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)
Condition: New
Checking for product changes
Buy Now, Pay Later
As low as
$11.67
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 4 left in stock, order soon!
Arrives
Sunday, Jul 6
Recently Viewed
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)
Brand: FiiO
Connectivity Technology: Wireless
Controller Type: iOS
Special Feature: 包含麦克风
Compatible Devices: Smartphone, Speaker
Connector Type: USB Type-C
Audio Output Mode: Stereo
Color: Black
Product Dimensions: 2.28"D x 0.98"W x 0.43"H
Item Weight: 24 Grams
Product Dimensions: 19.69 x 19.69 x 11.02 inches
Item Weight: 0.847 ounces
Item model number: BTR3K
Batteries: 1 Lithium Polymer batteries required.
Is Discontinued By Manufacturer: No
Date First Available: March 16, 2020
Manufacturer: FiiO
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jul 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
![Dexnor Compatible with Samsung Buds Live Case Clear Hard PC & Silicone Protective Cover Skin [LED Visible] [Supports Wireless Charging] 360 Full Body Cute Accessories for Men Boys - Black](https://m.media-amazon.com/images/I/61qVyZ9Sl0L._AC_US500_.jpg)
Top Amazon Reviews
great sound quality, good range, multiple compatible bluetooth codecs, including low latency (this allows it to be used for gaming comfortably if your transmitter allows) after 2-3 years of consistent use, the battery does show some wear, but it also works plugged in, so if you’re fine with losing the convenience of wireless functionality, it will work without a battery
...
show more
Reviewed in the United States on June 7, 2025 by bonesley
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
...
show more
Reviewed in the United States on January 3, 2021 by Me Me
The sound you get from this is awesome. Its super TINY! But powerful. I have used it in car mode and its fantastic for that if you need a better/new Bluetooth thing fro your car its perfect. The "case" it comes with it kinda trash and will break so if you do get it. Contact FiiO and order more or get a new case.
...
show more
Reviewed in the United States on February 2, 2025 by Joseph Archino
My truck is old enough that i dont have "true" bluetooth capabilities. This little device solved that issue. I just keep my aux cord connected to this receiver and keep it stored in my center console where I also have a USB charger port to keep it charged. not having to try and plug my phone into an aux cable every time i climb in has been a game changer. this reciever is pretty compact. its only about 2 inches long and maybe 3/4 wide. 10/10 would recommend for anyone looking for an easy and cost effective solution to a lack of automobile bluetooth.
...
show more
Reviewed in the United States on January 10, 2025 by Thumper
There's very little I could add to the many reviews of this product here already, except: if your headphones or IEM cables have interchangeable connectors, it's definitely worth your while trying the 2.5mm balanced output. While I was already pleased with the sound, it really surprised me how much of improvement that simple change made.
...
show more
Reviewed in the United States on February 25, 2025 by Haddock
There was no useable input on this device. Was gonna connect it to my BT on my helmet, but its more designed to be connected directly to the phone. Returned it.
Reviewed in the United States on March 7, 2025 by George F Bailey
I love this little thing! My IEMs work flawlessly with modern phones now. I don't need to use those silly awful airpods with bad audio. I can bring this little guy and any headphones can be used with my phone! Audio quality is amazing. Range goes really far too.
Reviewed in the United States on January 24, 2025 by jordan
I really liked this device, which I used for about 15 months. The other reviews about sound quality and range apply for me generally, so I will not re-iterate that information. I will mention that the little holster could be better; the device likes to pop out with any sort of mechanical stress. The case is designed to show off the device a lot. I did use the FiiO very frequently. At about 11 months the battery life severely truncated, and then 15 months in the battery swelled and failed, cracking the case and no longer providing more than 20 minutes charge. It's just outside of warranty and I can't find a suitable battery to replace it myself. While it's not that expensive a device, I really hate adding to technological waste and don't want to do it every year. I haven't decided if I'll buy another and try again.
...
show more
Reviewed in the United States on June 12, 2024 by T Met