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Compact black Bluetooth 5.4 receiver with LCD screen and RCA, AUX, optical, USB ports

KAIY C37 Bluetooth 5.4 Receiver, 3-in-1 Outputs, USB 64 GB, Black

SKU CH-S5VY-6P4G1

A Bluetooth 5.4 audio receiver adds wireless streaming to any wired stereo through optical, RCA or AUX outputs and plays files directly from a 64 GB USB drive

  • Audio channels2
  • Power supply5 V DC
  • Size and weight1.8 in × 3 in × 3.54 in
  • Product colorBlack
  • Key featuresHome stereo bluetooth receiver
  • Upgrade legacy systems with Bluetooth 5.4 streaming
  • Connect 99% of gear via RCA, AUX, Optical
  • Play USB flash drives up to 64 GB directly
  • Stable wireless range reaches 33 ft indoors
  • LCD screen shows volume, mode and status

Modernise Any Wired System

The KAIY C37 adds Bluetooth 5.4 to any amplifier or speaker set that only has wired inputs. It accepts streamed audio from a phone, tablet or laptop and also plays files directly from a USB flash drive up to 64 GB. No app or network configuration is required.

Three Output Choices Decide Compatibility

The unit provides RCA, 3.5 mm AUX and optical ports so it fits 99 percent of existing stereo equipment. If your amplifier lacks one of these three connectors the adapter cannot be used without an extra cable or converter.

Stable Playback Across a Room

Bluetooth 5.4 keeps the link solid up to 33 ft away through walls and furniture. The 5 V USB power supply runs the receiver continuously without battery drain so music plays uninterrupted for hours.

How it compares

Measured against everything we stock in Wi-Fi & Bluetooth Audio Devices, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 90% of the 297 comparable items (median $63.99).

Specifications

Product
Brand nameKAIY
Model nameC37
Part numberC36
Product colorBlack
Audio & video
Audio channels2
Power
Power supply5 V DC
Size & build
Size and weight1.8 in × 3 in × 3.54 in
More details
Remote controllerNo

Questions about this item

What does the 33 ft Bluetooth 5.4 range mean when the receiver is placed in a typical living room?

The 33 ft figure is the open-air maximum; walls and furniture will reduce the practical distance, but Bluetooth 5.4 keeps the link stable across most average rooms without drop-outs.

How does the optical output limit the audio formats I can send to my amplifier?

The optical port carries two-channel PCM stereo; it does not pass multichannel bitstreams such as Dolby Digital or DTS, so the amplifier receives a standard hi-fi stereo signal.

What physical space and power does the C37 need to sit on my equipment rack?

The unit measures 1.8 in high, 3 in wide and 3.54 in deep and runs from a 5 V DC supply, so it fits on a standard shelf and only requires a USB-style power adapter.

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