I always thought my Trace Elliot made every bass sound the same, but my Ampeg and SWR don't alter the sound as much, unless I dial it in. I used an Ashdown at a gig on Friday, and though not as bad as the Trace, it seemed to make my G&L and Fender sound similar, and not how they normally sound,
I don't own the Ashdown, and I didn't have alot of time to fiddle, so I could be misjudging it, but my Trace was terrible. My fender sounded no better than my cheap Aria played through that amp.