AKG WMS40M2VOCSTUS25B-D - US25 B/D Vocal Band UHF Wireless System with 2 Microphones and Receiver

AKG WMS40 Mini2 Vocal Set US25B/D - 2-Channel Fixed UHF Wireless System with 2 HT40 Mini Handheld Microphones and SR40 Mini Dual Receiver

The AKG WMS40 Mini2 Vocal Set US25B/D is a fixed-channel dual UHF wireless vocal system that combines two HT40 Mini handheld transmitters ( cardioid dynamic capsule) with the compact SR40 Mini Dual receiver. This version operates on the paired frequencies US25B = 537.900 MHz and US25D = 540.400 MHz , ready to use without complex setup. Battery life is one of its strong points: each transmitter can last up to 30 hours on a single AA battery. The receiver features two independent 6.3 mm jack outputs (one per channel) and LED signaling (POWER, RF OK, AF CLIP) for clear live operation.

With FM modulation and HDAP compression, the system offers an audio bandwidth of 40 Hz to 20 kHz, maintaining clear voice quality and good gain before feedback. It is a plug-and-play solution designed for small stages, classrooms, places of worship, hotels, and corporate events , where simplicity, reliability, and immediate start-up are valued. It includes a universal switching power supply (100–240 V) with adapters.

Main features

• Dual fixed channel on US25B (537.900 MHz) and US25D (540.400 MHz) to use two microphones simultaneously without complex coordination.
• 2 × HT40 Mini : Handheld microphones with cardioid dynamic capsule and ON/MUTE/OFF switch.
• SR40 Mini Dual receiver with two independent 6.3 mm jack outputs , volume control and POWER / RF OK / AF CLIP indicators.
• Extra-long battery life : up to 30 hours per transmitter with 1×AA .
• 40 Hz–20 kHz audio with HDAP compander for clarity and intelligibility.
• Plug&play setup : turn on, select levels, and work.

Product benefits

• Ready in seconds : Two predefined channels (B/D) reduce assembly time.
• Low operating cost : 30 h per AA minimizes battery replacements.
• Stable and clear signal for voice thanks to the cardioid capsule and the HDAP compander.
• Independent outputs : separate mixing and processing of each microphone from the receiver.

Use cases

• Presentations and training in companies and educational centers.
• Events and places of worship with two speakers or presenters.
• Small venues , hotels and gyms where simplicity is key.

Frequently Asked Questions

• What exactly does the set include? SR40 Mini Dual Receiver, two HT40 Mini handheld microphones, and a universal switching power supply .
• Can I add more systems? Yes, using other frequency pairs (e.g., US25 A/C) to avoid overlaps.
• What is the typical range? Suitable for short/medium line-of-sight distances (rooms and small stage environments).

Description for projects

Dual analog UHF wireless system for voice, fixed channels US25B 537.900 MHz and US25D 540.400 MHz . SR40 Mini Dual receiver with 2 independent 6.3 mm jack outputs , volume control and POWER/RF OK/AF CLIP indicators. 2 HT40 Mini transmitters with cardioid dynamic capsule, ON/MUTE/OFF switch and up to 30 h of autonomy with 1×AA. Audio: 40–20,000 Hz ; HDAP compansion ; FM modulation . Switching power supply 100–240 V included.