For Pascal Audio / Blaze multi-zone amplifiers
Automatic scheduling for multi-zone amplifiers
The ESP Audio Scheduler switches your amplifier's zones on and off, fades volume, and swaps inputs on a weekly schedule — entirely on its own. No PC, no app, no cloud subscription. Configure it once from any browser, then it just runs.
Built for installers who don't want a callback
If you install or run a Pascal Audio / Blaze multi-zone amplifier, the ESP Audio Scheduler is the piece that turns a manually-operated system into one that runs itself — a small box on the same network as the amp, no ongoing maintenance.
Retail & hospitality
Background music that turns on when the doors open and off when the last shift locks up — every zone, every day, without anyone touching a switch.
Gyms & studios
Different volume and input per class block or time of day, synced across every zone in the building.
Offices & lobbies
Quiet paging during business hours, silence after hours, fading in and out instead of hard cuts.
How it works
Connect
Plug the scheduler into the same network as your amplifier. PoE powers it over the same cable; no PoE switch also works with a 5V USB supply.
Configure in the browser
Open the built-in web UI, let it auto-discover your amplifier, and build your weekly schedule: time, days, zones, volume, input.
It runs itself
The device keeps its own clock via NTP and fires every event from then on — no computer, no app, no cloud. It even updates its own firmware.
Everything you need, nothing you don't
Weekly schedule, up to 100 events
Any weekday combination, minute-precise trigger times.
Per-zone volume & input
Set the target volume and source per zone, per event.
Smooth fades, not hard cuts
Separate fade-in, fade-out and volume-change ramps.
Automatic amplifier discovery
Finds Pascal Audio / Blaze amps on the network via mDNS.
Zone colors
Automatic color coding for fast orientation across views.
CSV export & import
Back up or restore the entire schedule as a spreadsheet.
NTP clock
Sets itself from the internet, DST included — or set it manually if there's no internet.
Self-updating firmware
Automatic OTA updates with rollback protection if one fails to boot.
The web UI
Runs entirely on the device — open it from a phone, tablet, or PC on the same network.
List view
Every event at a glance, filterable by zone, with live status.
Event editor
Time, weekdays, zones, volume and input — all in one place.
Zones
Live volume readouts and color coding, read straight from the amp.
Conflict detection
Overlapping events are flagged before they can silently overwrite each other.
Technical data
| Hardware | ESP32 module with Ethernet (Olimex ESP32-POE-ISO) |
|---|---|
| Power | PoE IEEE 802.3af or 5V via USB |
| Network | Ethernet 10/100 Mbit/s, IPv4; DHCP, static IP, or DHCP-fallback address |
| Amplifier protocol | Pascal Audio "Open API for Installers", TCP port 7621; mDNS discovery |
| Zones | Up to 8 (A–H), detected automatically per amplifier model |
| Events | Up to 100, minute-precise, weekday-based |
| Time base | NTP, incl. daylight-saving; manual clock as fallback |
| Updates | OTA via HTTPS (GitHub releases), automatic rollback on failed boot |
Full details, setup and troubleshooting are in the manual.
Frequently asked questions
Does Blaze PowerZone Control support scheduling?
No — Blaze's own PowerZone Control app (and Pascal's ZoneController) handle DSP configuration, zone setup and live wall-panel volume control, but neither includes time-based weekly scheduling. The ESP Audio Scheduler adds that missing piece on top of your existing amplifier, no replacement hardware needed.
How do I automatically turn off background music at closing time?
Create an event in the web UI with your closing time, select the zones, switch them off, and set a fade-out time. From then on it fires automatically every matching weekday — no computer or app needs to stay open.
Can I schedule volume changes on a Pascal amplifier?
Yes. Each event can set a target volume per zone in addition to on/off, with its own fade time, so volume changes ramp smoothly instead of jumping.
What happens if the scheduler loses power or network?
It won't fire any events without a valid clock — if power or network drops and NTP can't sync, it deliberately stays silent instead of switching at the wrong time, then resumes on schedule automatically once time syncs again.
Ready to stop switching zones by hand?
€XX
Price shown on the eBay listing. Includes the flashed device and the full manual.