bathROOMs by Hot Shower Audio: Free Bathroom Reverb Plugin
Five bathrooms, one surprisingly musical reverb
bathROOMs by Hot Shower Audio is a pay-what-you-want reverb plugin that can be downloaded for $0. Instead of presenting abstract halls and algorithm names, it builds its identity around five modeled bathroom spaces, each with a different reflective character.
The concept is playful, but the controls are practical enough for normal production work. You can change where the source sits in the room, alter the reflective surface, shape early slap and longer wash, darken or brighten the result and use built-in ducking to keep the dry signal forward.

The five room characters
bathROOMs includes five distinct spaces named Lavender, Porcelain, Cove, Greenhouse and Baldosa. The point is not to recreate one ideal studio chamber. Each room has its own reflections and tonal behaviour, giving producers several flavours that can range from tight and boxy to brighter, more open ambience.
This can be especially effective when a source needs believable short reflections rather than the enormous tail of a conventional hall reverb.
Controls that describe the sound clearly
Position changes the source relationship to the space, Surface adjusts reflective character, Slap emphasizes the early response, Wash controls the longer reverberant body and Temp shifts the tonal balance. The built-in ducker helps the reverb retreat while the source is active and return between phrases.
Where bathROOMs works well
- Vocals: add short reflective space without making the singer sound distant.
- Drums: create room energy around snares, claps and percussion.
- Guitars: introduce a small-room character that feels different from plates and halls.
- Synths: make very dry electronic sounds feel as if they occupy a physical space.
- Sound design: exaggerate slap and surface controls for deliberately unusual ambience.
Official bathROOMs walkthrough
Hot Shower Audio provides an official demonstration showing the room choices and the main controls in context. It is useful for hearing how much character changes before downloading the plugin.
A practical starting point
- Choose the room before changing several controls at once.
- Set Position and Surface until the early reflections fit the source.
- Add Wash only as far as the arrangement needs.
- Use the ducker on vocals, drums or rhythmic material when the reverb starts masking attacks.
- Level-match bypass and processed versions before deciding that more reverb is better.
Compatibility
Price: Pay what you want, from $0
macOS: VST3, AU and AAX, macOS 11 or newer
Windows: VST3, Windows 10 or newer
Developer: Hot Shower Audio
Why it stands out
The obvious hook is the bathroom theme, but bathROOMs avoids becoming a novelty plugin because its controls map to useful production decisions. Short rooms and early reflections are often harder to fake convincingly than giant cinematic tails, and this plugin gives those smaller spaces a dedicated workflow.
It is also refreshing to see a free reverb with an actual point of view. There are already enough plugins called Hall 01 to last several lifetimes.
Official Hot Shower Audio page



