Using In-Store Audio Spots to Lift QSR Promo Sales: What the Data Shows

Quick-service brands already use sound to set the pace at the counter, in the dining room and at the drive-thru. The harder question is whether in-store audio spots can lift promo sales, and under what conditions. The evidence is uneven, but it is specific enough to act on.

Tempo Changes How Long Guests Stay

A 2024 field experiment in restaurants compared slow and fast tempo music. Guests on slow tempo lingered longest, the fast group left first, and bill sizes showed no gap.

A restaurant-music vendor, citing the same research, puts average stays at about 80 minutes under slow music and 57 under fast. Another 2024 paper reports bigger tabs under slow music, mostly from drinks and sweets. The findings conflict on bill size, so test rather than assume.

For a QSR, longer visits are not automatically good. Lunch and dinner peaks need tables and counter lanes to turn, so brisker playlists suit those blocks. Merienda and late-night blocks have more room for a calmer mix — and that is where to test whether add-on drinks rise.

Targeted Spots Can Move Unit Sales

An in-store radio network reaching roughly 5,000 stores let brands buy audio by time of day and location. Company data showed unit sales up 4% for an energy drink campaign and 7% for an isotonic drink.

Trade press quotes an average same-store sales lift of 15% to 20% from in-store audio. Campaign lengths typically fall between four and 12 weeks. One source is behind that average, so treat it as a hypothesis.

Not every test has worked. Nine of ten products in a 95-store test showed almost no sales response to in-store radio. Mailed circulars, by contrast, lifted discounted items in every case tested.

QSR-specific evidence is older. A 2018 study linked broadcast radio spots to a 23% rise in quick-service restaurant store traffic. It covered broadcast radio, not in-store audio, so use it as direction only.

The practical rule is simple: an audio spot needs a second touchpoint. Put the same item on the menu board, counter card or app, and compare trading in stores that air the spot with stores that do not.

Time Spots to the Calendar

Payday is the obvious hook, but measured Philippine lift for QSR payday promotions is limited, so treat it as a test. NIQ’s 2026 Philippine report describes shoppers timing purchases to payday and holding out for deals. A late-2025 survey found that close to half of Filipino households are trimming discretionary outlays, dining out among them.

Holiday demand follows a clearer curve. Kantar measured total FMCG spending about 7% above non-holiday months during the December 2022 to January 2023 peak, with food up 11%. Kantar also places the start of holiday buying in December, tied to 13th-month pay.

Afternoon snacking matters too. By one industry tally, 87% of Filipinos order snacks by delivery in the late afternoon. That makes merienda a strong slot for snack-bundle spots.

Control the Sound, Then Measure It

Staff choices can undercut the plan. A 2020 field experiment found that employees who picked the music leaned toward up-tempo, high-volume tracks, and earlier research links that intensity to shorter visits and lower sales. Lock playlists at head office by daypart, and let store managers choose only from approved lists.

Volume is a separate lever. Loud music speeds customer movement, which suits fast-food settings, while moderate levels stay audible without competing with conversation.

Takeaways for the Next Promo Cycle

Lunch (10:30–14:00) and dinner (17:00–21:00): run brisk, moderate playlists and schedule promo spots between tracks, not over order calls.

Breakfast and merienda: pair coffee and snack spots with the counter zone, and track drink add-ons against control stores.

Late night (21:00–23:59): test a calmer mix with one value-bundle spot before scaling it.

Paydays: run value and bundle spots through the days around the 15th and 30th, and measure each payday cycle separately.

December: start family-bundle spots as 13th-month pay arrives, then concentrate rotation in the peak weeks.

If you want to run this as a controlled test, WAVFlow6 NXT can schedule licensed music by daypart and store zone and air promo spots on the same timetable. That keeps test and control stores different only in the variable you are measuring.