Frivolous options. Most of those really don't reflect the amplifiers' class, nor make an amp much better. Just flexibility is increased with more of those options.
None of the amps I'm going to use have any of that garbage on them. But of course I'll be using an active crossover setup on the system.

12db/octave is fine for bass. If your deck has a low pass sub filter, use it. If not, make sure that the amp has at least a low pass crossover. Selectable or variable crossover points help, too.

It more or less also comes down to what you want to spend. The Sony XM 2165GTX is a good deal, and will work with your setup if you load it down to 4 ohms mono. </font>[/QUOTE]Well are you the one using the amp. No. From what I can gather he doen't seem like the type that has an active crossover setup going on. So in his case the options would be a good selling point.

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Thats funny. Even if there were like say 3% THD. You wouldn't even hear it LOL. I've never used a audiobahn. But if it produce more than 3% THD thoughout it's power range... LOL. Maybe somebody needs to learn about gains.

Cleaner power [img]graemlins/freak.gif[/img]

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Well I have quit looking for an amp, I don't really have the money to spend constering that I right now have no job and only $800 to go towards a car. But I figer this summer I will have the money. thanks for your help