I have for sale a like new rf limited ec-2018 turbo with echo microphone.The Road Noise EC-2018 Turbo with talkback is an amplified hand held power echo microphone with 4 pin Cobra / Uniden connector. Features a push-to-talk button on the side and a red on-the-air LED. It has It also has "Reflex Echo", "Whammy Sound Effects", and even the ability to do an "Alien Voice". Controls for this microphone are both internal and external and located on the back of the microphone. The echo volume (or the amount of the effect) is located on the left of the microphone while the echo delay (length of the echo effect) is located on the right. The other two controls are located on the circuit board and are accessible through small holes located in the back of the microphone. VR2 give you access to the talkback control so you can adjust the amount of talkback you'd like to hear through your radio. VR3 adjusts the amount of amplification or gain the microphone will have when you speak into it. I bought the microphone new on Sep 06, 2016 , To use on my yaesu ft-1000D. I only used it for 1/2 hour and did not care for the sound quality. The Microphone impedance on the yaesu is 500 to 600 ohm. The Impedance is 1 K Ohm on the ec-2018. The ec-2018 turbo will work great on other radios. The microphone is in prefect working order And looks new. The scratches in pictures are on the plastic not on mic. I will also throw in a used rf limited xtr 2018. I bought the xtr 2018 for parts. It is all there and works but is for parts. I am asking 55.00 shipped USPS ground with tracking info. PayPal gift or USPS money order for payment. Lower 48 states only. Will send copy of receipt showing what I paid. I am very honest.