How to Make Peak Time Techno Leads in Serum 2

Most peak time techno leads fail the same way: someone takes a saw, cranks the distortion and ends up with a sound that's loud in solo and ear fatiguing in the track. The leads that actually cut through a big system are built differently. The grit comes from FM and sync inside the oscillator, and the distortion is filtered before it ever gets driven.

This is my step by step Serum 2 patch for a peak time techno lead, with the screenshots from my session. Build it once with these settings and you'll understand the concept well enough to make your own variations.

Why most techno leads sound harsh instead of powerful

Distortion on a raw saw adds harmonics everywhere, including a lot of fizz in the top end and mud from the low end being pushed into the distortion. You then spend ages EQing out problems you created. The approach here flips that:

• Movement and metal come from FM, with OSC B used only as a modulator, never heard directly.
• Bite comes from sync warp on the same oscillator.
• The distortion gets a high pass filter in front of it, so only the part of the sound you want to be gritty actually hits the drive.

Serum 2 oscillator setup for peak time techno leads

Step 1: Choose the wavetables

• OSC A: a square wave. Any square from the Analog category works. I used S2 Tables > Analog > AT Model 10.
• OSC B: a classic saw.

The square is the carrier, the sound you'll actually hear. The saw is the modulator, and because it's so rich in harmonics it gives the FM a lot to work with. Once you're comfortable in Serum 2, swap in your own shapes, but start with these so you can hear what each step does.

Step 2: Turn OSC B volume all the way down

Pull OSC B's level to zero, but leave the oscillator switched on. This is the key move of the whole patch. OSC B should only be heard through the FM it feeds into OSC A, not as a second layer. That way the texture lives inside one timbre instead of two sounds stacked on top of each other, and the lead stays focused.

Step 3: Apply FM from OSC B

In OSC A's warp menu, choose FM (B). Adjust the amount to taste. I start somewhere around 30 to 50% and push higher when I want it nastier.

Because OSC B is silent, everything you hear now is OSC A being frequency modulated by the saw. Low amounts add a metallic edge. Higher amounts turn it into that clangy, aggressive tone you hear in a lot of peak time records. This amount is also the best knob to automate over a build.

Step 4: Add sync warp

Serum 2 lets you stack two warp modes on one oscillator, so add Sync on OSC A alongside the FM and adjust it to taste. Start subtle, around 10 to 20%, and go further for more intensity.

Sync resets the waveform faster than its own cycle, which pushes energy into the upper harmonics and gives you that tearing, vocal quality classic hard sync leads have. Combined with FM, it's what makes the lead sound hypnotic and driving rather than just distorted.

Step 5: Split the octaves

• OSC A: +1 octave
• OSC B: minus 1 octave

That puts the modulator two octaves below the carrier. In FM the pitch ratio between the two decides the character, and a clean octave relationship keeps the result harmonic and in tune, just dense and busy. Try other ratios later and you'll hear the lead turn bell like or atonal very quickly.

Step 6: Fine tune OSC A slightly

Detune OSC A a little, around 5 to 15 cents. It takes the edge off the perfectly static digital feel and makes the lead feel a touch more analog. Keep it small. This is movement you feel, not a chorus effect.

Step 7: Minimal unison

Add unison with a maximum of 2 voices and turn the detune down, around 10 to 20%. Two voices give you a bit of width and thickness without smearing the attack. More voices make the lead wider but softer, and at peak time you want definition. If you want width, there are better places to put it than the core sound, which I cover in how to make melodic techno leads wide without killing their power.

FX chain: filter before distortion

The order of the FX decides whether this lead sounds gritty or just harsh. The important bit happens inside the distortion module.

Step 8: Zero Square distortion with a high pass in front

• Mode: Zero Square, drive around 40 to 60% to start.
• Filter: high pass, placed before the distortion (Pre).
• Filter frequency: between 300 and 600 Hz, with the resonance turned up.

With the filter set to Pre, the high pass shapes the signal before it gets driven. Whatever sits below roughly 150 to 200 Hz never reaches the distortion, so it can't turn into mud. The resonant peak at 300 to 600 Hz means that band hits the drive hardest, and that's where the punchy, raw grit comes from. Sweep the frequency while the lead plays and stop where it sounds most aggressive without getting nasal.

Step 9: Reverb

Add a reverb. I'd go with a hall or plate. For peak time techno keep the decay around 4.5 seconds and use some pre delay, so the dry attack hits first and the tail comes in behind it. Don't overdo the mix: peak time leads need space, not a washed out cloud.

Step 10: Compression

• Threshold: set it so you get 3 to 6 dB of gain reduction.
• Output gain: bring it up slightly to make up for the level you lost.
• Release: 100 to 200 ms if you want some rhythmic pumping, faster (50 to 80 ms) for tighter control.

The compressor ties the FM, distortion and reverb together into one sound and keeps the level steady, which matters when you automate FM amount or drive later in the track.

Final touch: find the sweet spot

Now go back to OSC A and move the FM (B) and Sync positions together while you play. The two interact, so small moves make a big difference. The screenshot below shows where I landed for this lead.

Treat all of this as a starting point. Try different wavetables in both oscillators and adjust every value to your track. The concept is what matters: FM (B) on OSC A with B silent, sync on top, and a filter before the distortion.

Quick reference: Serum 2 peak time lead settings

Parameter	Setting
OSC A wavetable	Square (I used S2 Tables > Analog > AT Model 10)
OSC B wavetable	Classic saw
OSC B volume	Zero, oscillator still on
OSC A warp 1	FM (B), start at 30 to 50%
OSC A warp 2	Sync, start at 10 to 20%
Octaves	OSC A +1, OSC B minus 1
OSC A fine tune	5 to 15 cents
Unison	2 voices max, detune 10 to 20%
Distortion	Zero Square, drive 40 to 60%
Distortion filter	High pass, Pre, 300 to 600 Hz, resonance up
Reverb	Hall or plate, decay about 4.5 s, some pre delay
Compression	3 to 6 dB gain reduction, release 100 to 200 ms

Common mistakes

• Leaving OSC B audible. Then you have a square and a saw fighting each other plus FM on top. Keep B silent.
• Switching OSC B off completely. The level goes to zero, the oscillator stays on, otherwise there's nothing to modulate with.
• Filter after the distortion. A high pass after the drive removes mud that was already created. Before the drive, it never gets created.
• Too much unison. Four or more voices sound huge in solo and soft in the club mix.
• Static automation. A lead that sounds the same for 64 bars gets boring. Automate FM amount, sync or the distortion filter frequency across the arrangement. My post on how rhythmic modulation shapes energy in techno goes deeper into this.

Questions producers ask

Why use FM instead of just more distortion?

FM changes the harmonic content inside the oscillator, so the tone itself becomes more complex and moves when you change the amount. Distortion on a plain waveform mostly adds brightness and density. You still use distortion here, just less of it and in a controlled band.

Can I build this in Serum 1?

The FM (B) part, silent OSC B and the distortion with a Pre filter all exist in the original Serum. Serum 1 only lets you use one warp mode per oscillator though, so you'd have to choose FM or Sync, or put the second one on another oscillator.

What BPM is this lead made for?

It works across the usual peak time range, roughly 130 to 145 BPM. At faster tempos shorten the reverb decay so the tail doesn't blur the notes together.

How do I make it sit better with a big kick and bass?

Raise the distortion filter frequency a little so the lead has even less low mid, and use sidechain compression from the kick if it still clashes. For more on getting the whole club sound together, read Berlin techno sound design: capturing underground club energy.

Build this lead once, then make five versions of it by changing only the wavetables and the FM amount. You'll learn more from that than from any preset. When you want finished leads to pull apart, start with the free After Dark Serum 2 presets, and for the full set go for the After Dark pack. If you're after softer textures for the breakdown, my ethereal flute pads in Serum 2 tutorial pairs well with this one.