Install & first launch
The Master is the mastering-bus finisher in the NHOF Software suite. It does two things, and does them at the highest fidelity: it shapes tone with a 32-band mastering equalizer, then glues, weights and controls level with a dialed-in master-bus compressor. Everything runs in double precision, adds zero latency, and — crucially — a flat, disengaged plugin is bit-transparent. It does nothing to your signal until you ask it to.
Installing — the one-click installer (recommended)
- macOS — open
The Master Installer.pkgand follow the prompts. It's Universal (Apple Silicon + Intel) and Apple-notarized — installs clean, no warnings. It places the VST3, AU and Standalone for you and removes any older copy so you never run a stale build. - Windows — run
The Master Installer.exe. (Right-click the.zip→ Properties → tick Unblock before extracting if shown; if SmartScreen appears, More info → Run anyway.) - Launch your DAW and rescan plug-ins if it doesn't pick up The Master automatically.
Prefer to place the files yourself?
- macOS — copy the VST3 and AU into the standard system plug-in folders (
/Library/Audio/Plug-Ins/VST3and.../Components) and the Standalone app into Applications. - Windows — copy
The Master.vst3intoC:\Program Files\Common Files\VST3; the Standalone app can live anywhere convenient.
Where to put it
The Master is a master-bus / mastering tool. Insert it as the last processor on your master (2-bus) output, or on the master bus of The Blapp Machine. You can also run it Standalone to master a bounced file or to process a live feed.
A 60-second first pass
- Insert The Master last on your 2-bus and play the loudest section of your song.
- Drag a few EQ nodes to shape tone — pull down a harsh spot, add a touch of air up top.
- Engage the compressor with COMP, pick the GLUE model, and lower THRESH until the GR meter shows a few dB of movement on peaks.
- Bring MAKEUP up to match the bypassed loudness, then toggle BYPASS to check you've improved the mix, not just made it louder.
EQ first, then glue
Audio moves through The Master in a fixed, deliberate order — tone-shape the bus, then compress it:
Input gain hits the EQ first so the compressor reacts to the tone you've already dialed — carve a resonance out before it triggers the detector, and the glue stays smooth. The compressor then acts on the shaped signal, and a final output trim sets your delivery level. The BYPASS toggle in the header passes audio through clean while the meters stay live, so you can keep watching levels while you compare against the processed sound.
Reading the window
The window opens at 1000 × 640 px and is fully resizable (from 860 × 560 up to 1600 × 1000). The face is the NHOF house look — machined controls, brass corner screws, and the diamond-N brand mark. There are five regions, top to bottom:
Header
Title, global BYPASS, the A/B compare button, and COPY →.
Equalizer
The full-width EQ graph with the live spectrum drawn behind the response curve. Takes about half the height.
Master Compressor
Model selector, engage/auto toggles, sidechain controls, the compressor knob row, plus INPUT and OUTPUT.
Meters
Right-hand column: three vertical meters — IN, GR, OUT.
Footer
NHOF logo and brand mark.
The 32-band mastering EQ
The equalizer is presented as a single large graph. The horizontal axis is a log frequency scale from 20 Hz to 20 kHz; the vertical axis is ±18 dB. Grid lines mark 30, 50, 100, 200, 500 Hz and 1, 2, 5, 10, 20 kHz, with the 0 dB line highlighted.
Spread across that range are 32 draggable band handles (nodes), color-graded from blue in the lows through teal and amber to rose in the highs. Each node is an independent bell (peaking) filter. The bands are log-spaced at roughly 3.2 bands per octave, so there is always a handle close to whatever frequency you want to touch — surgical when you need it, broad when you don't.
Working the curve
| Gesture | Result |
|---|---|
| Drag a node up / down | Sets that band's gain, ±18 dB. |
| Mouse-wheel over a node | Adjusts that band's Q (about ×1.12 narrower per notch up, ×0.89 wider per notch down). Q ranges 0.2–18, default 2.8. |
| Double-click a node | Resets that band to 0 dB (flat / bypassed). |
| Hover / select a node | Shows an isolated dashed bell whose width reflects the Q, plus a floating FREQ / GAIN / Q readout at the top-left of the plot. |
The glowing response line is the summed output of all active bands — the actual EQ shape being applied. Behind it, a live spectrum analyzer paints 96 color-graded columns with peak-hold, so you can see exactly what part of the mix you're carving.
Surgical vs. broad
- Surgical: wheel a single node to a high Q (narrow) and pull it down a few dB to notch out a resonance, a harsh spot, or a room boom without touching neighbouring frequencies.
- Broad / tonal: nudge two or three adjacent nodes a small amount at a low Q (wide) for gentle tilt and air — a shelf-like lift without hard filtering.
Glue, weight & loudness
Below the EQ is the master-bus compressor — the suite's dialed-in glue. Engage it with the COMP toggle, then choose a character from the model selector. The three models are genuinely different DSP topologies, not presets:
Glue
Classic feed-forward VCA-style bus compressor. Soft 6 dB knee, 50/50 RMS-plus-peak detection, symmetric odd-order saturation. The transparent "hold it together" option.
Character
A feedback detector that reads its own output, with a wide 12 dB knee and RMS-heavy detection. Program-dependent release and a biased shaper add warm harmonics. Musical and forgiving.
Germ
An asymmetric germanium-style exponential shaper. 9 dB knee, peak-leaning detection. Gritty and harmonically rich — for attitude and color on the bus.
Every control, explained
| Control | Range | What it does |
|---|---|---|
| COMP | on / off | Engages the compressor. When off and settled, audio is passed through bit-identically. |
| Model | Glue / Character / Germ | Selects the topology. Switching crossfades over 10 ms to stay click-free. |
| THRESH | −48…0 dB | The level above which gain reduction begins. Lower it until the GR meter shows movement on peaks. |
| RATIO | 1.2:1…20:1 | How hard the signal is compressed above threshold. Gentle bus glue lives around 1.5:1–3:1. |
| ATTACK | 0.05…120 ms | How quickly the comp responds to transients. Slower attack lets punch through; faster attack tames peaks. |
| RELEASE | 40…2000 ms | How quickly gain recovers. Ignored while AUTO REL is on. |
| AUTO REL | on / off | Program-dependent release: stretches from ~0.09 s on transients to ~1.1 s on sustained material. On by default, and a safe place to start. |
| MAKEUP | 0…24 dB | Output gain to compensate for the level you've compressed away. Match it to your bypassed loudness for a fair comparison. |
| HARMONICS | 0…1 | Per-model saturation amount. At exactly 0 the shaper is skipped entirely and the path is mathematically clean. |
| SC HPF | 20…500 Hz | High-pass on the detector so bass doesn't over-trigger the comp. Applied when an external key is patched (see §06). |
| INPUT | −24…+24 dB | Gain into the whole chain (before the EQ). |
| OUTPUT | −24…+24 dB | Final output trim, your delivery level. |
Keying the compressor
The detector can listen to something other than the main mix. The SC source menu offers three modes:
- SC: INTERNAL — the compressor keys off the program signal itself (normal mastering behavior).
- SC: AUDIO — the detector reads the plugin's dedicated stereo sidechain input bus. Route any track from your DAW into it to duck the master against, for example, a kick.
- SC: MIDI — incoming MIDI notes synthesize a percussive key envelope (fast ~1 ms attack, ~120 ms decay, velocity-scaled). Any MIDI source can drive rhythmic ducking without an audio feed.
The LISTEN toggle replaces the output with the key signal, so you can hear exactly what the compressor is reacting to while you set the SC HPF. Turn it off again before you commit.
Sidechain presets
The SC PRESET menu carries a bank of 12 factory starting points, each of which sets threshold, ratio, attack, release, SC-HPF and auto-release together:
— (manual) · Kick · Pump · Kick · Tight · Snare · Bass → Kick · Sub → Kick · Vocal · Rider · Vocal · Level · Drum Bus · Full Mix · Pump · Guitar · Synth / Pad
Factory presets are read-only. Use the SAVE button to store your own; user presets persist to a JSON file in your user application-data folder and reappear in the menu on relaunch.
Watching what you do
The right-hand column carries three vertical meters, updated at 60 Hz:
- IN — input level, −60…0 dB, green → amber → red.
- GR — gain reduction, filling downward from the top, 0…−18 dB. This is your primary compressor readout.
- OUT — output level, same scale as IN. Watch it to keep your delivery level in check.
A/B comparison
The header carries a complete two-slot compare system:
- A / B — instantly swaps the entire plugin state (all EQ, all comp settings) with a stored snapshot. The button text flips between "A / B" and "B / A".
- COPY → — copies the current settings into the other slot, so you can branch from a good starting point and tweak.
- The inactive slot is also drawn as a dashed ghost curve on the EQ graph, so you can see the difference, not just hear it.
Tips for finishing a mix or beat
- Reference at matched loudness. Compression makes things louder, and louder always sounds "better" for a moment. Use MAKEUP to match the bypassed level, then BYPASS back and forth to judge honestly.
- Subtractive first. On the master bus, cutting problem frequencies usually beats boosting. Notch a harsh 3 kHz or a boomy 200 Hz before you reach for air on top.
- Small moves. On a full mix, ±1–3 dB of EQ and 1–3 dB of gain reduction is a lot. The 32 fine bands are there for precision, not for drama.
- Let the EQ feed the comp. Because EQ comes first, fixing the low-end balance often smooths the compressor for free — the detector stops chasing an over-loud kick.
- Use A/B for decisions. Park a conservative master in slot A and an aggressive one in slot B, then pick with your ears.
- On a beat in The Blapp Machine, insert The Master on the master bus, glue with the Glue model, and add a touch of Germ harmonics if you want the drums to feel bigger and grittier.
Common questions
The plugin doesn't seem to be doing anything
By design, a flat EQ and a disengaged compressor are bit-transparent. Confirm BYPASS is off, engage COMP, and move an EQ node or lower THRESH so there's something to hear.
The compressor is pumping on every bass note
The low end is over-triggering the detector. Dip the lows in the EQ, or — with an external key patched — raise the SC HPF so the detector ignores sub energy. A slower ATTACK and AUTO REL on also help.
My external sidechain isn't ducking
Check that SC source is set to AUDIO and that your DAW is actually routing a track into The Master's sidechain input bus. Use LISTEN to confirm the key signal is arriving.
Does it add latency?
No. The Master is zero-latency — no lookahead, no plugin-delay compensation required — so it's safe to leave live on your master while tracking.
Why 32 EQ bands?
At roughly 3.2 bands per octave you always have a handle right where you need it, so the same EQ covers both surgical notches and broad tonal tilts without switching tools. Bands you don't touch cost nothing.
Where do my custom sidechain presets live?
They're written to a JSON file in your user application-data folder and reload automatically. Factory presets are read-only and always present.
Can I run it without a DAW?
Yes — the Standalone app (Mac & Windows) masters a bounced file or a live input directly.