While in San Diego at the N Scale Convention, I stopped by the Precision Craft Models booth to see how they were coming along with their E7s with sound. I saw (and heard!) a demo unit running around their test track. Luckily I had my iPaq PDA with a sound recorder so I took some audio recordings to share with you all. Just a disclaimer that this is a preproduction E7 and the audio isn't steller since we were in a hotel garage with lots of noise. This is a 1MB download WAV file which should be playable with Windows Media Player or Quicktime. This is the best recording of the group: http://www.shastarails.com/audio/PCM_E7_sound4.wav I was very impressed with the grumble, bell and horn (which also has a doppler effect to it).
