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100W 70V/100V Constant Voltage Power Amplifier for Distributed Speaker System Released

CVA-1100 is a 100W constant power amplifier board consisting of a power unit and an amplifier unit, designed for distributed speaker systems like background music system, alarm system, broadcast system and so on. It can continuously output 70V/100V RMS directly with no need of an output transformer, which means you can connect the output directly to the distributed speakers with transformers. Besides the default constant voltage mode, CVA-1100 can function as a constant resistance amplifier board, driving an 8Ohm speaker for local audio playback. CVA-1100 features high reliability and stability, guaranteed by equipped full protection circuit, perfectly applicable to high demanding commercial and industrial applications.


Transformer-less 70V/100V RMS Output

Supporting Both Constant Voltage and Constant Resistance Mode

Wide Power Supply Range as 90VAC-254VAC

Two Levels Gain Adjustable

CVA-1100 100Watt 70V/100V RMS Power Amplifier for Distributed Speaker Systems



KAB6 4CH 15W TPA3110 Audio Amplifier Board for Game Machine Released

We have recently released a new member of KAB series – KAB6-415, a 4CH audio amplifier board specially designed for game machine applications. It is developed based on TI TPA3110 amp IC, delivering 15W output power per channel into an 8Ohm load. It features compact size, full protection and high reliability, applying to audio 4.0 system. Thanks to easy installation, KAB6-415 can be integrated into most projects simply. Industrial pluggable terminal blocks make it easy to be integrated in systems. KAB6-415 supports being configured as 2.1 mode or 2.0 mode, greatly improving the flexibility of the whole audio system.

Keeping the requirements on high reliability in commercial and industrial applications, we equipped KAB6-415 with full protection circuit to ensure it can work stably for long time. We have carried out extremely strict test for this board to ensure its reliability and stability. In addition to functional test and performance test, all boards go through HALT and HASS test before storage. If you are interested, please contact us.

4 x 15W 4Ohm Class D Audio Amplifier Board for Game Machine and Kiosk



Highly Cost-Effective Full Range / Subwoofer Speakers Released

To provide our customers with full set of audio solutions, we have recently launched many speakers with high build quality, ranging from 1.5’’ 4W to 8’’ 80W. You can definitely find a model of speaker you are looking for. SUFR speakers are full range speakers with wide effective frequency range, which are specially optimized for voice band and can provide clean and elegant audio playback. SUPB speakers are all fitted in an ultra-compact plastic box with the built-in rubber mounts for vibration damping upon the panel mounting, which offers powerful sound regardless of its small size. All the speakers are designed to be easy for installation, suitable for kiosk, game machine, ATM, guide machine, self-service robots, gate machine and home audio DIY applications.

Please kindly refer to the attached pictures for more information.

2" Neodymium Powered 5Watt 4Ohm Plastic Box Speaker Unit (SUPB5005)

2.5" Ferrite Powered 25Watt 4Ohm Full Range Speaker Unit (SUFR6325)



In-Circuit Programmer with USB UART for PC UI Control and BLE for APP Control - ICP5 Relea

WONDOM ICP5 is a new member of WONDOM ICP series, integrated with USB UART for PC UI Control & Bluetooth BLE for APP Control. It is designed to help customers, even those who are not familiar with SigmaStudio, to get a simple and quick start of remote control and simple programming like EQ for their audio systems.

ICP5 is a multiple purpose programming board for use with WONDOM products integrated with DSP, providing various functions as programming with SigmaStudio, APP control and PC UI control. In addition, ICP5 supports online Firmware Upgrade by yourselves for future use with more products. Owing to the equipped auto-identification system, ICP5 can recognize the target products automatically once they are connected.

In-circuit Programmer with UART for PC UI Control & BLE for APP Control - ICP5



4CH 30W Audio Amplifier Board with Bluetooth & ADAU1701 DSP - JAB4

Sure Electronics has released JAB4 recently, which is a 4-channel amplifier board, delivering 30W into an 8Ohm load based on TI’s TPA3118 chip. JAB4 is integrated with Bluetooth V5.0 module, supporting wireless audio connection and various audio format decode, such as aptX, aptX HD, aptX LL, SBC and AAC. Thanks to the equipped ADAU1701 DSP, JAB4 supports multiple control methods for audio processing. Four external potentiometers are provided for simple gain and frequency adjustment. After connection with WONDOM ICP programmer, you can write programs in SigmaStudio or control the audio system via PC UI with more effects.

JAB4 supports PBTL configuration, therefore, in addition to 4.0 (4 x 30W) mode, JAB4 can work as 2.1 mode (2 x 30W + 1 x 60W), and 2.0 mode (2 x 60W). Besides speaker output, JAB4 offers an I2S signal output, which can be transmitted to an I2S audio amplifier board to build a 4.2 / 6.0 audio system. You can get multiple systems for various applications by purchasing one product!

JAB4 features high quality audio performance, high efficiency, high flexibility and expandability, perfectly suitable for DIY applications, Home audio, Hotel audio, Desktop audio, Garden audio and demanding industrial audio applications.

JAB4 - 4 x 30 Watt Class D Audio Amplifier Board w ADAU1701 DSP & Bluetooth Ver5.0 for Audio 4.0/2.1/2.0 System



Waterproof Cabinet Released for DIY Outdoor Applications

WONDOM JAB series is integrated with Bluetooth module for wireless audio connection, and DSP module for easy and remote control, widely applicable in Audio DIY applications, like bookshelf speakers, portable speakers, garden audio, etc.

Have you ever encountered this situation? You want to install your audio system outdoor, such as in the garden or on the porch wall. But you have to give up because of the restriction of weather or dust. You are afraid that the audio system would be damaged due to the rain or moisture.

Taking the outdoor applications requirements into consideration, we designed the waterproof cabinet, which is made of ABS plastic and can protects your PCB from moisture or dust. The regulation of the waterproof cabinet is 140 x 103 x 49mm, therefore, any PCB whose dimension is within 127mm x 70mm (LxW) can work greatly with it. There are four pre-drilled holes for wire connection of power supply, LED indicators or control buttons. We have prepared various accessories for your convenient integration, including screws, waterproof connector plug and socket, adhesive tape and so on. This can vastly save your time of preparation and enjoy the pure joy of DIY audio.

2pcs 140x103x49mm Waterproof DIY Cabinet WDC140 Case For JAB1/ JAB2 / JAB3+



Sure Electronics is going to participate in Prolight + Sound Guangzhou 2021

Sure Electronics is going to take part in Prolight + Sound Exhibition Guangzhou, which is held in China Import and Export Fair Complex in May 16th – 19 th, 2021. Our boost number is Hall 3.1 H18. We would love to sincerely invite you to visit us!

We are going to exhibit the CVAA series, which is constant voltage amplifier specially designed for mass notification system. CVAA series contains 7 mono or stereo models, all of which can directly output 70V/100V/120V high output voltage, without any need of step-up transformers, saving the cost and improving the audio quality. The constant voltage amplifier is capable of delivering 100W – 500W output power per channel, offering sufficient headroom for connection with more speakers in applications such as conference system, background music system, emergency broadcast and so on.

CVAA series supports both constant voltage mode and constant resistance mode, suitable for local music system and long distance signal transmission. Fully understanding the importance of the reliability of constant voltage system, Sure Electronics develops CVAA series with full protection circuit in power supply, input and output. In addition, we will carry out extremely strict test for CVAA series before shipment to ensure that it can run stably for long time.

We will also show you the high performance DSP solution for digital crossover applications and amplifier solution for portable speakers.

We would like to invite you to our booth (Hall 3.1 H18) for a visit with greatest sincere.

Looking forward to meeting with you!

2 x 50 Watt Class D Audio Amplifier Board w ADAU1701 DSP & BT 5.0 - JAB3+



SUFR5015 2‘’ 12Ohm 15W Speakers Released

To provide our customers with full set of audio solution, Sure Electronics has decided to enlarge the speaker product line. The first model of speaker has been released!

SUFR5015 is a 2inch full range speaker, whose normal impedance is 12Ohm and the rated power input is 15W. With the 2-layer Copper Clad aluminum Wire (CCAW), it’s pretty easy to connect and integrate the speakers into your audio systems. The voice coil is Kapton coil and the tinsel leads from voice coil to terminal assembly are constructed by 0.1gram 12 strands pure silver wire. The speaker is equipped with an aluminum dust cap, which can prevent dust particles from falling into the voice coil, affecting the normal operation of the voice coil and the speaker unit. This 12Ohm version is optimized for 24V systems, 4Ohm version is available for enquiry.

In addition, we will release more speakers in various dimensions, all featuring high reliability and high performance audio quality. Please stay tuned!

2pcs 2Inch 12Ohm 15Watt Speaker Unit Full Range (SUFR5015)



Sure Electronics is going to participate in China Self-service, Kiosk and Vending Show

Sure Electronics Co., Ltd. is going to participate in the China International Self-service, Kiosk and Vending Show 2021 from Mar. 30th to Apr. 2nd. The booth number is N4 H06. We sincerely invite you for a visit.

We will display KAB series, audio amplifier boards specially designed for self-service equipment, in this show. KAB series is derived from Sure Electronics standard amplifier technology platform, inheriting full protection and high reliability but still with high cost-performance ration. Fully taking the requirements of Self-service and vending machines in power, channels and audio, Sure Electronics develops amplifier boards in compact size as mono or stereo low power with specific improvement on the speech intelligence, perfectly applicable to kiosk, service robot, guiding machine, ticket machine, and so on. All amplifier boards in KAB series are equipped with full protection circuit to ensure its reliability so that they can run stably for long period even if in outdoor working environment.

Sure Electronics also provides audio isolation solution for customers, including USB codec input, differential input and isolation transformer solution, which can suppress the noise effectively to provide users with better using experience.

If you need full set of audio solution, you can be satisfied here in Sure Electronics. Matched power supply (AC/DC or DC/DC) and speakers are also available.

If you are interested, please feel free to contact us with info@sure-electronics.com.

We look forward to meeting with you in our booth (N4 H06) in the CVS exhibition.

2 x 8Watt Class D Audio Amplifier Board - TPA3110

2 x 2Watt Class D Audio Amplifier Board - PAM8803

2 x 15Watt Class D Audio Amplifier Board - TPA3110



4CH 100W Audio Amplifier Board JAB5 with ADAU1701 DSP & BT 5.0 Released

Sure Electronics is honored and excited to announce the release of the new member of JAB series – JAB5. JAB5 is a four-channel audio amplifier board integrated with high performance Bluetooth 5.0 (Supporting APT-X HD) and ADAU1701 DSP, which delivers 100W per channel into a 6Ohm load. With employed signal level sensor system and power management system, JAB5 features low power consumption and high efficiency, suitable for home audio, DIY audio, Bluetooth speakers and digital crossover applications.

Multiple input methods

JAB5 supports Bluetooth input, line input and I2S input. Signal would be mixed and delivered to speaker output.

Multiple output modes

JAB5 supports 4.0 mode (4 x 100W), 2.1 mode (2 x 100W + 1 x 200W) and 2.0 mode (2 x 200W). The switching between the three modes is achieved by automatic cables identification, without any need of other operations. Furthermore, JAB5 supports cascading with another JAB5 to get 8 x 100W or other audio systems through the I2S output port.

Multiple control methods

Four ports are provided for external potentiometers to control the volume, gain and frequency. With the connection of ICP5 or higher version(s), customers can achieve programming DSP through SigmaStudio or remote control with APP or PC UI.

If you are interested in JAB5, please contact us with info@sure-electronics.com.

JAB5 4 x 100 Watt Class D Audio Amplifier Board w ADAU1701 DSP & Bluetooth Ver5.0 for Audio 4.0/2.1/2.0 System

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