I've recently begun using protools after years of playing live, which has introduced me to the amazingly diverse world of preamps for mics. This may be a newbie item, so apologies if I'm farther behind than I thought. Three quick questions.
1. Are they worth the money? And why do they range from $30 to $3,000?
2. Does the 80% rule apply? (80% more money for 20% more product)
3. Are the mic preamps that come built-in to some mixers worth anything?
		
		
	 
 #1- Why does a Rolls Royce or a Ferrari cost more than a KIA, and is it worth it?
 #2- It's more like- 90% of the money goes for the last 10% of performance. However, at       
       the races, that's the difference between the checkered flag and last place.
 #3- Of course, or they couldn't sell them. Did every one of the pit crew show up for the       
       race driving a Countach? No. For some jobs, a Honda Civic or an F150 is the right tool.
To answer the real question, the average project studio doesn't have the budget to support 18, 24, or 64 tracks of top of the line preamps. There are some recording consoles that are built like that, and can cost $100,000 or more. What this usually means is that if we are lucky, we have a few top flight, or at least better channels for critical sources, and a bunch of cheaper channels for when we need a bunch of simultaneous inputs, which often is forced by drums.
  Preamps exist on a continuum from clean or transparent to colored or flattering. Some preamps tell the truth. Others are more like makeup. They are trying to make something sound *better* than it really sounds (often vocals). Doing either one well is what you pay for. If it makes something sound *really* the way it sounds, it'll probably cost money. If it makes it sound *better*, it'll probably cost money. To make things sound worse is generally cheap.
  My opinion- Start with something that's fairly clean, with 2 channels. In the beginning, if you can only have one or two badass preamps, you need one that is versatile, and which is good for stereo recording. Then add a colored channel or two as an alternative for vocals or whatever. Remember that there are no preamps that are perfectly clean or colored, they all exist on a continuum. They all tell some of the truth, and they all lie as well.
  A few years ago, I was asking the same question as you, while making an album. Based on consultations with my mixing engineer and folks on this board, I knew I needed a serious preamp. I was offered a good price on one, and wound up with an Avalon AD2022. I have never regretted buying it. What it does is subtle, because the things I like most about it are the things I *don't* hear- hum, buzz, hiss. Nothing. It's pretty seriously toward the clean side of the spectrum. For color, I like the Pendulum MDP-2.                                          
  
  In less expensive preamps, often cleaner pres are recommended. One, because as noted above, they are more versatile, and therefore a good starting place. The other reason is that *good* colored preamps are generally not cheap. I use a whole spectrum of preamps, ranging from dirt cheap (Behringer ADA8000, M-Audio DMP-3) to mid priced (Joemeek twinQ) to Ohmigod (the AD2022). In the end, 95% of everything I record goes through the Avalon or the Joemeek, The Joemeek is kind of my colored preamp, but it has an advantage. It's color comes from an agressive optical compressor and transformers which can be inserted into or deleted from the signal chain at the push of a button, so it can be configured to run pretty damned clean as well.
  So is it worth it?  That's the funny part. If you ask somebody who doesn't own a Ferrari if it's worth it, he'll almost always say no. If you ask the guy driving the Ferrari, he'll almost always say yes, and his supermodel trophy wife will agree. If you have the money, it's always worth it. If you don't, it's always *not* worth it.  It's all about trying to make yourself feel better. If you can't afford it, it feels better to say that it's all just hype, and you don't really need one. If you own one, it feels better to believe you didn't waste your money. There comes a point where it gets ridiculous, though. If my $30 Timex loses 1 second a year, why on Earth would I shell out for a Rolex?  Each of us has to make our own bang vs. buck call. As I said above, I have *never* regretted buying the Avalon, not even a bit.-Richie