Yesterday, I plugged into an Ampeg (B-5R I think). The octave effect was set to full. I didn't even know the amp had that feature so when I started to play, I was surprised. I really like that sound. It reminds me of the bass solo sound on "Cape Fear" by the Dave Weckl Band. I liked that Ampeg octave effect sound a lot. I've tried some octave pedals before and I didn't really care for them as much. They sounded too synthentic for me. But the built in Ampeg effect sounded really sweet. Really beefed up the sound for soloing. Can anyone recommend a good octave effects unit? For anyone who knows, I'm looking for that "Cape Fear" solo sound.