Plugin sales are a big part of music production culture, and it's easy to believe that the next compressor or reverb will finally make your mixes sound professional. Usually it won't. A small set of tools you know very well beats a huge folder of plugins you've each used once.
The core toolkit
Almost every mix and master can be done with these categories:
| Category | What to look for | Main jobs |
|---|---|---|
| Parametric EQ | Bells, shelves, HPF/LPF with selectable slopes, optional dynamic and M/S modes | Cleanup, tone shaping, making space |
| Compressor | Attack, release, ratio, knee, mix knob, sidechain input and sidechain filter | Leveling, punch, glue, ducking |
| Reverb | Room, plate and hall modes, pre-delay, damping, built-in filters | Space and depth |
| Delay | Tempo sync, dotted/triplet values, filtering on repeats | Echoes, slapback, width |
| Saturation | Drive, mix, output trim, several flavors | Warmth, harmonics, translation |
| De-esser | Adjustable frequency and a listen mode | Vocal sibilance |
| Limiter | True peak mode, oversampling, release control | Final peak control and loudness |
| Meters | Spectrum analyzer, LUFS/true peak meter, correlation meter | Checking what your room hides |
| Utility | Gain, polarity flip, mono, width, bass mono | Gain staging and quick checks |
That's the whole list. Everything else is either a specialized tool or a different flavor of one of these.
Stock plugins are better than you think
Every modern DAW includes an EQ, compressor, reverb, delay and limiter capable of professional results. Many experienced engineers use stock plugins for much of their work because they're light on CPU, stable and quick to use. Before buying anything, spend a few sessions learning exactly what your DAW already includes. I do most of my editing and a lot of mixing in Mixcraft, and its built-in effects cover far more than people assume.
Free plugins worth trying
These are widely used free plugins at the time of writing. Developers sometimes change what they offer, so download only from the developer's official website and check the current version and system requirements.
| Plugin | Type | Why it's useful |
|---|---|---|
| TDR Nova (Tokyo Dawn Records) | Dynamic EQ | A parametric EQ where every band can also work dynamically. Ideal for harshness and resonances that come and go. |
| TDR Kotelnikov (Tokyo Dawn Records) | Compressor | A clean, transparent compressor that suits buses and mastering. |
| Valhalla Supermassive | Reverb and delay | Huge, lush spaces and echoes. Better for ambient and creative effects than small rooms. |
| Voxengo SPAN | Spectrum analyzer | A clear, adjustable analyzer for comparing your mix with references. |
| Youlean Loudness Meter (free version) | Loudness meter | Integrated, short-term and momentary LUFS plus true peak, easy to read. |
| Kilohearts Essentials | Effects bundle | Simple, well-designed basic effects: EQ, compressor, distortion, delay, chorus and more. |
| Analog Obsession | Analog-style collection | A large set of plugins inspired by classic hardware, on a donation-based model. |
Never use cracked plugins
Pirated plugins are a common way to get malware onto a computer, and they're illegal. They also tend to crash, which costs you sessions. With so many good free and affordable options, there's no reason to take the risk.
When paying makes sense
Buying a plugin is worth it when it solves a specific problem you actually have:
- Specialized tasks: pitch correction, noise and click removal, de-reverb or vocal restoration are hard to do well with basic tools.
- Workflow: a plugin that does in one window what would otherwise take five, and that you use on every project.
- CPU efficiency: if your computer struggles, a lighter tool can make a real difference.
- A sound central to your style that you can't get any other way.
Most companies offer trials. Use the full trial period on real projects before deciding, and compare at matched levels against what you already own.
Plugin formats
- VST3 and VST2: the most common formats on Windows; also supported by many DAWs on macOS.
- AU (Audio Units): macOS only, used by Logic Pro and GarageBand among others.
- AAX: the format for Pro Tools.
- CLAP: a newer open format supported by a growing number of DAWs and developers.
Check which formats your DAW supports before installing. Almost all current plugins and DAWs are 64-bit only.
Latency and CPU
Every plugin that looks ahead or works in blocks adds latency. Your DAW compensates automatically during playback (plugin delay compensation), but you'll feel it while recording. Some typical sources:
| Plugin type | Latency | Advice |
|---|---|---|
| Standard EQ, compressor, saturation | Usually zero or a few samples | Fine while recording |
| Lookahead limiters and compressors | About 1–10 ms | Disable lookahead or bypass while tracking |
| Linear phase EQ | Often 20–100+ ms | Mastering and mixdown only |
| Oversampling (2×–16×) | Small, plus much more CPU | Turn up for final export if the plugin allows separate render settings |
| Spectral and restoration tools | Can be large | Process offline and print the result |
When the computer struggles: increase the buffer size while mixing (lower it again when recording), freeze or bounce heavy tracks, and keep reverbs and delays on shared sends instead of one per track.
Studio Tip
Always turn your monitors down before loading a new plugin or preset. A wrong setting, a feedback loop in a delay, or a plugin initializing at full gain can produce a sudden, very loud sound that's hard on speakers and harder on ears.
Keep your plugin folder organized
- Install to one consistent folder so your DAW always finds everything.
- Use favorites or categories to keep your go-to tools at the top.
- Uninstall what you never use. A shorter list means faster decisions.
- Treat presets as starting points. A preset doesn't know your track's level, key or tempo.
Signal Chain Example: a complete mix with only core tools
- Every track: utility (gain) → EQ → compressor where needed
- Vocal: EQ → compressor → de-esser → compressor → EQ → saturation
- Returns: one room, one plate, one tempo delay, each followed by EQ
- Master: EQ → bus compressor → true peak limiter → LUFS meter, correlation meter, analyzer
The real upgrade
If you want your mixes to improve, the best investments usually aren't plugins at all. Decent headphones or monitors, basic acoustic treatment, good reference tracks and time spent learning a few tools deeply make a far bigger difference. The acoustics and monitoring guide explains where to start with the room.