Thanks, much appreciated. The reducing of the delay seems like it will help with the artificiality of the sound of a hearing aid. I'm also interested in extending the frequency range. Currently most all hearing aids focus on the frequency range that makes speech most clearly, ignoring or rolling off the high frequencies (above around 8K) which puts the high in high fidelity. I'll call the local dealer to see what they say. Probably can't get a fitting for some time however.