Save your phone's battery
Supplies the KA17 or QX13 independently of the device it's connected to.
FIIOPOWER BANK
FiiO ESTICK Backup Battery For Portable DAC/AMP - BLACK (Box opened)
Power your DAC, not your phone.
A mini power bank for the FiiO KA17 and QX13, giving up to 5 hours of independent power from an 1100mAh battery.
Regular price
£11.52
£19.99
Save £8.47
Unit price
Including VAT
Free next day UK deliveryFree UK delivery
Order now for next day delivery with you by Wednesday 21 October.Or choose standard delivery, with you by Friday 23 October.
Clearance product Full manufacturer warranty
The box has been opened: for a demo or review, by customs at import, or returned by a customer as unwanted within our 14-day returns period. We check and test every unit. It has no cosmetic marks and comes with everything listed under In the box.
The original retail box, in good condition (it may have been opened).
The printed guide or manual is included (where the maker supplies one).
Checked and tested by our team: it works as it should.
Everything listed under In the box is included.
It starts up and runs as it should.
Checked and tested · No cosmetic marks unless the listing says so
THE AMP3 DIFFERENCE
Great gear. Even better service.
Order by 2pm, Monday to Friday, for next day delivery. Destination and stock availability apply.
Not sure it’s your perfect match? Talk to an audio specialist
FiiO ESTICK Backup Battery For Portable DAC/AMP - BLACK (Box opened)
A little extra. A better pairing.
Better together.
Hand-picked pairings for this product. Choose one — we'll add them together.
MEET THE ESTICK
Power your DAC, not your phone.
A mini power bank for the FiiO KA17 and QX13, giving up to 5 hours of independent power from an 1100mAh battery.
Pure power
Low-ESR tantalum capacitors reduce ripple for purer, more detailed sound.
Compact and simple
Just 30.8g, with Type-C in/out and a clear power indicator.
Read the full description
Condition: Box opened
What this means: The box has been opened, so we can't sell it as new. It has been checked and works as it should, and it comes with all its accessories and the manual. No cosmetic marks: a unit with marks is listed as Cosmetic scratches and says so. Full manufacturer warranty.
The FiiO ESTICK is a compact mobile power supply made for FiiO’s KA17 and QX13 DAC/amps. It pairs with them perfectly and gives them their own independent power supply, so they don’t drain the battery of the phone or other device they are plugged into, and it gives them up to 5 hours of extra listening. FiiO also names it as a power source for the QX11’s Desktop Mode. It weighs about 30.8g and comes in a choice of colours.
Pure power for a purer sound
The output circuit uses AVX low-ESR tantalum capacitors for a stable, pure supply with less power ripple, which FiiO says leads to a purer, more detailed sound. Charging is managed by an SW6003 chip.
Compact size, long battery life
The 1,100mAh lithium-ion battery (4.1Wh) gives the KA17 or QX13 up to 5 hours of power. A button switches the ESTICK on and off, and four LEDs show its battery level at a glance, so you can enjoy uninterrupted music. It has a USB-C plug and a USB-C socket for charging and output, and charges at 5V/1A.
Which FiiO DACs it works with
- FiiO KA17: one of the two DACs the ESTICK was designed for.
- FiiO QX13: connects to its POWER IN port, with a charging setting for the ESTICK in the QX13’s menu.
- FiiO QX11: FiiO names the ESTICK as a portable power source for the QX11’s Desktop Mode, which raises its output to up to 800mW + 800mW.
| Battery | 1,100mAh rechargeable lithium-ion (3.7V, 4.1Wh) |
|---|---|
| Charging chip | SW6003 |
| Output circuit | AVX low-ESR tantalum capacitors |
| Connectors | USB-C plug · USB-C socket (charging and output) |
| Rated input / output | 5V, 1A / 5V, 0.6A |
| Controls | Power button · four battery-level LEDs |
| Size and weight | About 64 × 23.5 × 13mm · about 30.8g |
Good to know
- This listing is for the ESTICK only; the DAC/amp is not included.
- Matching cases hold the ESTICK together with its DAC: the KA17 and ESTICK case and the QX13 and ESTICK case.
- In the box: ESTICK, USB adapter and quick guide.
In the box
- FiiO E-Stick Backup Battery For Portable DAC/AMP
- USB adaptor
- Quick Guide
THE FINER DETAILS
Built for
better listening.
Know what you’re choosing.
Find the right fit for your setup.
- Design
- Mini power bank for FiiO KA17, QX13 and QX11 · SW6003 charging chip · AVX low-ESR tantalum output capacitors
- Output power
- DC 5V, 0.6A out · 5V, 1A in
- Battery
- 1,100mAh lithium-ion (3.7V, 4.1Wh) · up to 5 hours with a KA17 or QX13
- Connectors
- USB-C plug · USB-C socket (charging and output)
- Compatibility
- FiiO KA17, QX13 and QX11
- Size (H × W × D)
- 64 × 23.5 × 13mm
- Weight
- 30.8g
Specifications are based on manufacturer information and may change. Battery life varies with use and settings.
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GOOD TO KNOW
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How does free delivery work?
Every UK order has a free delivery option, and orders of £50 or more qualify for free next day delivery. Order by 2pm, Monday to Friday, for next day delivery; orders placed after 2pm, at the weekend or on a bank holiday are dispatched on the next working day. Stock availability and destination also affect arrival — check the options shown at checkout.
Pre-orders ship when stock arrives; the next day service starts after dispatch. Full delivery information
What if it’s not right for me?
Return within 14 days for any reason, or within 30 days if faulty, with free return postage. See our full Returns Policy for conditions and how to start a return.
Can you help me choose headphones?
Absolutely. Tell us what you listen to and the headphones you have — or the ones you’re considering — and we’ll help you find a suitable pairing. Chat with us
How do I request a Price Beat?
Use the Price Beat option on this page to send us the competing offer. The team will review your request; it isn’t an automatic discount. How Price Beat works
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