---
product_id: 194520609
title: "BTR3K"
brand: "fiio"
price: "₱347"
currency: PHP
in_stock: false
reviews_count: 13
url: https://www.desertcart.ph/products/194520609-btr3k
store_origin: PH
region: Philippines
---

# Bluetooth 5.0 + app control Dual AK4377A DAC for pristine sound 11-hour continuous playback BTR3K

**Brand:** fiio
**Price:** ₱347
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Elevate Every Beat — Wireless Audiophile Power in Your Pocket

## Quick Answers

- **What is this?** BTR3K by fiio
- **How much does it cost?** ₱347 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/194520609-btr3k)

## Best For

- fiio enthusiasts

## Why This Product

- Trusted fiio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Battery Life:** Enjoy up to 11 hours of uninterrupted wireless listening—perfect for long workdays, commutes, or weekend escapes without the FOMO of low power.
- • **Customizable Audio Experience:** Fine-tune your sound with 8 DAC lowpass filters, a 10-band EQ, and channel balance controls via the intuitive FiiO Music app—because your ears deserve personalized perfection.
- • **Studio-Quality Sound on the Go:** Experience near-audiophile clarity with dual independent DACs delivering rich, detailed audio through your favorite wired headphones or speakers.
- • **Seamless Bluetooth 5.0 Connectivity:** Effortlessly pair with smartphones, PCs, or car audio systems using the latest Bluetooth 5.0 tech supporting aptX HD, LDAC, and aptX LL codecs for crystal-clear wireless sound.
- • **Compact Powerhouse with Smart Controls:** Sleek Type-C USB DAC functionality, in-line mic and playback controls, plus Siri voice activation make this tiny titan your ultimate audio sidekick.

## Overview

The FiiO BTR3K is a premium Bluetooth 5.0 receiver and headphone amplifier featuring dual AK4377A DACs for studio-quality sound. It supports high-resolution codecs like aptX HD and LDAC, offers both balanced 2.5mm and single-ended 3.5mm outputs, and delivers up to 11 hours of continuous playback. Controlled via the FiiO Music app, it provides customizable EQ, channel balance, and filter settings. Compact and robust, it includes a Type-C USB DAC function, in-line controls, and a built-in microphone, making it ideal for professionals seeking superior wireless audio performance with versatile device compatibility.

## Description

Buy FiiO BTR3K Receiver Amplifier Bluetooth Headphone Amp High Resolution Support aptX HD/aptX LL/LDAC for Car Audio/Home TV/Speaker/Smartphones/PC (3.5mm/2.5mm Output): Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Near-Audiophile sound. Awesome build quality. - Dollar for dollar, the FiiO BTR3K has dramatically exceeded my every expectation! ...and I have reasonably high expectations... although not true audiophile. Oh, and it's sooo TINY. The build quality is amazing. Feels like a tiny little glass brick. I have this device paired to an LG V60 Android phone which fully supports all of the HD codecs like APTX HD and LDAC. I run the BTR3K in either APTX HD or LDAC (see below for a pro tip on getting this configured properly). Hanging off of this device are my 1more quad-driver, THX-certified in-ear headphones (best sound for the money, IMHO) with Comply foam ear tips for near-perfect comfort and sound isolation. Using the exact same headphones, the sound quality (especially in APTX HD or LDAC mode) rivals my portable USB DAC/Amp (a FiiO E18 Kunlun), maybe even exceeds it in terms of apparent clarity and soundstage. Of course, even in APTX HD mode, the DAC on this can only receive 48KHz, 24bit (essentially CD quality) data, so don't expect 96K levels of ultra-fine fidelity. That is just a limitation of Bluetooth bandwidth, not the BTR3K. As previously stated, the sound quality is amazing and, unless you are trying to drive really power-hungry cans, the volume levels are more than sufficient to cause hearing loss. A note here is that, unlike most Bluetooth 'headphones,' the volume control on these is completely independent of the source, at least on my LG. This allows you to run the BTR3K at lower volumes (raising the volume on the phone end) and conserve the battery life... which by the way is already amazing on its own! The included little holster is really well-made and allows you to clip it to your shirt to take full advantage of the built-in microphone. I am pretty sure that the BTR3K overrides the mic on my headphones. Just be advised that this little toy is HEAVY for its size and will drag down on your shirt collar. I place mine off to the side so that it is riding more on my shoulder/collarbone than dangling from my collar. That seems to work pretty well. PRO TIP #1 (see attached screen-shots): On Android 10 you need to modify your connection in Bluetooth settings (not the fancy developer-mode override, which requires a phone reboot every time anyway) to set the BTR3K Connection Type to 'Best Audio Quality.' This will give you APTX HD (if your phone or other source supports it) or LDAC. If your Android phone supports both APTX HD and LDAC, you will need to use the developer options to force LDAC if you want it. This is because Android prioritizes APTX HD over LDAC. You can tell which codec you are connecting through via the color of the little FiiO light on the BTR3K (when the source is actually playing). Yellow = APTX HD, Light Purple = LDAC. PRO TIP #2 (see attached screen-shots): If on Android, you absolutely should download the app called Neutralizer which allows you to set up each different headphone/connection combo to be as absolutely as 'true' to the music as your gear can handle. It uses a simple little hearing test, at various different frequencies, to allow you to literally 'dial in' the perfect balanced sound, regardless of how your headphones (or ears) were tuned from the factory. This is especially important as different codecs and DAC/Amp hardware can change the sound characteristics of your headphones A LOT. I have totally different profiles for my 1more's connected directly, via my USB DAC/Amp, and via the BTR3K. Same exact headphones. Three fairly different Neutralizer profiles. Sadly, I do not yet own a set of balanced headphones, so I can't speak to the fact the BTR3K has direct support for 2.5mm balanced headphone outputs driven by discreet DACs and Amps. I just have not been able to make myself spent the $1,500+ for a good set... yet. I do not doubt, however, that it can live up to that challenge. Just make sure that they are not too power-hungry. Anyway, hope this review helps. Happy Listening! - Matt
Review: If you're thinking about it, just get it. - I had a cheap USB/3.5mm Bluetooth pigtail for my car, it worked. This thing is so much more clear and powerful and LDAC / AptX support is amazing to have. Power and audio are well isolated. It has carmode which turns on and automatically connects when accessory is turned on. Fiio connect app has codec settings, EQ, carmode toggle, even turn off all the LEDs. Build quality is all metal and glass. Fiio knows audio, everything they make is quality.

## Features

- CSR8675 Bluetooth 5.0 receiver designed to deliver studio-quality sound through your ears WIRELESS - using your existing wired headphones, earphones or even speakers.
- For greater power independent Dual AK4377A DAC and detail resolution,the BTR3K features both balanced 2.5mm and single-ended 3.5mm outpts.
- Can be remotely controlled via FiiO Music app to switch channel balance,8 different DAC lowpass filter and 10-band EQ
- New Type-C connector with USB DAC functionality+11 hour of continuous pleasure at a full charge
- Bluetooth indicator light +Call up Siri in iOS+In-line Control(in headphones with CTIA controls, you can use the microphone as well as the play/pause, volume, and track selection controls)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B085XT3V3X |
| Additional Features | Microphone Included |
| Audio Output Mode | Stereo |
| Audio Output Type | Headphone, Speaker |
| Battery Weight | 15 Grams |
| Best Sellers Rank | #50,236 in Electronics ( See Top 100 in Electronics ) #83 in Headphone Amps |
| Brand | FiiO |
| Built-In Media | Cable |
| Color | Black |
| Compatible Devices | Smartphone, Speaker |
| Connectivity Technology | Wireless |
| Connector Type Used on Cable | Type-C |
| Control Method | App |
| Control Type | Volume Control |
| Controller Type | iOS |
| Customer Reviews | 4.4 out of 5 stars 1,461 Reviews |
| Item Type Name | amplifier |
| Item Weight | 24 Grams |
| Lithium Battery Weight | 2 Grams |
| Lithium-Battery Energy Content | 330 Watt Hours |
| Manufacturer | FiiO |
| Model Name | BTR3K |
| Number of Batteries | 1 Lithium Polymer batteries required. |
| Number of Channels | 8 |
| Number of Lithium-ion Cells | 1 |
| Rechargeable Battery Included | Yes |
| Special Feature | Microphone Included |
| Unit Count | 1.0 Count |
| Warranty Description | 2 years |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** FiiO
- **Color:** Black
- **Compatible Devices:** Smartphone, Speaker
- **Connectivity Technology:** Wireless
- **Connector Type:** USB Type-C
- **Controller Type:** iOS
- **Item Weight:** 24 Grams
- **Product Dimensions:** 2.28"D x 0.98"W x 0.43"H
- **Special Feature:** Microphone Included

## Images

![BTR3K - Image 1](https://m.media-amazon.com/images/I/71VsOYhuksL.jpg)
![BTR3K - Image 2](https://m.media-amazon.com/images/I/71unyxlwGRL.jpg)
![BTR3K - Image 3](https://m.media-amazon.com/images/I/715slngMdFL.jpg)
![BTR3K - Image 4](https://m.media-amazon.com/images/I/71TjCIcKKVL.jpg)
![BTR3K - Image 5](https://m.media-amazon.com/images/I/81S3k6KKbtL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Near-Audiophile sound. Awesome build quality.
*by M***E on January 3, 2021*

Dollar for dollar, the FiiO BTR3K has dramatically exceeded my every expectation! ...and I have reasonably high expectations... although not true audiophile. Oh, and it's sooo TINY. The build quality is amazing. Feels like a tiny little glass brick. I have this device paired to an LG V60 Android phone which fully supports all of the HD codecs like APTX HD and LDAC. I run the BTR3K in either APTX HD or LDAC (see below for a pro tip on getting this configured properly). Hanging off of this device are my 1more quad-driver, THX-certified in-ear headphones (best sound for the money, IMHO) with Comply foam ear tips for near-perfect comfort and sound isolation. Using the exact same headphones, the sound quality (especially in APTX HD or LDAC mode) rivals my portable USB DAC/Amp (a FiiO E18 Kunlun), maybe even exceeds it in terms of apparent clarity and soundstage. Of course, even in APTX HD mode, the DAC on this can only receive 48KHz, 24bit (essentially CD quality) data, so don't expect 96K levels of ultra-fine fidelity. That is just a limitation of Bluetooth bandwidth, not the BTR3K. As previously stated, the sound quality is amazing and, unless you are trying to drive really power-hungry cans, the volume levels are more than sufficient to cause hearing loss. A note here is that, unlike most Bluetooth 'headphones,' the volume control on these is completely independent of the source, at least on my LG. This allows you to run the BTR3K at lower volumes (raising the volume on the phone end) and conserve the battery life... which by the way is already amazing on its own! The included little holster is really well-made and allows you to clip it to your shirt to take full advantage of the built-in microphone. I am pretty sure that the BTR3K overrides the mic on my headphones. Just be advised that this little toy is HEAVY for its size and will drag down on your shirt collar. I place mine off to the side so that it is riding more on my shoulder/collarbone than dangling from my collar. That seems to work pretty well. PRO TIP #1 (see attached screen-shots): On Android 10 you need to modify your connection in Bluetooth settings (not the fancy developer-mode override, which requires a phone reboot every time anyway) to set the BTR3K Connection Type to 'Best Audio Quality.' This will give you APTX HD (if your phone or other source supports it) or LDAC. If your Android phone supports both APTX HD and LDAC, you will need to use the developer options to force LDAC if you want it. This is because Android prioritizes APTX HD over LDAC. You can tell which codec you are connecting through via the color of the little FiiO light on the BTR3K (when the source is actually playing). Yellow = APTX HD, Light Purple = LDAC. PRO TIP #2 (see attached screen-shots): If on Android, you absolutely should download the app called Neutralizer which allows you to set up each different headphone/connection combo to be as absolutely as 'true' to the music as your gear can handle. It uses a simple little hearing test, at various different frequencies, to allow you to literally 'dial in' the perfect balanced sound, regardless of how your headphones (or ears) were tuned from the factory. This is especially important as different codecs and DAC/Amp hardware can change the sound characteristics of your headphones A LOT. I have totally different profiles for my 1more's connected directly, via my USB DAC/Amp, and via the BTR3K. Same exact headphones. Three fairly different Neutralizer profiles. Sadly, I do not yet own a set of balanced headphones, so I can't speak to the fact the BTR3K has direct support for 2.5mm balanced headphone outputs driven by discreet DACs and Amps. I just have not been able to make myself spent the $1,500+ for a good set... yet. I do not doubt, however, that it can live up to that challenge. Just make sure that they are not too power-hungry. Anyway, hope this review helps. Happy Listening! - Matt

### ⭐⭐⭐⭐⭐ If you're thinking about it, just get it.
*by E***B on January 20, 2023*

I had a cheap USB/3.5mm Bluetooth pigtail for my car, it worked. This thing is so much more clear and powerful and LDAC / AptX support is amazing to have. Power and audio are well isolated. It has carmode which turns on and automatically connects when accessory is turned on. Fiio connect app has codec settings, EQ, carmode toggle, even turn off all the LEDs. Build quality is all metal and glass. Fiio knows audio, everything they make is quality.

### ⭐⭐⭐⭐ Supports TRRS + CTIA (tested with Beyerdynamic MMX 300) the mic works!
*by F***N on July 11, 2025*

Good battery life, supports headset connection (it even detects my microphone from my Beyerdynamic MMX 300 and uses it without jeopardizing hearing quality!). However, if you're not connecting a headset, the FiiO comes with a built-in microphone that sounds way worse than 64 kbps (absolute garbage built-in mic), way worse than the iPhone's built-in. The fact that you have to turn off the FiiO to make sure you're not recording with it when doing voice memos, is very annoying. There's no known way to blacklist the built-in mic aspect of it. If you do voice memos, don't forget to turn off FiiO. FiiO, if you're going to deliver a mic that is worse than the phone's default, don't deliver it at all (-1). The manual isn't clear with what the led flashings and colors mean, so I had to put two and two with the patterns myself and whether it's tied with what buttons I pressed.

## Frequently Bought Together

- FiiO BTR3K Receiver Amplifier Bluetooth Headphone Amp High Resolution Support aptX HD/aptX LL/LDAC for Car Audio/Home TV/Speaker/Smartphones/PC (3.5mm/2.5mm Output)
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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-06-21*