AKG

AKG WMS40MINSTRSETUS25B - UHF Instrument Band US 25 B 537.900 MHz Wireless System with Beltpack and Receiver

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SKU: WMS40MINSTRSETUS25B Barcode: 885038038948
Estimated availability: December 27, 2025
Pre-order Regular price 192,14 € inc. VAT

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AKG WMS40MINSTRSETUS25B - US25B 537.900 MHz Instrument Band UHF Wireless System with Bodypack and Receiver

The AKG WMS40MINSTRSETUS25B is the WMS40 Mini series wireless instrument set in the US25B band (537.900 MHz) . It includes the compact SR40 Mini receiver, the PT40 Mini bodypack and the MKG L instrument cable (6.35 mm jack → 3-pin mini XLR), offering a plug & play solution with 30 hours of battery life on a single AA battery and a balanced 6.35 mm TRS audio output. Thanks to HDAP (High Definition Audio Performance) technology, the system delivers clear, stable sound for guitars, basses, keyboards and instrument pickups, with a response of 40–20,000 Hz and a typical THD of 0.8% . The SR40 Mini features a volume control and three status LEDs, and is powered by the included 110–240 V SMPS supply with international adapters.

Main features

  • Fixed frequency at US25B 537.900 MHz for immediate deployment without programming.
  • Ready to play set : SR40 Mini + PT40 Mini + MKG L cable for guitar/bass/keyboard.
  • Exceptional battery life : up to 30 hours with 1 x AA in the PT40 Mini battery case.
  • Receiver output : 6.35 mm TRS balanced jack (adjustable level).
  • Audio : 40–20,000 Hz, typical THD 0.8% and typical S/N 110 dB(A).
  • Indicators and Controls : 3 LEDs (Power/RF OK/AF Clip) on the receiver; adjustable gain on the beltpack; low battery warning .
  • Universal power supply : power supply with EU/UK/US adapters (110–240 V).
  • Simple operation : plug & play solution with HDAP technology.

Product benefits

  • Mobility and reliability for a wireless instrument, with a full-day's autonomy.
  • Natural and consistent sound thanks to HDAP processing and a balanced output path.
  • Rapid deployment : Fixed frequency and included MKG L cable reduce setup times.
  • Supports guitar and bass levels, plus AKG MicroMic microphones via mini XLR.

Use cases

  • Live : guitars and basses in venues and festivals that require quick and stable setup.
  • Events and Rentals : Robust and simple solutions for traveling musicians.
  • Rehearsal and education : freedom of movement in classrooms, combos and practice rooms.

Frequently Asked Questions

Does it include the instrument cable?
Yes. The set includes the MKG L (6.35 mm jack to 3-pin mini XLR) to connect a guitar, bass or keyboard to the PT40 Mini bodypack.

What is the typical range?
Approximately 20 m line of sight, under normal conditions.

Can I use other AKG capsules/mics?
Yes. The PT40 Mini bodypack accepts AKG microphones with mini XLR connectors ( MicroMic series) as well as instruments via the MKG L cable.

Is this frequency legal in my country?
This model operates on 537.900 MHz (US25B) . Check local spectrum regulations before use.

Description for projects

AKG WMS40 Mini UHF wireless instrument system at US25B 537.900 MHz , consisting of SR40 Mini (balanced 6.35 mm TRS jack output, volume control, 3 status LEDs, 110–240 V power supply included) and PT40 Mini (3-pin mini XLR input, gain control, battery life up to 30 h with 1×AA); MKG L cable included; system frequency response 40–20,000 Hz , typical THD 0.8 % , typical S/N 110 dB(A) ; typical range ≈ 20 m .

  • Brand:AKG
  • Model:WMS40MINSTRSETUS25B
  • Guy:UHF Wireless Instrument System (WMS40 Mini)
  • Band/Frequency:US25B – 537.900 MHz (fixed frequency)
  • Set components:SR40 Mini Receiver + PT40 Mini Beltpack + MKG L Instrument Cable
  • Connection to instrument:MKG L cable (6.35 mm jack → 3-pin mini XLR)
  • Ticket in a flask:3-pin mini XLR; gain control; battery indicator
  • Receiver output:6.35 mm TRS jackbalanced; adjustable level
  • Audio Technology:HDAP (High Definition Audio Performance)
  • Frequency response (audio):40–20,000 Hz
  • Harmonic distortion (THD):typical 0.8% @1 kHz
  • Signal-to-noise ratio:typical 110 dB(A)
  • Battery life of the flask:up to 30 h with 1×AA
  • Typical range:≈ 20 m (line of sight)
  • Receiver power supply:SMPS 110–240 V with EU/UK/US adapters
  • Receiver indicators:Power, RF OK, AF CLIP (3 LEDs)
  • Receiver dimensions (W×H×D):133 × 43 × 132 mm
  • Receiver weight:≈ 0.58 kg
  • Dimensions of the pouch (W×H×D):60 × 75.5 × 30 mm
  • Flask weight:≈ 60 g
  • Package contents:SR40 Mini, PT40 Mini, MKG L cable, 110–240 V power supply with adapters, 1×AA, BC400 belt clip
  • Spectrum usage:Check local regulations for operating on 537.900 MHz
  • Type Audio
  • Vendor AKG
  • SKU WMS40MINSTRSETUS25B
  • Bar-code 885038038948

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