Slab - Plate Reverb
A plate reverb you can play
$0.99
A sheet of steel, suspended in a frame, vibrating under everything you play. 25,000 ways to ring, a swell foot that keeps building, and a felt damper that stops it.
Slab is a physically modelled steel plate reverb. Not a room pretending to be a plate. Not an impulse response. A sheet of steel the size of a door - 25,000 resonant modes, all worked out at once, under everything you play.
It's a lot of metal for 99¢.
LET IT RING
Hold the SWELL foot and the reverb keeps building. Every note adds more energy to the plate. Keep playing and the sound gets bigger, then bigger, then completely out of hand. There is no reason to stop. So don't.
DAMP IT
Real plate reverbs have a damper. Slab does too. Hit DAMP and a felt pad drops onto the steel, choking the vibration almost instantly. It's not a fake decay control - the plate stops because something stopped it.
PICK YOUR PICKUPS
• STEREO - twin pickups on opposite sides of the plate for a wide, moving image.
• MONO - one pickup, like the original single-output designs.
Same plate, different perspective.
AND THE KNIFE SWITCH
Throw it to drive the signal into the plate through a measured amp stage - warm, dark and genuinely dirty when you dig in.
THE CONTROLS
• DECAY - how long the steel keeps moving (0.3-10 s).
• TONE - the damper's resting position, from lifted-and-bright to pressed-and-dark.
• PREDELAY - the gap before the plate speaks.
• MIX - a host parameter that adjusts the plate level around the dry signal.
PERFORMANCE MODE
Open Help and enable Performance Mode for an alternative plate sound that uses less processing power. The original physical model remains the default.
WORKS EVERYWHERE
• AUv3 plug-in for GarageBand, Logic Pro, AUM, Cubasis and other AUv3 hosts on iPad and iPhone
• Standalone app - plug in and play, no DAW needed
• MIDI control in standalone; parameter automation in compatible hosts
• One purchase covers iPad, iPhone and the Mac app, with AUv3 support in compatible hosts.
A real plate is enormous, heavy, and hungry for maintenance. Slab is a few megabytes.
Added optional Performance Mode in Help: an alternative plate reverb that uses less processing power. The physical model remains the default. Improved internal headroom so long reverb tails can build with less internal saturation.
The developer, Joshua Rideout, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Joshua Rideout
- Size
- 41.1 MB
- Category
- Music
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 11.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Joshua Rideout
