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Denon Home 350: wake a speaker known to be in Deep Standby

Denon Home 350: wake a speaker known to be in Deep Standby. Observe the actual response before reporting an outcome.

Manufacturer-documented Reviewed 2026-11-09 · Revision 1

Follow these checks in Audio Fix →

When this guide applies

Known standby with mains connected; no unplug/replug cycle.

Connection scope: Bluetooth. Symptom: Power-on or automatic standby isn’t working.

This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.

If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.

Checks and possible outcomes

Start at step-0. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.

step-0

Is mains connected and Deep Standby the known state?

An unlit LED could also mean disconnected power; do not guess during an update.

Look for: Confirm the stated prerequisite or observation; unknown is not a fault diagnosis.

  • Manufacturer-documented Denon Home 350 EU owner manual ↗pp.6,9–10,14–18,41 — HEOS control needs a home network and phone WiFi. Top controls appear when a hand approaches; brief volume and playback controls differ from five-second Deep Standby. Deep Standby wakes with any brief button operation.No Alexa assumption, network reset or five-second hold. · Source checked 2026-11-09

step-1

Is the speaker idle with no active playback?

This is a standby wake check, not interruption of a running stream.

Look for: Confirm the stated prerequisite or observation; unknown is not a fault diagnosis.

  • Manufacturer-documented Denon Home 350 EU owner manual ↗pp.6,9–10,14–18,41 — HEOS control needs a home network and phone WiFi. Top controls appear when a hand approaches; brief volume and playback controls differ from five-second Deep Standby. Deep Standby wakes with any brief button operation.No Alexa assumption, network reset or five-second hold. · Source checked 2026-11-09

step-2

Briefly operate a top-panel control

Any button can wake Deep Standby. Do not hold Play/Pause for five seconds; that requests Deep Standby instead.

Look for: Perform only the stated check, then confirm whether it could be completed.

  • Manufacturer-documented Denon Home 350 EU owner manual ↗pp.6,9–10,14–18,41 — HEOS control needs a home network and phone WiFi. Top controls appear when a hand approaches; brief volume and playback controls differ from five-second Deep Standby. Deep Standby wakes with any brief button operation.No Alexa assumption, network reset or five-second hold. · Source checked 2026-11-09

step-3

Does the speaker wake and expose normal controls?

Reconnect the intended source separately; wake does not prove a media route.

Look for: Confirm the stated prerequisite or observation; unknown is not a fault diagnosis.

  • Manufacturer-documented Denon Home 350 EU owner manual ↗pp.6,9–10,14–18,41 — HEOS control needs a home network and phone WiFi. Top controls appear when a hand approaches; brief volume and playback controls differ from five-second Deep Standby. Deep Standby wakes with any brief button operation.No Alexa assumption, network reset or five-second hold. · Source checked 2026-11-09

Possible result

Checks completed — report your outcome

Completion does not automatically mean solved. Report what actually happened: solved, partly helped, did not help or could not follow. No Audio Review physical test is claimed.

steps completed

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

    Possible result

    Keep the observation for manufacturer support

    These steps did not establish a working setup. Keep the exact model, source, software and last observed response for support. No hardware or firmware defect is diagnosed.

    next support

    Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

      Possible result

      A required observation is unknown

      Confirm the exact model and linked instructions before continuing. Do not guess the state of a control, connection or update.

      insufficient data

      Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

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