Anyone know what the "charging off" switch is for? Why would I turn the charging ability off? The unit plays music fine with it off or on?

1) you need to switch it on to charge the unit. 2) you can set it to off to prevent it drains battery of your phone when you connect it (via usb-c not bluetooth) to your phone. 3) the unit plays music fine regardless of this switch's setting. hope it helps.

For those on ios (iphone or ipad), are you able to save your 3 custom eq settings on to btr7 from fiio control? heard there was a bug.

This is bad advice. The app is extremely easy to use and the parametric equalizer is perhaps the best feature and the reason I purchased this amp. I use iOS and saving the settings is easy and practically automatic. The custom EQ is only adjustable through the app. I’m not sure why so many people have problems using it. It seems so simple to me. My only issue is when you reset the custom EQ to default (flat), it resets all 3 at once. It would be better if you could individually reset each one.

Can this be charged while in use?

Sure can. This little amp is amazing!

Will this product increase the frequency range of my headphones? currently 20-40,000 khz, will this get it down to 10khz and improve dynamics qualiy

Your headphones' current range is 20hz to 40,000 Hz or 20hz to 40 kHz. It is already past 10 kHz, and will not reduce it. What this device will do is improve sound quality with less background noise, or hiss and so more dynamic range.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

FiiO BTR7 Headphone Amp Bluetooth Receiver High Resolution Portable DAC Supports MQA/LDAC/aptX HD 384K/32Bit DSD256 for Phone/PC/Car/Home Audio

FiiO BTR7 Headphone Amp Bluetooth Receiver High Resolution Portable DAC Supports MQA/LDAC/aptX HD 384K/32Bit DSD256 for Phone/PC/Car/Home Audio

Product ID: 554872919

Details

Brand
FiiO
Maximum Supply Voltage
5 Volts (DC)
Minimum Supply Voltage
5 Volts (DC)
Mounting Type
Freestanding
Number of Pins
8

🎧Dual ESS9219 DACs for pristine sound

📱Bluetooth 5.1 with LDAC & aptX HD

🔋9-hour battery with wireless charging

2173 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Poland.

Secure transaction

Description

🎶 Elevate your audio game — don’t just listen, experience every detail!

SEAMLESS WIRELESS FREEDOM - Bluetooth 5.1 supports LDAC, aptX HD, AAC and more for lossless streaming on the go.
INTUITIVE COLOR TOUCHSCREEN - 1.3” IPS display shows codec, volume, battery & EQ info at a glance for effortless control.
MASTER GRADE AUDIO PRECISION - Dual ESS9219 SABRE DACs deliver ultra-high 118dB SNR for crystal-clear, immersive sound.
VERSATILE CONNECTIVITY MODES - Use as USB DAC/amp with 32bit/384kHz & DSD256 support or wireless Bluetooth receiver.
POWERFUL THX AAA AMPLIFICATION - Clean, distortion-free output with 300mW balanced power to drive any headphones.

The FiiO BTR7 is a premium portable headphone amplifier and DAC featuring dual ESS9219 SABRE DACs, THX AAA amplification, and Bluetooth 5.1 with support for LDAC, aptX HD, and MQA decoding. It offers up to 9 hours of playback with wireless charging, a vibrant 1.3” color touchscreen, and versatile USB DAC functionality supporting 32bit/384kHz PCM and DSD256 formats, making it the ultimate all-in-one high-resolution audio companion for professionals and audiophiles alike.

Specifications

ASIN	B09ZKJ5P5R
Audio Output Mode	Stereo
Brand	FiiO
Brand Name	FiiO
Compatible Devices	Smartphone, Personal Computer, Tablet, Television
Country of Origin	USA
Customer Reviews	4.4 out of 5 stars 471 Reviews
Included Components	Leatherette case \| USB charging cable \| USB Type-C to Type-C cable
Interface	USB
Interface Type	USB
Item Dimensions L x W	10.2L x 4.3W Centimeters
Item Weight	45 Grams
Manufacturer	FiiO
Material Type	Aluminum alloy, High-strength glass
Maximum Supply Voltage	5 Volts (DC)
Minimum Supply Voltage	5 Volts (DC)
Model Number	SFNS2031
Mounting Type	Freestanding
Number Of Pins	8
Number of Channels	2
Number of Items	1
Number of Pins	8
Part Number	BTR7

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

2173 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Poland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews