I just bought a used dbx 1066 on ebay.
I'm already wondering if I've done the right thing.
You could do worse.
Still - I feel the need to clarify "IMO" --
There's no reasonable reason (IMO) to run a signal into a compressor on the input chain during tracking - At least not for dynamics control. If you need it, you're probably way too hot. And if you're not way too hot, there's not a chance in hell you'd need it.
Most people I know who compress the input are overdriving the hell out of the preamp and don't even realize what's happening. I'm not saying that's the case here, but it seems more often than not.
Anyway - We can deduce a thing or two here:
1) If the gain staging is within reason at the head amp, there's absolutely no reason to worry about controlling dynamics after the head amp.
2) If you're getting a reasonable signal
post gain reduction after the head amp without using make up gain, you're overdriving your input chain.
3) That's just silly.
4) Overdriving the input chain
on top of running the signal through what most would consider a somewhat "sonically degrading" processor after the head amp - with all the options for handling that later -
in the context of the mix - Do that on a few tracks and you'll quickly understand what happened when people post things like "Why does my mix sound so 'small' compared to other mixes?"
5) I'm not at all against a dynamics controller on the input chain - I'm against *most* dynamics controllers on the input chain. Some are wonderfully flavorful, smooth, silky, rough, whatever. But we're talking either *no* or very minor amounts of gain reduction in such cases, along with using hardware that's "famous" (for lack of a better term) for that flavor. Manley's Variable Mu, Teletronix's LA2A, Urei's 1176 --- You often hear things like:
"I'm looking for a little of that 1176 'grit'..."
"I want to get a bit of that LA2A silk..."
"Pour a little of that VariMu cream on it..."
"Going for a little Trakker-phat..."
You hardly ever hear things like:
"I'm trying to give it that 3630 loss of focus and clarity..."
"I'm shooting for some of that TubeComp hiss and noise..."
But if you want it that bad, you can always track it clean and then mess with it later - again,
in the context of the mix where you can actually make sense of it. And at the very least, you won't have to worry about screwing up your gain staging and overdriving your input preamps. You can always compress later. You can't uncompress later.