SumoBass mono effect · the low end in mono, the highs left wide
The only bass mono plugin you'll ever need for a low end that holds up everywhere.
Make your bass mono below the frequency you choose and keep everything above it wide, or wider. The low end stops drifting between the speakers and plays solid on club systems, vinyl, phones and one-speaker boxes, as loud as it was in stereo. Hear and see every change, at zero latency.
- Use it on 5 computers per copy
- Lifetime updates
- 90-day money-back guarantee
- Download link in minutes
- VST3, AU and AAX, Windows and macOS
- Try it free
Formats and DAWs
Windows 10 and 11 (64-bit): VST3 and AAX
macOS 11 or later: VST3, AU and AAX
Works in any 64-bit DAW that loads VST3, AU or AAX plug-ins.
Licence
Use it on up to five of your own computers per copy you buy. Yours for good, no subscription. Unlock it with your email and a six-digit code, no dongle and no password. It checks in now and then and works offline in between.
Delivery
Download links by email within about five minutes, and always in your account under Downloads.
Hear the difference
The same wide basses, without and with Sumo, in stereo and summed to mono.
Wide Reese bass, anchored
A wide stereo Reese bass · Bass / Reese Anchor (180 Hz, WIDTH 120 %)
The same Reese, played in mono
The Reese summed to mono, as a club plays it · Bass / Reese Anchor
Stereo 808, centred
A stereo 808 loop · Mono Bass 120 (the default: 120 Hz)
The 808 in mono
The 808 summed to mono · Mono Bass 120
Synth bass, club safe
A wide synth bassline summed to mono, as a club plays it · Club / Club Safe (150 Hz)
Wide pad, clean bottom
A wide pad · Wide / Pad Bottom Clean (250 Hz)
Every clip is level-matched, so the difference you hear is tone, not volume.
Sumo in action
Why Sumo
One solid centre below FREQ
Everything below the frequency you set goes to the centre through a steep 24 dB-per-octave crossover, so a wide bass, 808 or pad stops drifting and phasing between the speakers. On real bass loops the stereo part under 50 Hz drops 32 to 41 dB, and the centre is left untouched from 20 Hz to 18 kHz.
As loud once it is mono
A plain mono cut makes a wide bass quieter. KEEP LEVEL gives the centre the energy the sides carried, so the bass keeps its level in stereo and its mono sum gets up to 5 LU fuller, and a peak guard keeps the fill from pushing the peaks more than 1 dB past the input's.
Hear and see what changed
MONO CHECK plays the whole output in mono, as a club system or a phone would, and works with ENGAGE off too. SOLO REMOVED plays only what is taken out. A low-end correlation meter shows the bass going in, the bass coming out and the whole mix, from -1 to +1.
Freq. Width.
Two big knobs do the work: where the low end turns mono, and how wide everything above it plays.
- VST3 · AU · AAX
- Windows and macOS
- 0 ms latency
- 13 presets
The bass mono effect
- Mono below the corner you choose. 40 to 300 Hz through a steep 24 dB-per-octave crossover, with CLUB, VINYL and MASTER keys for 150, 120 and 100 Hz.
- The highs left wide. The top untouched by default, or up to 50 % wider.
- As loud once it is mono. KEEP LEVEL gives the centre the energy the sides carried, and never lifts the peaks more than 1 dB.
- Hear and see every change. MONO CHECK, SOLO REMOVED and a low-end correlation meter.
- Zero latency. 0 samples at every setting.
- FREQ (40 to 300 Hz), WIDTH (0 to 150 %) and AMOUNT, with the CLUB, VINYL and MASTER keys.
- KEEP LEVEL, MONO CHECK, SOLO REMOVED and the LOW IN, LOW OUT and FULL OUT correlation meter.
- MIX, IN and OUT with meters, a linked safety ceiling and ENGAGE.
- 13 factory presets and your own preset files; A/B, undo and redo, MIDI Learn; a window from 75 to 200 %; the full manual.
REESE ANCHOR
A wide Reese that holds in mono.
Bass / Reese Anchor: the low end mono up to 180 Hz and the top 20 % wider, so a detuned bass keeps its spread in stereo and stays solid when it is summed.
What Sumo does
Every control has one job: a low end that stays solid on every system.
FREQ
Choose where the bass turns mono
40 to 300 Hz, 120 Hz by default at the knob's centre. Below it the stereo side is taken out through a steep 24 dB-per-octave crossover, half-way at the corner: at the default the side at 60 Hz is 25 dB down and at 30 Hz 48 dB down, while 240 Hz keeps all but 0.5 dB of its width.
CLUB, VINYL and MASTER
The right corner in one click
Three keys set FREQ to the corners the guides use: CLUB 150 Hz, because club systems play the bass in mono; VINYL 120 Hz, the low end a cutting lathe can follow; MASTER 100 Hz, a mastering-style mono bass for hi-fi and streaming. A key stays lit while FREQ sits on its frequency.
AMOUNT
Fully mono, or just narrower
How much of the low stereo side is taken out, 0 to 100 %. 100 % (the default) is fully mono below FREQ; 50 % halves the low side and keeps some of its width, for when a touch of spread is wanted.
WIDTH
Keep the top wide, or widen it
The stereo width above FREQ, 0 to 150 %. 100 % leaves the highs exactly as they are; 150 % lifts their stereo side 3.5 dB for a bigger top over a solid bottom; 0 % makes the top mono too.
KEEP LEVEL
No level lost to mono
On by default. It gives the centre below FREQ the energy the sides carried, up to +12 dB, so a wide bass stays as loud once it is mono and fills out its mono sum, and it keeps the top's level as WIDTH moves. The fill never pushes the peaks more than 1 dB past the input's. Off, Sumo is the plain side cut.
MONO CHECK
Hear it the way a club plays it
The whole output summed to mono, as a club system, a phone or a one-speaker box plays it. It works with ENGAGE off too, so you can hear the bass thin out before and stay solid after. A listening key: never saved, never in a preset.
SOLO REMOVED
Hear exactly what is taken out
Only the low stereo part Sumo removes, on its own. Turn FREQ and AMOUNT while you listen and stop as soon as nothing you want is in it. A listening key: never saved, never in a preset.
Correlation meter
See the low end settle
Three needles from -1 to +1. LOW IN is the bass coming in below FREQ, LOW OUT the bass going out, which sits at +1 once it is mono, and FULL OUT the whole output, where WIDTH shows. +1 is mono, 0 is wide, -1 cancels in mono.
MIX
Back off the whole move
MIX scales every move back toward your track at once, AMOUNT and WIDTH together, against the same crossover, so a part setting never combs. 100 % by default.
IN and OUT
Gain where you need it
Input and output gain, -24 to +24 dB, from your DAW's controls and automation, with IN and OUT meters in the footer. A linked safety ceiling keeps the output under 0 dBFS and never turns a mono low end back into stereo.
13 sourced presets
Start from settings that work
Club, vinyl, mastering, hi-fi and home theatre corners, a gentle centre, a Reese anchor, a sub-only mono, a wide top over a solid bottom and a clean pad bottom: thirteen starting points built from documented mastering and mixing practice.
A face that moves
Watch the low end come together
Two streams of red light pour in from the upper corners and meet in one heavy column. When the low end that plays is mono the column stands whole; when it is wide it parts into two legs. Its light follows the output, and the wordmark's light breathes with it.
Inside the plugin
The Sumo window: two big knobs, the quick-set keys, KEEP LEVEL and a low-end correlation meter.
Every feature
Everything in Sumo, down to the smallest switch.
37 features
The low end
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FREQ
40 to 300 Hz: everything below it made mono
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CLUB, VINYL and MASTER
150, 120 or 100 Hz in one click
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AMOUNT
Fully mono below FREQ, or just narrower
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WIDTH
0 to 150 %: keep the highs as they are, or widen them
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KEEP LEVEL
A wide bass stays as loud once it is mono
Listen and see
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MONO CHECK
The whole output in mono, with ENGAGE off too
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SOLO REMOVED
Hear only what is taken out
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Correlation meter
LOW IN, LOW OUT and FULL OUT, from -1 to +1
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Audio-reactive face
One column of light when the bass is mono, two when it is wide
Mix and output
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MIX
Every move scaled back together, with no comb
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IN and OUT gain
-24 to +24 dB from your DAW, with meters
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Peak guard
KEEP LEVEL never lifts the peaks more than 1 dB
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Safety ceiling
Never past 0 dBFS, and the mono low end stays mono
Workflow and control
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A/B compare and A>B
Two complete settings, switch in one click
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Undo and redo
Step back and forward, or press Ctrl+Z
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MIDI Learn
Take complete control of your workflow: right-click any control on the face, move a knob
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Host automation
Automate every control from your DAW
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ENGAGE
Click-free bypass, to hear the before and after
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IN and OUT meters
See the level going in and coming out at a glance
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Tooltips
Every control explains itself as you point at it
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Resizable window
75 to 200 %, and the size you pick is remembered
Presets
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13 factory presets
Starting points built from real settings producers use
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Previous and next arrows
Audition presets one click at a time
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Save your own
Keep your settings as .bassmonopreset preset files
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Open presets folder
Back up or share your presets in one click
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Reset to default
Back to a clean start in one step
Performance
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Zero latency
0 samples at every setting: use it while you track
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Measured CPU
Under 1 % of one core; about 0.9 % more with the window open
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Anywhere in the mix
On a bass, an 808, a pad, a bus or the master
Licence and compatibility
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VST3 and AAX, Windows 7 SP1 or later
Loads in any 64-bit Windows DAW with VST3 or AAX
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VST3, AU and AAX, macOS 10.13 or later
Loads in any Mac DAW with VST3, AU or AAX, Intel or ARM
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5 computers per copy
Studio, laptop and more on one licence
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Email and code unlock
No dongle, no password, no extra app
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Works offline
No internet needed between check-ins
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Check for updates
From the plugin's menu; nothing installs without asking
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Lifetime updates
Every future update included
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Platinum priority support
Questions answered by the people who build it
How Sumo compares
The whole bass mono job in one insert, with the checks most leave out.
| Sumo | Typical bass mono plugins | |
|---|---|---|
| The job | Mono below FREQ, the width above it and the level kept, in one insert | A mid/side EQ set up by hand, or a fixed mono switch |
| The corner | 40 to 300 Hz, with CLUB, VINYL and MASTER keys | One fixed frequency, or a guess |
| Level | KEEP LEVEL: a wide bass stays as loud once it is mono | Quieter the wider the bass was |
| Checking | MONO CHECK, SOLO REMOVED and a low-end correlation meter | A separate mono switch and meter, routed by hand |
| The highs | Left as they are, or wider with WIDTH up to 150 % | Left as they are |
| Latency | 0 samples at every setting | Linear-phase designs add latency |
| Try-and-compare | A/B, A>B, undo and redo | Often missing |
| Hardware control | MIDI Learn on every control on the face | Often host automation only |
| Licence | 5 computers per copy, no dongle, works offline | Often fewer activations, or a dongle |
| Updates | Lifetime updates included | Often paid upgrades |
"Typical" describes what we commonly see in this category; it does not describe any particular product. Sumo facts are from the plugin and its manual, October 2026.
What you get
Vox Samples
90-day money back · Thank you
Specs and system requirements
- Formats
- VST3 and AAX on Windows; VST3, AU and AAX on macOS
- Operating system
- Windows 7 SP1 or later, 64-bit; macOS 10.13 or later, universal (Intel and ARM)
- Host
- Any 64-bit DAW that loads VST3, AU or AAX plug-ins
- Channels
- Stereo; it also loads on a mono track, which has no stereo low end to fold
- Sample rates
- Whatever your session runs at
- Latency
- 0 samples at every setting
- Freq
- 40 to 300 Hz (120 Hz by default, at the knob's centre): below it the stereo side is removed through a 24 dB-per-octave crossover, -6 dB at the corner; the centre is untouched from 20 Hz to 18 kHz, within 0.1 dB
- Quick-set keys
- CLUB 150 Hz, VINYL 120 Hz, MASTER 100 Hz
- Amount
- 0 to 100 % of the low stereo side removed (100 % by default); 50 % halves it
- Width
- 0 to 150 % on the stereo side above FREQ (100 % by default leaves it untouched); 150 % lifts it 3.5 dB, 0 % makes the top mono
- Keep Level
- On by default: the centre below FREQ gets back the energy the sides carried, up to +12 dB, never lifting the peaks more than 1 dB past the input's; the top's level kept through WIDTH
- Listening keys
- MONO CHECK (the whole output in mono, ENGAGE off too) and SOLO REMOVED (only what is taken out); never saved
- Correlation meter
- LOW IN and LOW OUT (below FREQ) and FULL OUT, from -1 to +1
- Output
- A linked safety ceiling: never past 0 dBFS, and a mono low end stays mono
- Presets
- 13 factory presets; your own as .bassmonopreset files
- Tail
- Reported to your DAW: 0.2 s
- Window
- 960 x 600 at 100 %, resizable from 75 to 200 %
- MIDI
- MIDI Learn from any controller routed to the track
- Licence
- 5 computers per copy you buy. Unlock with your email and a code we email you. Checks in now and then and works offline in between.
- Internet
- Needed once to unlock, then for the occasional check-in
90Day money-back guarantee
Our guarantee
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90-day money-back guarantee
Not for you? Email contact@voxsamples.com within 90 days for a full refund.
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5 computers per copy
Use it on up to five of your own computers per copy you buy, and move it yourself from the plugin's Licence menu.
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Lifetime updates
Every future update and upgrade of Sumo, included.
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Platinum priority support
A real person at contact@voxsamples.com, first in line.
Try Sumo free
The whole plugin, with the same sound as the full version and no time limit. It goes silent for a moment every few seconds; the full version never does.
Windows and macOS installers in one download. Like what you hear? Get the full version on this page, with a 90-day money-back guarantee.
Questions
How do I make my bass mono?
Put Sumo on the bass, the 808, a wide pad or the master. The default, Mono Bass 120, already makes everything below 120 Hz mono and leaves the highs as they are. Press MONO CHECK and switch ENGAGE off and on to hear the bass thin out without Sumo and stay solid with it, then switch MONO CHECK off before you export.
What frequency should I make mono?
Most guides put the corner between about 100 and 150 Hz: CLUB sets 150 Hz, VINYL 120 Hz and MASTER 100 Hz. To make only the sub mono, try Bass / Sub Only (60 Hz); for a wide pad whose low-mids wander, Wide / Pad Bottom Clean goes up to 250 Hz. SOLO REMOVED lets you hear what each setting takes out.
Should bass be mono?
Below about 100 to 150 Hz, usually yes. Many club systems play the bass in mono, a vinyl cut needs a centred low end, and phones and one-speaker boxes sum to mono anyway, where a wide low end can thin out or cancel. Above the corner, keep the width: Sumo leaves it as it is, or widens it with WIDTH.
Is Sumo a mono maker for bass?
Yes, that is its one job: everything below the frequency you choose goes to the centre, everything above keeps its width, and KEEP LEVEL holds the level a plain mono cut would lose. MONO CHECK, SOLO REMOVED and the correlation meter show you what changed.
Will it make my bass quieter?
Not with KEEP LEVEL on, the default: the centre gets back the energy the sides carried, so a wide bass keeps its level in stereo and gets fuller in mono. Switch KEEP LEVEL off for a plain side cut, and a wide bass comes out quieter.
Does it add latency?
No: 0 samples at every setting, so it lines up with every other track and you can use it while tracking.
Does it work in my DAW?
Any 64-bit DAW that loads VST3, AU or AAX plug-ins, on Windows 7 SP1 or later or macOS 10.13 or later. There is no standalone app.
How many computers can I use it on?
Up to five of your own for each copy you buy. To move it, deactivate it in the plugin on the old computer and unlock it on the new one.
Does it need the internet?
Once, to unlock it with the code we email you. After that it checks in now and then and works offline in between.
Is there a manual?
Yes. The full manual explains every control, every preset and the menus, with tips. It opens from the help key (?) in the plugin's top bar, and lives at https://voxsamples.com/sumo-bass-mono-effect-manual.
What if it's not for me?
Request a refund from your account within 90 days.
Founder's Story
"When COVID hit, I finally had time to dive into music production—only to discover I was missing the right tools. The plugins I tried were clunky, overloaded with unnecessary features, and killed my vibe with endless tweaking. I knew there had to be a better way.
So, with my engineering background, I started making free and simple audio plugins for my producer friends. They loved them! That’s when I set out on a mission to create plugins that save you time, streamline your workflow, and keep your creativity flowing."
- Ryan Svensson (Founder & CEO)
A low end that holds up. Everywhere.
Mono below the corner you choose, the highs wide or wider, the level kept, and every change in front of you: at zero latency.
$42.55 AUDNormaler Preis $141.86 AUD70% off
- 90-day money back
- Five computers
- Lifetime updates
Pairs with
Sumo Bass Mono Effect
$42.55 AUDNormaler Preis $141.86 AUD70% off