Shure PS41US In-Line Power Supply 120V

The Shure PS41US is a dedicated in-line power supply designed to deliver regulated 15VDC at 600mA to a specific family of Shure wireless receivers and portable mixers. Its input spec — 120VAC at 60Hz, drawing 15W — positions it as a North American market product; the output is not adjustable and the supply is not rated for international mains. What matters in professional audio contexts is what the regulated output prevents: voltage sag under load and AC ripple that can couple noise into the receiver's audio and RF circuitry. For a wireless receiver like the SLX4 or LX88, the power supply sits upstream of the audio path — unstable power at this stage manifests downstream as RF dropouts, increased noise floor, and in worst cases, audible power supply hum introduced into a mix. The PS41US's regulated output holds the 15V rail steady, which is why Shure specifies it rather than deferring to generic adapters.

In practice, this supply is most valuable in two scenarios: as a direct replacement for a lost or failed OEM supply on compatible Shure hardware, and as a stocked spare in touring or installed-sound inventories where receiver downtime during a show is not acceptable. The 72-inch output cord provides enough reach for most rack configurations without a cable extension, and the small form factor means it can be secured to rack shelving or tacked inside an equipment case without consuming meaningful space. The critical operational caveat is compatibility: this supply powers only the legacy Shure devices listed in its specification, and the 1.7mm DC connector does not match the more common 2.1mm standard used across much of the audio accessory market. Technicians maintaining a mixed inventory of Shure wireless generations should confirm model compatibility before substituting this unit for a different supply in their stock.