AKG WMS40 Mini Instrumental Drahtloses System US25A: 537.500MHz

WMS40 Mini Instrumental Set — Plug-and-Play Wireless for Guitar and Bass

The AKG WMS40 Mini Instrumental US25A is a compact wireless instrument system designed to free guitarists and bassists from the cable tether on stage. It pairs the SR40 Mini receiver with the PT40 Mini pocket transmitter, giving players a clean signal path for live performance, rehearsal spaces, and small venues. Running on a fixed UHF frequency of 660.7 MHz, setup is genuinely instant.

What Sets This System Apart

Where many entry-level wireless kits demand menu dives and frequency scans, this one is built for speed. A professional 3-pin mini XLR connector on the PT40 Mini pocket transmitter accepts any source — guitar, bass, headset, or instrument mic — and ships with an MKG L instrument cable. The receiver's switched-mode power supply accepts US, UK, and EU mains, making the kit travel-ready.

Wireless Performance and Connectivity

This wireless kit delivers clean signal transfer across the full audible spectrum, with a frequency response of 40 Hz to 20 kHz that captures low-B bass rumble and bright guitar harmonics alike. Fixed-frequency operation removes pairing complexity, while the ultra-compact SR40 Mini receiver housing keeps stage clutter to a minimum.

• System Type: UHF wireless, fixed frequency — fast setup with no scanning
• Operating Frequency: 660.7 MHz (US25A band) — stable transmission in its regional allocation
• Frequency Response: 40 Hz – 20 kHz — full-range audio for bass and lead guitar
• Versatile inputs are handled by the PT40 Mini with 3-pin mini XLR, paired with an SR40 Mini featuring a 1/4" (6.35 mm) jack output, ideal for guitar, bass, headset, and instrument mics.
• Battery & Power: up to 30 hours on a single AA cell, plus a 12 V switched-mode US/UK/EU supply — multi-gig runtime with worldwide mains compatibility

Who Should Choose This Wireless Kit

The AKG WMS40 Mini Instrumental US25A is the right choice for working guitarists, bassists, and acoustic performers who need a no-fuss wireless rig for small stages, pubs, churches, and rehearsal rooms. Solo musicians and duos will appreciate the 30-hour battery life that survives a weekend of back-to-back sets, while teachers and presenters benefit from headset compatibility.