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Small black Bluetooth 5.0 transmitter with USB plug, 3.5 mm and RCA ports

Tonstep

Tonstep GT90S Bluetooth 5.0 Transmitter 3.5mm RCA USB

SKU CH-6K9K-V415P

Adds Bluetooth 5.0 to any 3.5 mm or RCA audio source, streaming to wireless headphones or speakers up to 10 m / 33 ft with USB power

  • TypeBluetooth Adapter
  • ColorBlack
  • Bluetooth 5.0 delivers stable audio up to 10 m / 33 ft
  • Adds wireless streaming to non-Bluetooth TVs, PCs and MP3 players
  • Dual 3.5 mm and RCA inputs fit most audio sources
  • USB-powered plug-and-play with no driver installation required
  • Compact, lightweight design for easy portability

What this transmitter does

The Tonstep GT90S adds Bluetooth 5.0 streaming to any audio source that lacks it. Connect the 3.5 mm or RCA outputs of a TV, PC, MP3 player or DVD player and send sound wirelessly to Bluetooth headphones or speakers. The USB plug supplies power so no batteries or external adapters are required. Setup is driver-free and works immediately after pairing.

Connection options that decide fit

The adapter provides both a 3.5 mm auxiliary jack and stereo RCA sockets for the source device. If your equipment only offers optical or HDMI audio outputs this transmitter cannot connect to them. Bluetooth 5.0 handles the wireless link to the receiving headset or speaker using the A2DP profile for stereo audio.

Behaviour during extended use

Because the unit draws power continuously from a USB port it can stream indefinitely without recharge cycles. The Bluetooth 5.0 link maintains a stable connection up to 10 m or 33 ft in open space. Audio quality remains consistent over long sessions as there is no internal battery to degrade or thermal throttle.

Highlights

  • Bluetooth 5.0 delivers stable audio up to 10 m / 33 ft
  • Adds wireless streaming to non-Bluetooth TVs, PCs and MP3 players
  • Dual 3.5 mm and RCA inputs fit most audio sources
  • USB-powered plug-and-play with no driver installation required
  • Compact, lightweight design for easy portability

Specifications

BrandTonstep
Model23380113
TypeBluetooth Adapter
ColorBlack

Questions about this item

How far can the GT90S reliably stream audio to my Bluetooth headphones?

The transmitter uses Bluetooth 5.0 with a range of up to 10 metres or 33 feet, so you can move around the room without dropouts.

What does the Bluetooth 5.0 label actually mean for sound quality and latency?

Bluetooth 5.0 supports the A2DP profile for stereo audio, giving you stable, high-quality sound for music, movies and games without noticeable lag.

Which ports and cables do I need to connect this to my TV or PC?

The GT90S has a 3.5 mm aux jack and RCA sockets for audio input, plus a USB plug that powers the unit — no extra adapters or drivers required.

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