Hola,Mine are two years old and sound fantastic. But, I do have a major problem. OK, it is a Martin Logan problem, I live in a one bedroom apartment. So, to really enjoy the ESL's you really need to turn them up a good bit and ALL the sound, instruments and nuances staart shining through. You hear stuff you have never heard before on a recording. Then if you turn them down at a certain low level you hear all that awesomeness drop out. Im guessing at 70 to 75 db. I haven't measured it although I do have a sound meter. I just haven't thought about it until just now! Anyway, I have to be careful in turning them up too much as the neighbors will also be enjoying my ESLs even though they didn't ask too. So during the day I can turn them up but at night I keep them at the Bose level of sound. In the daytime they sing like angels. The glorious sound gives pure joy and a heavenly feeling. The ESLs in a smaller space of say 600 to 700 Square feet will blow you away. Awesome bass and fantastic clear spine tingling highs. Best bang for the buck in speakers on the market today. Of course in much larger rooms you have to step up in size. But I think I wandered off the topic here. I got caught up in my speakers. Better than drinking alcohol or doing cocaine!