helder.kelder

kelder · cellar · KEL-der

A bass synth that keeps the low end clear.

Four layers of analog and vector, six-operator FM or plucked string over a dedicated sub, mono below the frequency you set, and effects that leave the bottom alone.

Try it free · macOSWindowsBuy · € 39

The trial is the whole plugin for 14 days. After that it keeps working but stops saving into your session until you unlock it. Prices include VAT.

Double Dutch · Kelder and Sfeer together for € 59. One code unlocks both.

Buy both · € 59
Vector morph on C2: layer A and the sub, and their alignment at the right.
The helder.kelder plugin window

What it does

Four layers, one bass.

Stack them for a bass that moves, or use one for a classic: a ladder-filter thud, a squelchy mono buzz, a slapped FM bass, a plucked upright.

A sub, and proof it is working.

A dedicated sub under the layers. The display shows when two of them cancel, and one click inverts the offender.

Mono where it matters.

Everything below a frequency you set goes to the center, so the low end holds on a club system. Above it, the stereo stays.

Effects that leave the fundamental alone.

The effects color the body and keep off the sub, unless you send it through them.

How buying works

  1. Try it first.

    The whole plugin for 14 days, in a real session. No account, no email.

  2. Buy.

    Your code comes by email within a minute, from Lemon Squeezy, who handle the payment.

  3. Paste the code into the plugin.

    It needs the internet that once. Up to five machines, and every 1.x update is free.

Formats

AU, VST3® and standalone · macOS and Windows · Logic Pro and Ableton Live tested

The price

€ 39 a plugin, or € 59 for Kelder and Sfeer together as Double Dutch. A version 2, if there is ever one, costs less if you own version 1.

Refunds

Changed your mind? Email me within 14 days, with no machine unlocked, and I refund it. After that, if it doesn’t work as described, I fix it, or refund it if I can’t. Refund policy

Support

By email, usually within a day, from the person who wrote it. The support page answers the usual questions.

Andy Evans

Built by a working musician.

I’m Andy. I make records in Haarlem, and I wrote kelder for my own sessions. I use it every week; that is where the updates come from. More about the workshop