Shure QLXD4 Single Digital Wireless Receiver

The QLXD4 is Shure's half-rack, single-channel digital wireless receiver — the leaner sibling to the ULXD4, occupying half a rack unit when paired in a 1U mounting shelf. It handles one transmitter at a time and puts that signal out as analog audio, either via XLR or quarter-inch. That makes it the right tool for rigs where you're feeding discrete channels into a stagebox or a console's local inputs rather than routing audio over a network. House-of-worship setups, mid-size theatre rigs, and corporate tour packages with a handful of wireless channels are the natural home here.

At 10 watts nominal draw with a 14-watt ceiling, two of these in a shelf barely register on your conditioner. The 295mm depth is worth noting — that's nearly a foot of chassis behind the rack ears, so shallow touring cases won't work. Ethernet control means you can integrate it into Shure Wireless Workbench or WWB6 for frequency coordination and remote gain, which matters when your wireless rack is behind a curtain or halfway across a stage. The analog-only outputs are the real operational constraint: every channel needs a discrete physical cable run back to the console. Plan your snake real estate accordingly.

If you're running two to four wireless channels on a predictable, site-specific install or a stable touring package that doesn't need networked audio, the QLXD4 is a sensible, cost-effective choice. If you're scaling past four channels, need Dante or AES67, or want to consolidate audio over a single Cat6 run, step up to the ULXD4 or ULXD4D — the infrastructure savings will outweigh the price difference quickly. Similarly, if you need two channels in one half-rack slot rather than two, look at the QLXD4D dual-channel variant before committing to a shelf build.