AKG WMS40MINSTRSETUS25D - UHF Instrument Band US 25 D 540.400 MHz Wireless System with Bodypack and Receiver

AKG WMS40 Mini Instrumental Set US25D – UHF Wireless Instrument System (540, 400 MHz) with PT40 Mini Bodypack and SR40 Mini Receiver

The AKG WMS40MINSTRSETUS25D is a plug & play UHF wireless system for guitar, bass and keyboards operating on the fixed frequency US 25 D: 540.400 MHz . The set includes the SR40 Mini receiver , the PT40 Mini bodypack and the AKG MKG L instrument cable (3-pin mini XLR to 6.3 mm TS jack), ready to use in just a few seconds. It offers up to 30 hours of battery life on a single AA battery , a 40 Hz–20 kHz audio bandwidth and a typical SNR of 110 dB(A) , with a typical THD of 0.8 % , providing a clean signal with headroom for performances and rehearsals. The SR40 Mini features a 6.3 mm (TRS) jack output with adjustable volume and a universal switching power supply (110–240 V AC), while the PT40 Mini incorporates gain control , On/Mute/Off switch and a mini XLR (TA3F) connector compatible with the AKG MicroMics range. The typical operating range is 20 m line-of-sight.

Main features

• Factory set US25D frequency (540.400 MHz) for easy coordination with other US25 sets (A/B/C/D).
• Clear Audio : 40Hz–20kHz, 110dB(A) SNR and 0.8% THD typical.
• Outstanding battery life : up to 30 hours with 1xAA in the pouch.
• SR40 Mini : 6.3 mm jack output (TRS) , volume control, On/Off , RF OK and AF Clip indicators.
• PT40 Mini : mini XLR (TA3F) input with gain control and silent On/Mute/Off switching.
• Cable included : MKG L mini XLR to 6.3mm TS jack for guitar/bass/keyboards.
• Universal power supply with EU/UK/US adapters; immediate plug & play operation.
• Typical range 20 m line of sight.

Benefits for the musician

• Uncompromising mobility : clear, stable sound with full response for instruments.
• Fewer interruptions : 30 hours per AA battery reduces mid-concert changes.
• Instant setup : plug in, set the level, and play; ideal for small venues, hotels, churches, gyms, or rehearsals.
• Versatility : The belt pack accepts other AKG MicroMics microphones/solutions (lavalier, headset, etc.) via mini XLR.

Use cases

• Electric guitar and bass on stage, in rehearsals, and in club gigs.
• Keyboards, electronic and acoustic instruments with pickup.
• Wireless backline for corporate events and places of worship.

Frequently Asked Questions

• Can I combine it with other WMS40 Minis? Yes, by mixing different US25 variants (A/B/C/D) or by using dual receivers in the series, always coordinating frequencies to avoid interference.
• Is it suitable for active basses or high-output guitars? Yes; adjust the gain on the PT40 Mini to avoid clipping and use the SR40 Mini's volume control.
• Is the receiver's output balanced? The SR40 Mini offers a 6.3 mm (TRS) jack output with adjustable volume.
• What's included in the set? SR40 Mini, PT40 Mini, MKG L cable , power adapter with EU/UK/US plugs, and 1 AA battery.
• Regulatory Note : Use of this frequency is subject to local regulations . Please verify legality in your country before operating.

Description for projects

AKG WMS40 Mini Instrumental Set US25D analog UHF system (fixed frequency 540.400 MHz). SR40 Mini receiver: 6.3 mm jack (TRS) output, adjustable volume, On/Off, RF OK and AF Clip indicators; 12 V DC power supply (switching mode 110–240 V AC). PT40 Mini bodypack: mini XLR (TA3F) input with gain control, On/Mute/Off switching, RF power approx. 10 mW; battery life up to 30 h with 1×AA. System audio: 40 Hz–20 kHz, typical SNR 110 dB(A), typical THD 0.8 % at 1 kHz; typical range 20 m in LoS. SR40 Mini dimensions: 133 × 43 × 132 mm; weight approx. 581 g. PT40 Mini Dimensions: 75 × 60 × 30 mm. Includes MKG L cable (mini XLR to 6.3 mm TS jack).