Amplifier 3in1 HQsing PRO-4000X

The Amplifier 3in1 HQsing PRO-4000X is an audio processing device designed to make microphone vocals and background music easier to control when singing karaoke. The product is suitable for customers who already have speakers or an existing audio system but want easier vocals, reduced feedback, and improved sound quality without replacing the entire system.

Suitable Room Size

The suitable room size depends on the connected equipment and system setup; each system should be evaluated individually.

Configuration and Technical Specifications

Amplifier 3in1 HQsing PRO-4000X

• 3-in-1 configuration: DSP + 2 UHF microphones + power amplifier.
• Power: 400W RMS, 4000W peak power.
• Connectivity: Optical, Bluetooth, RCA, Coaxial; 4 XLR Balanced outputs L/R/Center/Sub + RCA Out.
• Features: 4 presets – Bolero / Pop Ballad / Remix / Hi-Fi Music, 3-level digital feedback suppression, touchscreen, remote control.
• Suitable for rooms around 323–538 sq. ft. or home systems that need to add active speakers/subwoofer/center speaker.

Customer Experience

• Easier to use for families without technical audio knowledge, especially when properly consulted and set up by HQsing from the beginning.
• Clearer vocals, more balanced background music, and fewer common audio issues such as feedback, thin sound, or weak bass.
• Suitable for family entertainment: karaoke singing, music listening, entertaining friends, weekend gatherings, or creating a fun atmosphere at home.

Notes Before Purchase

Room size, speaker placement, active/passive speaker type, amplifier power, and actual karaoke needs will directly affect sound quality. If you are unsure whether your current system is compatible, please contact HQsing to have your system configuration checked before placing an order.

WHY BUYING FROM HQsing:

• 30-day Return (đổi trả trong 30 ngày)
• 18 Month Product Warranty (bảo hành 1 đổi 1 trong 18 tháng)
• FREE 24/7 Lifetime customer service as long as item still working (Hỗ trợ kỹ thuật 24/7 trọn đời sản phẩm).
• Free shipping USA & Vietnam 

CONTACT US, WE OFFER 24/7 CUSTOMER SERVICE!!!

Freegift

	Party Light HQsing LT323 x 1pc
	Optical Toslink Cable x 1pc

Setup

1. Before installation, contact HQsing to check your current speakers and sound system configuration.
2. Power off all equipment; connect the TV or karaoke player to the PRO-4000X via Optical, Coaxial, or RCA.
3. Connect the speakers to the unit; for active speakers, a subwoofer, or a center speaker, use the XLR Balanced L/R/Center/Sub outputs or RCA Out.

Use

1. Lower the volume, turn on the source first, then the PRO-4000X; turn on active speakers last.
2. Turn on the 2 UHF mics and select the music source on the touchscreen or remote; pair your phone via Bluetooth if needed.
3. Choose the Bolero, Pop Ballad, Remix, or Hi-Fi Music preset to match the song, then raise the volume gradually.
4. If the mic feeds back, choose a suitable anti-feedback level and point the mic away from the speaker face.

Care

• Wipe the touchscreen with a soft, dry cloth.
• Store the mics and remote in a dry place and avoid drops.
• Turn off active speakers before the PRO-4000X; unplug when not in use for long periods.