The Golden Ear Award winner and highly capable - DSPeaker Anti-Mode 2.0 Dual Core. The latest model with the latest firmware, purchased two weeks ago from an authorized dealer and found it extremely easy to use - calibration with the included microphone is automatic. It took care of my room modes and eliminated the resonance resulting in a huge increase in sound quality. Take a look at the photo showing the before and after curves. Selling because I am getting a DEQX with multichannel correction and DAC for many times more money (10x). This one is basically new, comes with all the accessories in the factory box with packaging - unit, remote, microphone, USB cable and manual. It is reset to factory. Remote still has protective plastic cover and it will be carefully double boxed for safe shipping. I will include USA shipping and no extra for PayPal if you use it. I also accept, checks and money orders. Call or message me with any questions.