LD Systems U506HHD Handheld Wireless Microphone System (655-679 MHz)

LD Systems


This system operates in the 655-679 MHz range. To check if these frequencies are suitable to your area please use the ACMA Channel Finder at

The LD Systems U506HHD is a handheld wireless microphone system that provides exceptional performance. Developed in Germany to bring you affordable, professional technology and sound quality. The radio systems for vocals and speech deliver impressive performance and high reliability, which will certainly exceed your expectations. Designed specifically for professional users to ensure that your performance is an impressive and emotional experience. This professional wireless microphone system with a bodypack and headset operates between 655 and 679 MHz. The True Diversity UHF wireless system is equipped with an automatic scan facility so it finds the best free frequency. Furthermore, its convenient one-touch infrared synchronization of transmitter and receiver facilitates an easy setup.

The U506HHDS high-contrast OLED displays provide an excellent overview of functions, with indicators for group, channel, radio frequency, and signal strength and battery status. You can even enter individual usernames. In addition to the squelch function, the transmitter’s silent pilot tone ensures fail-safe operation. As a result, the U506BPH is perfect for live vocal performances, speech and public addressing, and many more applications.

This U506HHD pack comprises a Dynamic handheld microphone(LDU506MD) and Receiver(LDU506R).

Dynamic handheld microphone (LDU506MD)

The U506HHD pack offers the LDU506MD dynamic Carbdiod handheld microphone. It offers a frequency response between 60Hz and 16kHz. It also features an OLED Display with performance feedback and is powered by 2 x 1.5V AA.

Receiver (LDU506R)

The U506R is a true diversity Receiver with FM. This unit also includes 2x antenna inputs with a BNC antenna connector. It offers a Low Harmonic Distortion of < 0.3 %. It includes an audio output that uses balanced XLR – 12 dBV or 6.3 mm TRS – 18 dBV. For an unbalanced audio output, you can use the 6.3 mm jack.  The front panel also offers an LCD with independent knobs for Menu Functions and Output Volume. A power adapter is included.

  • True diversity UHF wireless system
  • Shock-mounted dynamic  microphone capsule
  • Automatic channel scan
  • Easy one-touch infrared frequency syncing
  • Pilot tone squelch circuit prevents noise
  • Switchable RF transmitter output (2, 10 or 30 mW)
  • Rugged enclosures
  • High-contrast OLED display

Microphone Type: Dynamic Handheld, Cardioid

Operating Frequency: 655 – 679MHzz

Presets: 96 Channels (8 groups of 12 channels)

Frequency response: 60Hz – 16kHz

THD: < 0.9 %

Signal-to-noise ratio: >95 dB

Squelch: < 0.1 %

Pilot Tone: Yes

RF Output Power: Variable (2mW, 10mW, 30mW)

Power Requirements:

  • Receiver: Power Supply 12V DC (included)
  • Body Pack: 2x AA batteries

Operating time (batteries): >10 hr (with alkaline batteries)


  • Receiver: 484 x 44 x 200 mm
  • Transmitter: Ø 50 x 257 mm


  • Receiver: 0.85 kg
  • Transmitter: 0.25 g

        Order weight is calculated on whichever of the dead (actual) or volumetric weight is the greatest. As of 10/9/21 capped $8.80 to $16.50 for up to 20kg to most areas. For orders under $50 options are Standard Postage $8.80 or Express Shipping for $16.50. Orders over $1,000 ship for free. Express Shipping covers one delivery attempt so please provide an address where someone is available to sign for courier delivery between 9am and 5pm weekdays. You can instruct us to ask the courier to leave your parcel unattended in a safe place, although please be aware that if anything happens to the parcel, neither us nor the courier company can be held responsible. Work addresses are a great delivery option. If using a work address please include the business' name.

        * for some larger items does not apply to Australian remote island locations, some mainland remote locations (outside Darwin NT and Perth WA metro areas) or outside Australia. If unsure if you are entitled to capped shipping it is best to contact us prior to placing order.