Headphone amplifier with DAC
FiiO BTR3K Black

Product code: 105664
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AED 329
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Description

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Description

FiiO has introduced a new version of its compact Bluetooth receiver and headphone amplifier, the BTR3K. It is designed for those who are unsatisfied with the sound of wireless headphones and want to continue using their favorite in-ear monitors in a wireless format.

Inside the miniature body, it is equipped with the Qualcomm Bluetooth CSR8675 chip, providing support for all major codecs, including high-fidelity ones such as SBC, AAC, AptX, AptX HD, AptX Low Latency, and LDAC. Additionally, the model can simultaneously connect with two wireless audio sources. The built-in diodes on the FiiO BTR3K light up in different colors depending on the codec being used.

The dual digital-to-analog converter AK4377A is responsible for converting the digital signal to analog, and it features two outputs for headphones – a balanced 2.5mm and a regular 3.5mm. The voltage on the balanced output reaches 78mV when paired with a 32-ohm load.

The battery life lasts approximately 11 hours when using the AAC codec (Advanced Audio Coding, a multi-channel audio encoding algorithm that supports streaming). The USB-C port is not only used for charging but also for receiving audio signals in the 16-bit/48kHz PCM format (read more about the format in our blog article).

Features:

  • The model can simultaneously connect with two wireless audio sources.
  • The built-in diodes light up in different colors depending on the codec being used.
  • Two headphone outputs – a balanced 2.5mm and a regular 3.5mm.
  • Built-in omnidirectional microphone.
  • High-speed Bluetooth 5.0.
  • Approximate battery life on a single charge - up to 11 hours.
  • Battery level indication.

Package Contents:

  • Amplifier.
  • Charging cable.
  • Documentation.
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Characteristics

Characteristics

Brand
Headphone output
3.5mm jack, 2.5mm jack
Output connectors
USB-C
DAC chip

The chip used for digital-to-analog conversion

Glossary of terms
CSR8675
DAC bit depth, bits
16
Powered by USB
yes
Connecting to a computer via USB
yes
Built-in battery
yes
The lowest frequency, Hz
20
The highest frequency, kHz

The upper limit of the frequencies reproduced by the device. The human ear hears the standard frequency range: 20 Hz – 20000 Hz.

Glossary of terms
40
Bluetooth version

Bluetooth is a short-range wireless technology that allows you to connect headphones or portable speakers, a stereo system or a soundbar to your smartphone or laptop. For a certain version to work, both devices must support it. The versions differ in data transfer speed, power consumption, securing data transfer, anti-interference ability and range of connection.

Glossary of terms
5.0
Color
Form factor
portable
Input connectors
3.5mm jack, 2.5mm jack, USB-C
Internal DAC
yes
Material
plastic
Playback via USB
yes

Playing music files via USB

Словарь терминов
Circuit design
discrete

The circuit with transistors used.

Словарь терминов
Depth, mm
11
Height, mm
58
Width, mm
25
Weight, g
23.5
Service life, months
24
Warranty, months
12
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