AKG WMS40MINVOCSETUS45A - US45A Vocal Band UHF Wireless System with Microphone and Receiver

AKG WMS40 Mini Vocal Set US45A - UHF Wireless System with HT40 Mini Handheld Microphone and SR40 Mini Receiver (660, 700 MHz)

The AKG WMS40 Mini Vocal Set US45A is a fixed-channel analog UHF wireless system designed for vocals and presentations, featuring plug & play setup and extra-long battery life of up to 30 hours on a single AA battery in the transmitter. This US45A version operates at 660,700 MHz and combines the HT40 Mini handheld microphone ( cardioid dynamic capsule, ON/MUTE/OFF switch) with the SR40 Mini receiver , which features LED indicators (power, RF OK and AF CLIP ) and a 6.3 mm jack output with level control for direct connection to mixers and active speakers. HDAP companding technology helps maintain clear and stable sound in real-world applications.

The radio link uses FM modulation with an audio bandwidth of 40 Hz–20 kHz , a typical S/N ratio of 105 dB(A) and a typical THD of 0.8% at 1 kHz , with an RF power of around 10 mW (ERP) . The system is non-diversity and is designed for small stages, lecture halls, houses of worship and corporate events, with a typical range of up to 30 m line-of-sight. Included in the box is a universal switching power supply (100–240 V) with interchangeable adapters and one AA battery to get you up and running immediately.

Main features

• US45A (660,700 MHz) fixed channel version for simple scheduling environments.
• HT40 Mini handheld with cardioid dynamic capsule and ON/MUTE/OFF switch.
• SR40 Mini with status LEDs (POWER, RF OK, AF CLIP), 6.3 mm jack output and volume control.
• Up to 30 hours of operation with 1 AA battery in the transmitter.
• Wide range audio: 40 Hz–20 kHz , THD 0.8% (typ.), SNR 105 dB(A) (typ.).
• Typical RF power : 10 mW (ERP) .
• Compander HDAP for clear and stable sound.
• Plug & play : quick assembly, 100–240 V switching power supply with adapters.

Product benefits

• Ready in seconds : Fixed frequency and simple controls for hassle-free start-up.
• True mobility : very high autonomy with a single AA, ideal for long days without constant replacements.
• Focused Voice : Cardioid dynamic capsule improves rejection of feedback and side noise.
• Direct connection : 6.3 mm jack output with level adjustment to mixers, interfaces or powered speakers.
• Easy maintenance : Robust design and accessories included for continued use in rental, education or events.

Use cases

• Presentations and conferences in companies, educational centers and administrations.
• Houses of worship and social events where reliability and ease are a priority.
• Small stages , clubs, gyms, hotels and entertainment.

Frequently Asked Questions

• Can multiple systems be used simultaneously? Yes, multiple fixed frequencies from the WMS40 Mini family can coexist, as long as they don't repeat channels and there's sufficient separation between devices.
• What is the typical range? Approximately 30 m line-of-sight. Obstructed areas or interference may reduce this range.
• Is the receiver output XLR? No, the SR40 Mini offers a 6.3 mm jack output with level control.
• Does it include everything you need to get started? Yes: receiver, handheld microphone, switching power supply with adapters, and 1 AA battery .

Description for projects

Fixed-channel analog UHF wireless system for voice. US45A version (660,700 MHz) . FM modulation. Audio: 40 Hz–20 kHz , SNR 105 dB(A) typ., THD 0.8 % typ. RF power typ. 10 mW (ERP) . SR40 Mini receiver : 6.3 mm jack output with level control, POWER/RF OK/AF CLIP LEDs. HT40 Mini transmitter : cardioid dynamic capsule, ON/MUTE/OFF switch, 1×AA power supply, up to 30 h autonomy. Typical range ≈ 30 m in LoS. 100–240 V switching power supply included.