixer?

Yes, ISOLO can be connected to third party mixer & effects.

Can I use Bluetooth headphone/monitor?

No, Cloudvocal will not recommend another wireless device (including Bluetooth headphone/monitor) to be used along with ISOLO device. Because there will be interference and latency issue. A wired headphone/monitor will be recommended. Cloudvocal also offers our own: <EC – 5 Noise Isolating Earphones>

Can I use headphones to monitor?

The output signal of the product was designed for instrument AMP and Mixer. Directly connect a headphone to the device may cause the issue of unbalanced sound, decline of sound quality heard. Please output the ISOLO signal to an audio interface or a mixer and connect the headphone to them (interface & Mixer) for monitoring purpose.

Is there recording function on ISOLO system?

All ISOLO systems were designed for performing purpose. If you would like 
to record with ISOLO. Cloudvocal has our own <AR1 Key Chain Recorder>

How can I play the background music?

For Android devices any 3.5 mm cable will do. IOS device user, a 3.5mm to lighting adaptor is needed.

Can one receiver be paired with multiple transmitter?

One transmitter can only be paired with one receiver at a time.

Can one ISOLO system be used on different instrument?

Every instrument has their unique sound and specific tone. Therefore, during the design phase. Cloudvocal implemented the appropriate elements, from mic capsule, mounting to the inner audio chip to reach the best solution for the dedicated instrument.
Which, we will recommend to get the dedicated ISOLO system for the instrument that you played.