Rated Power
120W
Product Overview
The Harmonai HJ-803T is a 120W high-power portable Bluetooth speaker featuring a classic two-way design with an 8" woofer and a 2.75" tweeter, delivering powerful, deep bass and clear, crisp highs. It includes a built-in 12.8V/6Ah lithium iron phosphate (LiFePO4) battery—offering high safety and long cycle life. Supports Bluetooth and TWS dual-speaker pairing, plus multiple I/O options including USB, AUX, OTG, LINE IN/OUT—ideal for diverse audio source connectivity.
Speaker Drivers
8" woofer + 2.75" tweeter × 1
Battery Type
12.8V / 6Ah lithium iron phosphate (LiFePO4)
Input Interfaces
USB / AUX / OTG / LINE IN / LINE OUT / Headphone output / Ch2 input / Ch3 input
Wireless Connectivity
Bluetooth / TWS dual-speaker pairing
Main Volume Control
Supports unified master volume adjustment
Channel 1 (Music)
Music volume / Treble / Bass adjustment
Channel 2 (Microphone)
Wired mic volume / Wireless mic volume / Mic treble / Mic bass / Reverb / Echo adjustment
Channel 3 (Instrument)
Instrument volume / Treble / Midrange / Bass / Reverb / Delay adjustment
Microphone Priority
Supported—automatically lowers background volume when microphone is active
Recommended Use Cases
With its 120W output and rich interface configuration, the HJ-803T is widely suited for outdoor events, public square performances, business presentations, and classroom training. Its independent 3-channel EQ allows simultaneous connection of background music, microphones, and instruments—each channel operating without interference. Bluetooth and TWS functionality enable seamless wireless playback and stereo pairing of two speakers—eliminating cable clutter. The LiFePO4 battery ensures safe, reliable, long-lasting operation.
For more details about the Harmonai HJ-803T or bulk procurement options, contact us anytime for professional support.
Harmonai ACT-518 Dual-Channel True Diversity Wireless Microphone
The Harmonai ACT-518 is a professional dual-channel true diversity wireless microphone system with PLL frequency synthesis and infrared auto-sync, delivering stable transmission up to 500 meters in open spaces. Two mics operate simultaneously without interference, powered by two AA batteries for ~8 hours.$20.63
Harmonai Relay Amplifier – Professional UHF Antenna Distribution Amplifier for Wireless Microphone Systems
The Harmonai Relay Amplifier is a signal-boosting device designed specifically for wireless microphone antenna distribution systems. It extends transmission distance, reduces signal attenuation, and supports simultaneous connection of multiple receivers for stage performances, conference systems, and broadcast studios.$65.00
Harmonai XTA448(24version) Digital Audio Processor — High-Value Export Edition
The Harmonai XTA448(24version) is an export-focused digital audio processor that builds on the proven XTA448 22-version architecture—delivering improved sound quality while removing AES functionality to maximize value for entry-level professional applications.$280.69
XTA448 Digital Audio Processor (22 Version) — Domestic Alternative, High-Value DSP
The XTA448 (22 Version) is Harmonai’s next-generation digital audio processor (DSP), featuring select high-quality domestic OEM components while delivering 1:1 functional fidelity and outstanding sound quality — an ideal high-value solution for professional audio processing.$275.38
Harmonai A2D XY Microphone Stand
Harmonai A2D XY Microphone StandContact for price
Harmonai A4D Microphone Stand Adapter
Harmonai A4D Microphone Stand AdapterContact for price
Harmonai A35 Monitor Accessories
Harmonai A35 Monitor AccessoriesContact for price
Harmonai M30 Measurement Microphone
M30 Measurement Microphone - Contact us for pricingContact for price
Harmonai PSM600 Wireless In-Ear Monitor
PSM600 Wireless In-Ear Monitor - Contact us for pricingContact for price
Harmonai E-190 Interview Microphone
E-190 Interview Microphone - Contact us for pricingContact for price
Harmonai D-6S Wired Dynamic Microphone
D-6S Wired Dynamic Microphone - Contact us for pricingContact for price