AKG WMS420INSETBDA - UHF Instrument Band A Wireless System with Bodypack and Receiver

AKG WMS420 Instrument Set Band A - UHF Wireless Instrument System with PT420 Bodypack, SR420 Receiver, and MKG L Cable

The AKG WMS420 Instrument Set Band A is a UHF wireless system for guitar, bass, and other instruments with a 1/4" (6.3 mm) output. It includes the SR420 receiver (half-rack, switching diversity), the PT420 bodypack , and the AKG MKG L cable (3-pin mini XLR to 1/4" (6.3 mm) jack) to convert your instrument to wireless without modification. Band A operates between 530.025–559.000 MHz with 8 pre-configured fixed frequencies ; the system allows up to 8 simultaneous channels on the same band and a tuning range of up to 30 MHz , ensuring reliable deployments on stages, in rehearsals, and in installations.

The SR420 offers balanced XLR and 1/4" (6.3 mm) outputs, detachable antennas with BNC connectors for RF accessories, RF indicators and audio clip , and adjustable squelch . The PT420 provides up to 8 hours of battery life on 1×AA, charging contacts for use with rechargeable batteries, and clean audio with 40–20,000 Hz , 105 dB(A) S/N, and 0.8% THD . The WMS420 platform incorporates a pilot tone to prevent power-up/power-down pops and ensure stable links.

Main features

• Complete set for instrument : SR420 + PT420 + MKG L cable (mini-XLR 3p → 6.3 mm jack).
• Band A (530.025–559.000 MHz) with 8 fixed frequencies: 530.025 / 532.700 / 540.000 / 541.900 / 546.775 / 557.500 / 557.900 / 559.000 MHz .
• Up to 8 simultaneous systems within the same band; system tuning range up to 30 MHz .
• SR420 Receiver : switching diversity; XLR and 6.3 mm jack outputs ; detachable BNC antennas ; RF/clip indicators; adjustable squelch .
• PT420 Transmitter : 3-pin mini-XLR input; up to 8 h with 1 x AA; charging contacts; gain control.
• Audio Quality : 40–20,000 Hz, 105 dB(A) S/N and 0.8% THD typical.
• Pilot tone and FM analog architecture for stable links and easy operation.

Product benefits

• Freedom of movement without cables on stages, in rehearsal rooms, and in classrooms.
• Clean and stable signal : pilot tone, squelch and detachable antennas allow you to optimize coverage with professional accessories.
• Agile setup : Predefined frequencies and clear indicators reduce commissioning time.
• Low operating costs : up to 8 hours with one AA battery and recharging option via integrated contacts.

Use cases

• Electric guitar and bass live and rehearsal.
• Instruments with 6.3 mm output in music schools and cultural centers.
• Fixed installations that require several channels in parallel within the same band.

Frequently Asked Questions

What's included in the set? SR420 receiver, PT420 beltpack, MKG L instrument cable , 2 antennas, power adapter, and 1 AA battery.

Can I use pedals or amps as usual? Yes. Connect the SR420's XLR or jack output to your pedal chain, amp, or mixer just like you would with a traditional cable.

How many systems can operate simultaneously? Up to 8 within Band A, coordinating the 8 available fixed frequencies.

Description for projects

AKG WMS420 Instrument Set Band A UHF wireless system with SR420 (balanced XLR and 1/4" jack outputs; switching diversity; detachable BNC antennas; RF/clip indicators; adjustable squelch ; 1/2 rack format; 150 × 44 × 200 mm , approx. 620 g ) and PT420 (mini-XLR 3p input; audio 40–20,000 Hz; S/N 105 dB(A); THD 0.8 %@1 kHz; battery life up to 8 h with 1×AA; 60 × 75.5 × 30 mm , 214 g ). Including MKG L cable (mini-XLR 3p → 1/4" jack). Band A 530.025–559.000 MHz with 8 fixed frequencies ; tuning range up to 30 MHz; pilot tone ; FM modulation.