The PSM 300 lacks XLR connectors, requiring adapters for certain setups.

Shure's stereo analogue transmission uses multiplexing, combining signals with a 19kHz carrier tone for signal strength and a 38kHz subcarrier for channel separation.

PSM900 can be configured to send two separate mono mixes by hard-panning left and right, allowing a single transmitter to serve two users.

The PSM 300 requires a full power cycle to mute RF, unlike the PSM 900, which offers a dedicated RF mute button.

Shure PSM 900 allows transmission to be switched off with hardware switches, offering stress-free frequency setup at festivals.

Sennheiser IEM systems can be RF-muted, but require a sequence through the power button and dial, which some find less intuitive.

Given the cost, some recommend choosing two PSM300 systems over a single PSM900 transmitter with two receivers for better audio clarity and flexibility.

PSM 300 reportedly matches PSM 1000 in audio quality, despite being a lower model.

Shure's compander can make sound seem more compressed, whereas Sennheiser's system is often criticized for a higher noise floor.

Shure systems are praised for a lower noise floor, while Sennheiser systems are noted for more constant noise independent of volume.

When using a single PSM900 transmitter for two mixes, it's beneficial to keep the mixes similar to prevent audio distortion due to the transmission method.

In crowded RF environments like Los Angeles and Las Vegas, the PSM 900's additional 12 MHz bandwidth is advantageous.

The PSM 900's RF mute is crucial in multi-room venues to prevent frequency interference.

Shure’s whip antenna is noted to be superior to Sennheiser’s standard 1/4 wave antenna, enhancing range and reception.

PSM900 users can upgrade to PSM1000 receivers for diversity reception, improving performance in challenging RF environments.

Shure's cue mode feature is available in both PSM900 and PSM1000, providing a useful tool for monitoring engineers.

Sennheiser systems integrate with WSM software, enabling efficient frequency management in complex setups.