Every recorded drum kit is compressed but that doesn't mean a drummer needs to own a compressor. Recommending compression to someone just starting out is irresponsible.There are two pedals I think everyone should own.
Lots of bass players play with overdrive, distortion, and/or fuzz.
- Tuner - gotta play in tune
- Compressor - every recorded sound you've ever heard has been compressed. It can provide some nice tonal benefits, or it can help even out your dynamics a little, or it can be used as a very noticeable effect.
We're in the golden age of pedals where you can hear all kinds of them on YouTube and then find cheap versions online to try. Hell, order from Amazon and return it if you hate it, Uncle Jeff doesn't need any more money.
You can tune your bass without a tuner pedal.To start, the continuum from near essential to very context dependent:
For bass the only ones I would say are near essential, i.e. people will shake their heads at you for being a noob are:
1) A tuner...being able to tune accurately and silently on stage is a near must. I love and you'll see many people over here loving the Strobe Tuners by Sonic Research FYI
2) A DI with an amp sim. Many venues will want you to go direct. Without endorsing that practice, I'm just noting you'll invariably run in to it. So having a DI that gives you a basic amp/cab sculpted tone will be a must. Lots of people love the Sansamp ones for this. More metal guys often love the Darkglass. I am more of an oddball and like a DSM Humboldt Simplifier because it actually models a Hartke which is my cab of choice.
Everything else is a 'Maybe you need it maybe you don't.' Much of this depends on style. I played Americana for years and never needed anything but a tuner, DI, and compressor. But if you're playing shoegaze, maybe probably yes, you'll want some additional pedals.
Exactly what is hard to say and I'll give you one big tip up front to save you a ton of money in the long run. Don't buy a bunch of pedals until you know what your specific needs are. Instead get a multi effect pedal (and some, notably, also have DIs, amp sims, and tuners built in). Try the virtual pedals there until you know what you need. Then you'll be ready to know what you might want in a more bespoke setup.
Many people, when you get to a pedal heavy genre will eventually settle on something that revolves around
1) some core pedals they use a lot. e.g. their favorite overdrive, their favorite compressor AND
2) a Multi-effect pedal for the other stuff they use less often.
Another thing to study up on is understanding power supplies and options therein. Hey, this is important not to break anything!!! Most pedals use a standard 9 volt, center negative power. The mA (i.e. the current) will vary. Often for digital pedals it will be higher.
Rules:
*Which is part of why many people will multiple pedals will use a pedalboard with a multi-out power under it. Like those made by Voodoo Labs or Cioks. PedalTrain is a very popular pedalboard maker. But you can also DIY a pedalboard if you're handy until you know your needs better.
- Voltage - You can't usually exceed voltage. A 9 volt pedal and a 12 volt power supply usually means - smoke. The rare pedals you can, will say so.
- Current - You can exceed current, but don't under power. A pedal needing 100mA and a power supply with 1000mA = no problem. A pedal needing 300mA and a 200mA power supply, might not work, but isn't likely to harm anything. This also becomes important to keep track of if you are daisy chaining anything. e.g. for a simple board of analog pedals, a OneSpot will work fine. Often, daisy chaining digital and analog will cause some noise*.
- Polarity - don't cross the streams. And if anyone asks you if you are a God, say yes. Seriously though, don't mix up polarity. Center negative is standard. Learn the symbols. Read the manual.
Another thing to think about in general is control schemes. You can go a LOT of ways with this. But at the simplest, you might want to start with a Multieffects unit and an expression pedal. HX Stomp is popular for good reason.
But, for a more elaborate future thinking example, with my pedalboard monstrosity, it is all MIDI controlled. So to switch songs, all I actually have to do is scroll to the song patch on the left two button switch and the Boss MS3 changes presets and turns pedals on and off. All I have to do in songs is usually push one or two buttons on the MS3. Because it is all MIDI controlled. And my expression pedal can control anything on the MS3, Empress Zoia, Sy200, or the Moog drive. In short, I have a studio's worth of effects BUT, once programmed, I don't have to futz with anything while playing.
You don't need amp or cab sim either. The majority of pro bass players use standard DI boxes like Radial or Whirlwind. While some genres do use amp sims more than others it is by no means necessary to use them. This goes for both for live and recording.
What producers do to recordings irrelevant.Sure, most pop music is overcompressed by design, but so are recordings that do not sound compressed. If you think you can tell whether an album or track is compressed or not, you're wrong. If the goal is transparency, you will not hear it.
"Every recorded sound" being compressed was a bit of an overstatement, but there are few exceptions. The reason it's nearly universally done both live and in the studio is to allow the audience to hear all instruments better in the mix.