808

Role in the mix

The 808 (born from the Roland TR-808 kick, a tunable sine wave with a long decay) is, in trap, drill, modern rap, phonk and a lot of pop and R&B, both a long kick and a bass line at the same time. It brings the track's key into the lowest register and most of the mix's energy below 100 Hz. It has two components: the fundamental (typically 35–65 Hz, sinusoidal) and the harmonics (2nd, 3rd, 4th, 80–400 Hz and beyond) added by saturation and distortion, indispensable for the 808 to be heard on phones, laptops and earbuds. A well-mixed 808 is: tuned, mono, dynamically controlled, saturated as much as needed and in a clear relationship with the kick. For the pure sine sub bass (house, dubstep, DnB) see the dedicated guide.

Sound selection and programming

• Sample tuning: the 808 must be in tune. Check the note with an analyzer or a tuner and correct it in Channel settings (Pitch / Root note of the Sampler or FPC; or use a dedicated instrument). Careful: many samples have an initial pitch drop (the note falls in the first 20–80 ms) and the perceived note is that of the tail.
• Register: keep the fundamental between E1 (41.2 Hz) and G#1/A1 (51.9–55 Hz) as the ideal zone; D1 (36.7 Hz) is the low limit for most systems; above B1 (61.7 Hz)–C2 (65.4 Hz) the 808 starts to sound "bloated" and less deep: transpose up an octave if the melody rises.
• Glide / slide: in FL's piano roll use slide notes or portamento (Channel settings: Porta) with Mono mode active. Typical glide time 30–120 ms in trap, longer and more evident in UK and NY drill.
• Length: notes must end before the next kick or the next note to avoid beating; use the envelope (release 20–80 ms) to avoid end-of-note clicks.
• Kick and 808: either the kick is short and its click precedes the 808, or the 808 starts together with the kick and the kick carries only the click (HP on the kick at 60–100 Hz). iZotope recommends shortening the kick's decay so that it doesn't mask the 808.

Gain staging

The 808 is the element that consumes the most headroom. Channel peaks −8/−4 dBFS in premix, with the RMS able to get very close because the sine wave has a low crest factor (≈ 3 dB). Use an RMS/LUFS meter: in a trap mix the 808 is often the loudest element in short-term LUFS along with the vocal.

Corrective EQ

• HP at 20–30 Hz (12–24 dB/oct) for the infrasonic content below the lowest note.
• Notch or dynamic EQ at the kick's fundamental (e.g. 50–62 Hz) sidechained from the kick (iZotope technique): the 808 drops only there and only when the kick hits.
• Mud 150–300 Hz after the distortion: cut 2–4 dB if it competes with vocals and chords.
• Low-pass at 3–8 kHz after the distortion to remove the digital hiss of the high harmonics.

Creative EQ

• Boosting the sub is rarely done: if it's missing, change the sample or the note.
• Small emphasis at 100–200 Hz (2nd and 3rd harmonic) for readability.
• In drill: emphasis in the 200–800 Hz harmonic zone for "talking" slides.

Compression

• Serial: VCA or opto, ratio 3:1–4:1, attack 10–30 ms, release 100–300 ms, 2–4 dB, to even out notes of different velocities. Many producers don't compress and work with saturation + clipper.
• Limiter/clipper on the channel: sets the 808's maximum peak so the bus and master don't receive random peaks.
• OTT (Xfer, free) at low depth (10–30%) in hyperpop and trap to bring out the harmonics.

Transient shaper

Useful for giving attack to a soft 808 (Attack + 10/30%) or for shortening the tail (Release −) when the 808 must not overlap the next kick.

Saturation and distortion (essential)

• Harmonic saturation (Fruity Blood Overdrive, Distructor, Saturn 2, Decapitator, iZotope Trash): adds the 2nd harmonic (even, soft, tube/tape) and the 3rd (odd, more aggressive, transistor/clipping). iZotope explains that analog saturation adds even harmonics that complement the odd ones of a square wave.
• Parallel: duplicate the 808 or use a send with heavy distortion, HP 100–150 Hz before or after (so the distortion doesn't touch the sub) and blend: clean sub + distorted harmonics.
• Low Lifter (FL stock): generates harmonics from the low band above an adjustable crossover; great for translation on small speakers.
• Clipper 1–3 dB (Fruity Soft Clipper) for density and control.
• In drill and phonk the distortion is obvious and part of the sound design.

Delay and reverb

Almost never on the 808. Exceptions: a short reverb filtered with HP 300 Hz on the harmonics alone in a breakdown; a delay throw on a last note before the drop.

Modulation

None on the sub. A chorus/unison on the harmonics (above 200 Hz, in parallel) can widen the 808 in hybrid genres (future bass), always with the sub in mono.

Stereo and panning

Absolute mono below 120–150 Hz. If the 808 is stereo (samples with unison or effects), use Fruity Stereo Shaper/Spreader (Low Bypass + Mono) or the mixer track's Stereo separation knob. The correlation must stay at +1.

Sidechain

• From the kick to the 808: Fruity Limiter COMP sidechained (attack 0–5 ms, release 50–150 ms, 3–8 dB) or, better, dynamic EQ on the kick's band.
• If the kick and 808 start together and the 808 already has an attack, a sidechain with a very short release (30–60 ms) is often enough.
• Alternatives: Fruity Peak Controller on volume, Gross Beat, Kickstart 2, LFO Tool.

Automation

• LP filter that opens in the intro and at the drop.
• Mute the 808 in the last bar before the chorus (the classic "drop out") and bring it back on the downbeat.
• Heavier distortion in the chorus.
• Pitch automation (dive) on the last note of the section.

Differences by genre

Common mistakes

• Untuned 808 or with a perceived note different from the root: beating with the chords.
• Notes too low (below D1): they disappear on almost all systems and eat headroom.
• Stereo 808 in the sub: the low end empties out in mono and in clubs.
• Saturation without level control: it seems better only because it's louder (use level matching).
• Long kick on top of the 808: beating between the two fundamentals.