Aurora DSP / Studio Notes
Metal Guitar Tone Beyond the Usual Recipe
Try a different amp channel. Shape the signal before it distorts. Let an ugly layer do one useful job. Eight experiments for heavy guitars with more identity.
Recording & production · Approx. 11-minute read
There is nothing wrong with an overdrive into a high-gain amp and a familiar cabinet. That combination works. But it can become a reflex: tighten the bottom, add gain, load the usual IR, then spend the rest of the session trying to EQ some personality back in.
A more interesting starting question is: what should this guitar do in this song? A fast, percussive riff needs different things from a slow chord, a tremolo-picked melody or a background drone. Heaviness is not one frequency curve. It is the relationship between attack, sustain, texture, bass and arrangement.
These experiments connect ideas from Joey Alarcon's Recording Heavy Metal Guitars session with Chernobyl Audio's guitar-tone demonstrations. They are not a reconstruction of either creator's preset. Use them to make your own decisions, with the tools already in your session.
The experiments
- Turn your DI into a controlled test
- Use EQ as part of the distortion circuit
- Try the amp that looks wrong for the job
- Audition microphones before blending them
- Give an ugly tone a small, useful role
- Tune for the part you are actually playing
- Control the palm mute, not the whole guitar
- Arrange the size instead of EQing for it
01 Turn your DI into a controlled test
A DI is more than a rescue track. It lets you audition tones without changing the performance. Pick an eight-bar passage containing palm mutes, an open chord and a higher-register phrase. Keep a clean original and use copies or sends for the experiments.
Change one variable at a time: input level, amp channel, cabinet or microphone position. Match the listening level after the complete processing chain. Turning down the input to make a loud preset quieter also changes how it distorts, so that is a different experiment.
Joey explicitly level-matches his recorded amp comparisons in part three, around 31:00. Carry that discipline into software. Listen in short switches, first for the problem you are investigating and then with bass and drums. A louder version should not win by default.
For physical reamping, use an appropriate line-output-to-instrument interface, such as a reamp box, and record the microphone return to a separate track. Keep that return out of the reamp send to avoid a feedback loop. Radial documents the routing in its reamping workflow. Follow the amplifier's speaker/load requirements; never connect a speaker output directly to an audio interface.
02 Use EQ as part of the distortion circuit
We often think of EQ as cleanup after the amp. Put it before the amp and it becomes a way of designing the distortion itself. A low-end reduction changes how hard those frequencies drive the nonlinear stages. A midrange emphasis changes which part of the guitar pushes forward into saturation.
In his Diamond Sound demonstration, Chernobyl Audio highlights the six-band pedal EQ as a tone-design tool. Later, fuzz and EQ become a more abrasive texture rather than simply a tighter version of the starting tone.
Try it: keep the amp and cabinet fixed. Compare a flat input, a gentle low shelf reduction before the amp, and a broad mid boost before the amp. Then move the same EQ after the cabinet and repeat. Level-match all versions. Listen to note separation and the character of the decay, not just bass quantity.
Do not assume every overdrive wants minimum drive and maximum output. Some are useful precisely because their own distortion adds grain. A familiar setting can be a starting point, but it is not a rule for every circuit.
03 Try the amp that looks wrong for the job
A metal guitar does not have to begin with the most aggressive channel. In Alarcon's third session, the 6505 channel comparison around 25:25 opens up that question. Chernobyl Audio takes a related approach with a less clinical, more yielding black-metal texture in Diamond Sound.
Compare your normal high-gain sound with a crunchier channel pushed from the front. Keep the cab fixed for the first pass. One version may have a sharper attack; another may leave more movement between notes. Neither is automatically more authentic or more heavy.
There is another useful inversion in the Rhino revisit: start with a darker amp tone and use post-EQ to lift the upper range. That is a different route from making every stage bright. It can help separate the distortion character you like from the final balance the mix needs.
Try it: print three short versions: your normal tone, a lower-gain alternative, and a darker tone with a restrained post-EQ lift. Keep the version whose notes survive the drums. Reject it if the lift reveals more hiss than useful detail.
04 Audition microphones before blending them
Four microphones do not have to mean a four-microphone sound. They can be four candidates. In Alarcon's first two sessions, microphone comparisons are a way to find a useful source before reaching for corrective EQ.
03 / Compare positions separately. The drawing marks targets, not mandatory distances or an acoustic measurement.
Start with one mic or one virtual mic. Move laterally while keeping angle and grille distance consistent. Towards the centre often gives a brighter result; towards the edge often softens the top. These are tendencies, not promises, and changing the speaker can matter too. Shure's amp-miking guidance is a useful companion to the listening test.
Only add a second mic when you can name what it contributes: more body, a different attack, less brittle upper mids. Listen to it alone, then to the sum. Check polarity and relative timing. A second signal can make the result thinner even when it sounds good by itself.
04 / For equal, identical signals, a 0.25 ms offset produces a first cancellation at 2 kHz. Real mic combinations are more complex.
Polarity inversion is not the same as time alignment. Different speakers, separate reamp passes and different IRs can still interfere when summed. Do not assume a blend is phase-safe simply because it came from separate recordings. Aim for a useful combined sound, not a visually perfect waveform.
05 Give an ugly tone a small, useful role
A tone that is too abrasive on its own may make an excellent supporting layer. Think of a tight main sound carrying the riff while a quieter fuzz or narrow, grinding texture adds identity. The question is not whether the extra track sounds impressive in solo. It is whether muting it removes something worth keeping.
Chernobyl Audio's Hector demonstration uses complementary tones in a quad-tracked arrangement. His darker and brighter sounds are chosen with each other in mind. That is a useful arrangement example, but it should not be confused with sending one DI through two amps.
Try it: begin with two actual rhythm performances. Add a texture to each side from that side's DI, or record another pair if you want performance density. Bring the extra sound up from silence until it contributes, then back it down slightly. Check the blend in mono and verify plugin latency compensation.
A copied take does not become double tracking just because it has a different preset. Parallel processing can create timbral differences; it does not create a second player's timing and articulation.
06 Tune for the part you are actually playing
Alarcon makes an easily overlooked point around 18:30 in part one: the attack of a firmly picked note can read differently from its sustained pitch. A tuner checked with gentle, isolated notes may not tell you how repeated hard picking will behave.
Before changing the amp, record the actual riff clean and check it against the bass. Listen to both the initial attack and the held portion. A fast chugging section and a ringing chord may expose different tuning problems.
This is not a recommendation to tune every guitar flat by a fixed amount. Start with technique, setup and consistent picking. If a small compensation helps a particular part, test it against the arrangement and retune for the next part. The goal is musical agreement, not a rule copied from a meter.
07 Control the palm mute, not the whole guitar
Sometimes the guitar has enough body until one palm mute makes the low mids jump forward. A permanent EQ cut can solve that moment by making every other moment too thin. Alarcon discusses multiband control around 20:55 in part three; Chernobyl Audio demonstrates a related dynamic-EQ option.
Find the region that actually blooms in your recording. Use a dynamic band that reduces it only when the buildup happens. Start with a small maximum reduction, then adjust timing so the attack remains convincing and the band recovers before the next phrase. Listen to sustained chords as well as chugs.
Do not inherit someone else's exact cutoff, threshold or release time. Tuning, cabinet, part and playing level all affect the decision. Likewise, a high-pass setting from a standard-tuned black-metal demonstration is not a universal instruction for a low-tuned guitar.
And stop hunting resonances once they stop being a problem in the mix. A narrow boosted sweep can make almost any frequency sound unpleasant. Remove distractions, not every trace of the amp's personality.
08 Arrange the size instead of EQing for it
By part four of Alarcon's session, the sound grows through octaves, harmony and higher parts, not just through a larger rhythm-guitar EQ curve. Each addition has a different job. Supporting parts do not all need the same low-end weight as the main riff.
Try a narrow, mid-forward octave layer that arrives only in the chorus. Or keep the rhythmic guitars dry while a higher line carries the space. A different amp or mic character can help that line remain audible without simply turning it up.
Then mute the bass. If the apparent size of the guitars collapses, that is useful information: some of what you were calling guitar weight belonged to the combined arrangement. Restore the bass before deciding that the guitar needs more low end.
Finally, remove the extra layers for one section. If the chorus no longer feels like an arrival when they return, reconsider their role. Constant density can erase the contrast that made the heavier section work.
Your next session
Keep the riff. Change the question.
Choose one experiment, not eight at once. Save the starting tone, print the alternative and match their listening levels. Ask which one makes the song clearer, more threatening, stranger or more alive. Keep a short note explaining why it won.
The best result may be a cleaner sound, a rougher sound or one less track. The point is to choose it deliberately.
Listening & further reading
Primary listening sources: Joey Alarcon, Recording Heavy Metal Guitars, Pro Studio Live, parts 1–4; and the following Chernobyl Audio videos. The examples reflect those sessions and versions, not current product specifications. The EQ video discloses Aurora DSP sponsorship; these links are credited demonstrations, not presented as independent product endorsements.
- Can Aurora DSP Laboga Diamond Sound Do BLACK METAL?
- How I Make Metal Guitars Sound Awesome With EQ in 4 Steps
- MASSIVE UPDATE!! Aurora DSP Laboga Mr. Hector
- Aurora DSP Rhino Revisited: Is It Still Worth It in 2025?
- Radial: The Reamping Workflow
- Shure: Miking Guitar Amps
All six figures are original Aurora DSP editorial diagrams prepared for this article. The comb-filter graph is a calculated idealized example, not a measurement of a product. For monitoring decisions, continue with our studio acoustics guide.



