The DR-2505 wireless system consists of a small transmitter pack and a receiver component using the UHF radio band. A musician plugs the transmitter pack into the guitar's sound port. The pack remains hidden on the musician's belt. The pack transmits UHF radio waves to the nearby receiver, allowing the guitar's sounds to move through the guitar's amplifiers and speakers for a microphone performance.
The DR-2505 system uses the UHF band for transmitter and receiver communication. However, the UHF radio channel the musician chooses may have interference from other musicians' wireless systems. The DR-2505 offers eight channel choices for reducing the chance of interference. A musician can switch to a different channel until the interference has subsided.
The DR-2505 can develop issues that cause distorted or garbled sounds emanating from the speakers. Most commonly, the transmitter pack has low batteries. Low battery power can cause the radio transmission to weaken between the transmitter and the receiver, effectively creating poor sound quality. The musician can verify the batteries are fresh before performing.
The UHF radio waves depend on a clear pathway between the transmitter pack and the receiver. If there are obstacles in the way, the musician will have intermittent sounds emitting from the speakers, affecting the overall audio quality. It needs to be confirmed that there are no major obstacles, such as stacked amplifiers, between the musician's pack and the receiver.
In 2009, Audio-Technica recalled specific serial numbers of the DR-2505 wireless system line. Some receivers had a defective electronic component, called a capacitor. The faulty capacitors caused the wireless systems to stop transmitting any audio output, although the UHF radio signal communication was tested as clear and strong. Audio-Technica replaced the affected DR-2505 system serial numbers with new receivers.