AKG APS4 With No Power Supply

AKG APS4 Active Antenna Power Splitter (No Power Supply)

The AKG APS4 is a professional-grade UHF antenna distribution system built into a compact half-rack metal housing designed for multi-receiver wireless setups. This unit consolidates RF signals from multiple antenna sources and distributes them efficiently across up to four receivers, making it essential infrastructure for expanding wireless microphone capacity in the studio or live tracking environment. The rugged construction and straightforward BNC connectivity make it a reliable centerpiece for building scalable wireless systems without signal degradation.

Signal Distribution & RF Performance

The APS4 accepts RF input from two independent antenna paths via BNC connectors and distributes that signal across ten RF output BNC sockets, each capable of feeding a separate receiver. Switchable attenuation settings (0, 2, 4, 6, 8, 10, 12, 14 dB) allow precise level matching and prevent overdriving connected receivers, critical when managing multiple wireless packs simultaneously in your recording space. The system operates across the extended 470–952 MHz frequency range, covering UHF wireless microphone bands used for vocal tracking, instrument miking, and talent headsets.

Power Management & Expandability

The rear panel antenna inputs supply 10 VDC to power up to three active antenna elements per signal path, eliminating the need for separate antenna power supplies on compatible active antennas. Two additional antenna outputs allow cascading of up to three further APS4 units for large-scale multi-zone studio or remote recording setups. Note that this variant ships without its external 12 VDC power supply, which must be sourced separately.

Key Features

• Wide-band UHF active antenna and power splitter for up to 4 receivers
• 2 x BNC RF inputs (50 Ohm), 10 x BNC RF outputs (50 Ohm)
• Frequency range: 470 to 952 MHz
• Switchable attenuation: 0, 2, 4, 6, 8, 10, 12, 14 dB
• 10 VDC supply voltage for powering up to three active antenna elements per path
• Two antenna outputs for cascading up to three additional APS4 units
• Rugged half-rack metal housing
• Requires external 12 VDC / 3500 mA power supply (sold separately)
• Includes rack mount kit (RMU4000), two front-mount antenna cables, and ten BNC cables (MKPS)

The APS4 delivers the antenna infrastructure and signal management needed for professional wireless microphone systems operating multiple receivers in studio recording, overdub sessions, and tracking environments where reliable RF distribution and clean gain staging are essential to session success.