Hiby doesn't mention whenever the W3 uses the AK4377A or AK4377ECB that is also used on the Tempotec V1. The sound in the V1 is very warm. I'm hoping this is not the case with the W3. I'm asuming that whenever AK4377 is mentioned, it refers to the AK4377ECB and whenever the AK4377A is mentioned, it refers to the AK4377AECB. At least, that's according to AKM's product page.