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UGREEN 55545 Bluetooth 6.0 LDAC AUX/RCA Receiver, 15H

Rs. 3,450.00 Rs. 4,399.00
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Crystal Sound
Seamless Streaming
Low Latency
Wide Compatibility
High-Res Audio
BLUETOOTH 6.0 • LDAC • HI-RES WIRELESS

UGREEN 55545 Bluetooth 6.0 LDAC AUX/RCA Receiver, 15H

Overview

UGREEN 55545 is a rechargeable Bluetooth 6.0 receiver for streaming from a phone, tablet or computer to an existing stereo, amplifier, wired headset or powered speaker through 3.5mm or RCA. This shopper guide reconciles the exact live media with UGREEN-owned sources so direction, version, codec, call, battery and compatibility claims stay revision-specific.

Bluetooth 6.0SKU 55545Bluetooth Hi-Res ReceiverReceiver only
UGREEN 55545 UGREEN 55545 receiver with 3.5mm and RCA cables
UGREEN 55545 receiver with 3.5mm and RCA cables

Key features

Exact role

a rechargeable Bluetooth 6.0 receiver for streaming from a phone, tablet or computer to an existing stereo, amplifier, wired headset or powered speaker through 3.5mm or RCA.

Audio path

A compatible Bluetooth source sends audio to SKU 55545. The unit decodes it and provides analogue output through 3.5mm or red/white RCA. It is not a transmitter for Bluetooth headphones.

Codec boundary

LDAC, AAC and SBC are exact. LDAC up to 24-bit/96kHz requires a source that supports and enables LDAC; iPhone uses AAC or SBC. aptX is explicitly absent from exact media.

Power design

Up to 15 hours playback under stated conditions. A conflicting ten-hour regional bullet was rejected because exact media and the exact UGREEN US page agree on 15 hours. USB-C charging, about 2 hours to full, and use while charging. A charger is not listed in the package.

Audio direction and connector roles

A compatible Bluetooth source sends audio to SKU 55545. The unit decodes it and provides analogue output through 3.5mm or red/white RCA. It is not a transmitter for Bluetooth headphones.

Connector rule: a source/output must feed a destination/input. USB power, USB host data, analogue AUX and Bluetooth radio roles are separate even when one enclosure handles several of them.

Start safely: set the correct mode, select the target input and lower every volume control before testing.

UGREEN 55545 Supported source and powered-audio destination roles
Supported source and powered-audio destination roles

Sound, codecs, calls and latency

Codecs

LDAC, AAC and SBC are exact. LDAC up to 24-bit/96kHz requires a source that supports and enables LDAC; iPhone uses AAC or SBC. aptX is explicitly absent from exact media.

Latency

UGREEN describes lower latency but publishes no exact millisecond value or dedicated gaming codec. Do not market it as delay-free.

Microphone and calls

No built-in microphone or hands-free call path is listed. A wired headset connected to the output receives audio only; its boom microphone is not returned to the phone.

Real-world fidelity

Source file, negotiated codec, radio conditions, analogue cable, amplifier and speakers/headphones all affect the result. A newer Bluetooth number is not automatically higher sound quality.

UGREEN 55545 LDAC, AAC and SBC codec artwork
LDAC, AAC and SBC codec artwork

Use scenarios

Scenario 1

LDAC music from a compatible Android player to a home amplifier.

Scenario 2

AAC playback from iPhone to powered speakers.

Scenario 3

Sharing one stereo between two paired source phones.

Scenario 4

Long listening sessions while connected to USB-C power.

Scenario 5

Adding Bluetooth reception to legacy 3.5mm or RCA audio gear.

UGREEN 55545 Home-speaker listening scenario
Home-speaker listening scenario

Setup and usability guidance

  1. Step 1: Charge the receiver with USB-C.
  2. Step 2: Connect 3.5mm or RCA output to a line/AUX input and select it.
  3. Step 3: Pair the first phone from Bluetooth settings and test at low volume.
  4. Step 4: Pair a second phone only after the first connection is stable.
  5. Step 5: For LDAC, enable it on a compatible Android/source device and confirm the active codec in source settings.

Usability rule: establish one clean path first. Add a second source, listener, output or peripheral only after the first works reliably.

Controls

The multifunction button manages power and pairing. Source selection is practical rather than mixed: pause one phone, then start the other.

Second-device behaviour

Two phones can stay paired, but only one can play at a time. Pause the active source before starting audio on the other.

Recovery

If a saved phone will not reconnect, pause/disconnect the other phone, forget the receiver on both sources, power-cycle it and pair the desired source first.

UGREEN 55545 Dual-source pairing behaviour
Dual-source pairing behaviour

Compatible devices and systems

Verified class: Bluetooth-audio phones, tablets and computers as sources; home stereos, amplifiers, powered speakers, car AUX systems and wired headphones with 3.5mm or RCA line-level connectivity.

  • Match the operating-system/audio profile and connector role, not only the Bluetooth logo.
  • Confirm whether you need programme audio, microphone return, peripheral data or file transfer; these use different profiles.
  • For AUX/RCA products, confirm the destination is a line-level input and already has its own amplifier.
  • For PC adapters, verify driver requirements and disable a competing built-in Bluetooth radio.
  • For two-way products, confirm that the chosen TX or RX mode matches the wired device.
UGREEN 55545 Published long-distance connection example
Published long-distance connection example

What this product does

  • Receives Bluetooth audio from a compatible source.
  • Outputs analogue audio to the stated 3.5mm and/or RCA line input.
  • Supports only the call, control and source-count behaviour documented for this revision.
  • Reconnects to a saved compatible source when powered and available.
  • Modernises existing audio equipment without replacing its amplifier or speakers.

What this product does not do

  • receiver only; no Bluetooth-headphone transmission, aptX, microphone/calls, audio mixing, optical/coaxial audio or water-resistance rating; LDAC is not available from every source.
  • Does not guarantee uninterrupted wireless service through metal, walls, crowds or heavy 2.4GHz interference.
  • Does not repair a damaged source, USB port, AUX socket, amplifier or speaker.
  • Does not make a connector compatible merely because it fits physically.
  • Does not prove ANC, aptX, LDAC, multipoint or microphone return from the Bluetooth version number alone.

What to do

Check the label

Confirm SKU, model and stored revision on the product or box before relying on a specification.

Begin with one endpoint

Pair and test one path before adding any supported second device or output.

Lower volume first

Protect hearing and speakers when changing mode, output, codec, call profile or device.

Keep connections dry

Inspect USB and audio plugs, remove debris without metal tools and dry completely before power.

Use official drivers/manuals

Use the exact CM/BT model instructions; related UGREEN revisions can use different buttons and radios.

Pause before switching

When two sources are connected, pause the current programme before starting the other.

What not to do

Do not infer features

Bluetooth 5.x/6.0 alone does not establish codec, ANC, microphone, multipoint or delay.

Do not force plugs

Stop if a connector does not align; check port type, direction, damage and case clearance.

Do not use speaker-level output

AUX/RCA receiver inputs are line-level; passive speakers still need an amplifier.

Do not pair while moving

Configure car and aircraft audio before movement and follow local/crew instructions.

Do not charge damaged cells

Stop for swelling, leakage, odour or abnormal heat and seek proper battery disposal.

Do not borrow reset timing

Sibling models and revisions often use different hold durations and indicators.

Battery, charging and realistic runtime

Battery/power: Up to 15 hours playback under stated conditions. A conflicting ten-hour regional bullet was rejected because exact media and the exact UGREEN US page agree on 15 hours.

Charging/connection: USB-C charging, about 2 hours to full, and use while charging. A charger is not listed in the package.

  • Published runtime is normally a controlled maximum; volume, calls, codec, temperature, range and battery age can shorten it.
  • USB-powered models have no reserve runtime and stop when vehicle/computer power stops.
  • Use compliant, undamaged power sources and disconnect any product that becomes unusually hot.
  • Do not leave rechargeable products empty for months; follow the exact manual for long-term storage.
UGREEN 55545 Up to 15-hour battery-life guide
Up to 15-hour battery-life guide

Warnings and limitations

  • Hearing: begin at low volume, limit exposure and stop if you notice discomfort or ringing. Bluetooth features and noise processing are not hearing protection.
  • Battery: never crush, puncture, short, burn or charge a swollen, leaking, wet or unusually hot rechargeable product. USB-powered models still require a sound, compliant 5V source.
  • Aircraft: follow crew instructions, use only permitted headphone outputs and keep wireless devices off whenever directed. Carry lithium products in accordance with airline rules.
  • Driving: pair, mount, select sources and set volume while parked. Hands-free calling does not remove attention or legal responsibilities.
  • Water: no exact product here has a verified IP rating. Keep adapters, plugs and charging ports dry; never connect power while damp.
  • Heat and storage: do not leave the product on a hot dashboard, near a heater or in direct sun. Keep small adapters and cables away from children and pets.
  • Audio ports: connect only to the stated headphone/AUX line-level role. Never connect a 3.5mm/RCA port to mains, passive-speaker output or an unknown industrial signal.

Troubleshooting and reset

No pairing

Bring devices close, verify power/mode, disconnect competing saved devices and pair one endpoint first.

Connected but silent

Check source playback, OS output, TX/RX direction, AUX input selection, cable seating and both volume controls.

Audio but no microphone

No built-in microphone or hands-free call path is listed. A wired headset connected to the output receives audio only; its boom microphone is not returned to the phone. Confirm the call app input and permissions only where a microphone path is documented.

Drop-outs

Reduce distance and metal/body obstruction, move from crowded 2.4GHz radios and test one connection at a time.

Delay

Compare with a wired path; no unstated codec or Bluetooth version can remove all source and endpoint buffering.

Exact reset path

If a saved phone will not reconnect, pause/disconnect the other phone, forget the receiver on both sources, power-cycle it and pair the desired source first.

Technical specifications

Product UGREEN Bluetooth Hi-Res audio receiver
SKU / colour 55545 / black
Bluetooth version 6.0
Wireless role Receiver only
Codecs LDAC, AAC and SBC; no aptX
LDAC ceiling Up to 24-bit/96kHz with a compatible source
Audio outputs 3.5mm AUX and stereo RCA
Simultaneous sources Two paired; one programme at a time
Runtime Up to 15 hours
Charging USB-C; about 2 hours; use while charging
Listed range Up to 10m in open conditions
Microphone Not listed / no call-return path

Listed ranges and runtimes are qualified maxima in suitable conditions, not universal guarantees.

Package contents

Package: Bluetooth receiver, 1m USB-C charging cable, 1m 3.5mm audio cable and manual; RCA cable and charger are not included.

Pre-purchase checklist

  • Confirm the exact SKU/revision on the sealed product.
  • Confirm TX, RX or Windows-host direction.
  • Confirm every wired input/output and required power source.
  • Confirm call/microphone, codec and second-device needs separately.
  • Check whether any cable, charger or flight adapter you require is actually listed.

Product-specific FAQ

What exactly is UGREEN 55545?

It is a rechargeable Bluetooth 6.0 receiver for streaming from a phone, tablet or computer to an existing stereo, amplifier, wired headset or powered speaker through 3.5mm or RCA.

What does this receiver connect to?

A compatible Bluetooth source sends audio to SKU 55545. The unit decodes it and provides analogue output through 3.5mm or red/white RCA. It is not a transmitter for Bluetooth headphones.

Which codecs does SKU 55545 support?

LDAC, AAC and SBC are exact. LDAC up to 24-bit/96kHz requires a source that supports and enables LDAC; iPhone uses AAC or SBC. aptX is explicitly absent from exact media.

Is low latency guaranteed?

UGREEN describes lower latency but publishes no exact millisecond value or dedicated gaming codec. Do not market it as delay-free.

Do microphone and calls work?

No built-in microphone or hands-free call path is listed. A wired headset connected to the output receives audio only; its boom microphone is not returned to the phone.

Can two phones or outputs be used?

Two phones can stay paired, but only one can play at a time. Pause the active source before starting audio on the other.

What battery life or power does it use?

Up to 15 hours playback under stated conditions. A conflicting ten-hour regional bullet was rejected because exact media and the exact UGREEN US page agree on 15 hours. USB-C charging, about 2 hours to full, and use while charging. A charger is not listed in the package.

Which devices and systems are compatible?

Bluetooth-audio phones, tablets and computers as sources; home stereos, amplifiers, powered speakers, car AUX systems and wired headphones with 3.5mm or RCA line-level connectivity.

What should I do if pairing fails?

If a saved phone will not reconnect, pause/disconnect the other phone, forget the receiver on both sources, power-cycle it and pair the desired source first.

What is in the package?

Bluetooth receiver, 1m USB-C charging cable, 1m 3.5mm audio cable and manual; RCA cable and charger are not included

What should it not be used for?

receiver only; no Bluetooth-headphone transmission, aptX, microphone/calls, audio mixing, optical/coaxial audio or water-resistance rating; LDAC is not available from every source.

Exact-SKU research and media reconciliation

Research method: exact live Shopify status, description and every stored image were compared with exact-SKU UGREEN regional pages, UGREEN manuals/support and model mappings. Sibling and later-revision features were excluded when they conflicted.

Media decision: Exact artwork confirms receiver-only direction, Bluetooth 6.0, LDAC/AAC/SBC, no aptX, dual pairing and 15-hour battery. The exact UGREEN US page confirms 24-bit/96kHz LDAC, two-hour charging, use while charging and package exclusions.

Source records: UGREEN source 1 · UGREEN source 2

UGREEN 55545 Exact Bluetooth 6.0 revision artwork
Exact Bluetooth 6.0 revision artwork

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  • 5 stars: 1 (50%)
  • 4 stars: 1 (50%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Ravi Sankar

Music quality and battery backup excellent

Ravi Sankar review photo Ravi Sankar review photo
T
Tushar Kumar

Things to consider - iphone does not support LDAC and if your Android does not have LDAC, then it will use AAC because this model does not support APTX codecs. But overall it is a durable and quality product without any extra fuss. Working great!
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