Audio Technica ATW-2129BI two-notes an add-on tone expander when

an add-on tone expander when combined with other modelers

The main difference is that they chose to go with a pressed cone as opposed to a lapped

Pioneer DJ HC-CP08 Accessory Pack for HDJ-CUE1 Headphones (Yellow)

5mm jack cables

4-Channel Audio Mixer: Mix up to four audio signals simultaneously

Audio Technica ATW-2129BI two-notes an add-on tone expander whenThe Audio Technica ATW 2129b Wireless Lavalier Microphone System delivers professional features and wireless microphone quality, while remaining a cost effective solution for presentations, performance PA, houses of worship, nightclubs, restaurants, bars, and more. The system features the ATW R2100b receiver with UHF diversity reception, 10 user selectable frequencies, automatic frequency scan and Tone Lock squelch system for interference free