- Adopts the modern USB Type-C input interface
- Uses ADC volume control
- 2 USB audio modes
- All-aluminum black body
- Easy one-finger the operation volume knob
- Features 3.5mm single-ended and 2.5mm balanced headphone jacks
- XMOS USB receiver chip converts USB audio input to digital signals
The K3's well-thought-out internal design consists of two main layers, working together perfectly in harmony. Digital processing is carried out by the high-performance AKM AK4452 with 32-bit VELVET SOUND technology and fully differential outputs for true balanced output, while the analog signals are handled and amplified by a design consisting of LPF/voltage amplification and a current drive circuit.
Low-Distortion Op-Amps
The combination of the proven OPA926 with its low-distortion, low-noise, and high output swing along with the professional-grade TI OPA1612 acting as the low-pass filter (LPF) ensures the K3 effortlessly provides highly resolving sound, pumping out 320mW at 16ohms from the balanced output.
Reliable USB Power
The K3 adopts the modern USB Type-C input interface for a more reliable and stable connection, including that of power. However care to ensure an uncompromised power supply doesn't stop there the K3 implements overvoltage protection (OVP) and a double-filter circuit to ensure power supply stability, while the digital and analog audio circuits each get their own power supply to greatly reduce crosstalk.
ADC Volume Control
The secret to effectively eliminating channel volume imbalances is to use an ADC volume control, which is implemented in the K3. Plus, an added side benefit is that by reconstructing the ADC curve, the user is able to smoothly adjust the volume to a more accurate and finer degree, allowing the K3 to be used with headphones of all kinds of sensitivity for a variety of listening needs.
Gain and Bass Switches
The switch for high and low gain ensures that you can use the K3 with a wide variety of headphones and that your listening volume needs are covered. The hardware bass boost switch enhances the dynamic range of the lower frequencies and gives them some extra punch to really make your songs, games, and movies come to life.
Compact
The all-aluminum black body has been painstakingly CNC-machined, anodized, and sandblasted to ensure that the K3 feels robust yet perfectly textured for a great feel in your hands. Combined with its small size, you can easily take the K3 wherever you need to.
Tactile Audiovisual Experience
The volume knob, with 45-degree notches, etched onto its surface and perfectly sized to allow easy one-finger operation, is designed to perfectly blend in with the curves of the K3's body for a distinctive touch. Next to the volume knob is an RGB light that indicates what kind of digital audio is being input to the K3, visually confirming what you are hearing in your music.
Dual Headphone Jacks
Being optimized for indoor desktop use, the K3 is equipped with both 3.5mm single-ended and 2.5mm balanced headphone jacks. Both outputs have audio jack detection, which means that when headphones are inserted into the balanced out, balanced boost automatically kicks in resulting in about a 50% output power increase compared to the single-ended out.
Line Out Connector
The 3.5mm line out is driven directly by the OPA1612 op-amp, to ensure as little sound quality reduction as possible. The line out output is also adjustable with maximum power output up to 2Vrms, to ensure compatibility with a wide variety of active speakers and external amplifiers.
Coaxial and Optical Digital Outs
The XMOS USB receiver chip in the K3 directly converts any USB audio input to digital signals output via the coaxial and optical connectors, allowing you to connect to speaker systems, amplifiers, or other external decoders.
- FiiO New K3 Pocket-Sized Headphone Amplifier
- Limited 1-Year Warranty
FiiO New K3 Pocket-Sized Headphone Amplifier
- USB: Type-C
- USB audio class: UAC1.0 + UAC2.0
- Volume knob: ADC
- Gain: L/H
- Bass boost: 0/+6dB
- Line out: 3.5mm
- Headphone out 1: 3.5mm single-ended output
- Headphone 0ut 2: 2.5mm TRRS balanced output
- Coaxial out: RCA for 192kHz, support DSD64 DOP
- Optical ut: Up to 96kHz
- USB chip: XMOS XUF208
- USB driver: ASIO/KS/DS/WASAPI/DSD DOP(Native)
- Audio DAC: AKM AK4452
- LPF OP AMP: TI OPA1612
- Driver OP AMP: OPA926×2
- Output power 1 (3.5mm headphone output):
- 220mW(16ohms)
- 120mW(32ohms)
- Output power 2 (2.5mm TRRS balanced headphone output):
- 320mW(16ohms)
- 200mW(32ohms)
- Line level: 1.9Vrms
- DAC: 384kHz/32bit
- DSD: DSD256
- SNR: ≥113dB
- THD+N: ≤0.004%
- Frequency response: 20Hz-80kHz
- RGB indicator :
- Sample rate ≤ 48kHz - Blue
- Sample rate >48kHz - Yellow
- DSD format - Green
- Dimensions: 70 x 58 x 22mm
- Weight: 82 g
Shipping for this item is free in the Continental US Lower 48 states only. Shipping Fees include all handling & insurance.
- For Domestic Shipping to the Lower 48 States: All shipping prices include shipping, handling and insurance (if necessary).
- For Domestic Shipping to Alaska, Hawaii, Puerto Rico, US Territories, APO & FPO: For many items to these destinations there will be an additional shipping fee. The shipping costs may be calculated on the Shipping and Payments tab by entering your Zip Code. Free shipping is for the lower 48 only
- For International Shipments: All international orders are managed through eBay's Global Shipping Program. Please see the Shipping Tab for full costs.
- Hotels: Unfortunately at this time we do not ship to hotels.
Paypal: PayPal is our preferred method of payment for all of our eBay sales. For customer service please contact us through eBay Messages
Immediate payment via PayPal is required for all Buy It Now items. For all Best Offers, payment is required within 3 days. If you need special arrangements, please contact us through eBay messages. After your order has been shipped, you will receive an e-mail with the name of the carrier and the tracking number.
Returns are permitted if you are not satisfied with your purchase and must be initiated by the buyer within 30 days from delivery date.
For Domestic Purchases:
If you are not satisfied with your purchase, you may return it (see exceptions in Paragraph F below), within 30 days of receipt, for a refund or replacement - subject to the following:
a) Contact us through eBay messages or the returns link to receive a Returned Merchandise Authorization (RMA) number to ensure proper handling of the return and/or replacement.
b) In order to be eligible for a full refund, less shipping expenses, your returned merchandise must be in its original new condition, as shipped, with all packaging, manuals, and paperwork intact and unaltered. Items which have been opened are returnable, however they will carry a restocking fee.
c) Customers remain responsible for the shipping and handling expenses incurred in shipping the item to them. If an item is offered with "Free Shipping," this means we are paying the freight on your behalf. If that product is returned for a refund, the shipping expenses incurred, will be deducted from the refund. If an item is refused, the carrier bills us for shipping both ways, and these expenses incurred on your behalf need to be deducted from your refund
d) All returns are subject to inspection. Products returned must be in brand new condition, as per Paragraph b), if not, it may be deemed non-refundable or will be subject to at least a 15% restocking fee. If your return is missing accessory components, or shows signs of wear - restocking fees will be higher. For specific restocking fees that may be applicable to your return, please contact us through eBay messages.
e) Returns should be packed in an outer shipping carton, not just the original box/packing of the product. The RMA# should be clearly inscribed on the shipping label. A copy of your invoice and Order # should be included, and your return should be insured, with shipping costs pre-paid. We cannot accept any COD shipments.
f) There are product categories which are not returnable due to hygienic or sanitary as required by manufacturers. If your items is a consumable good or is has been locked by a manufacturer such as Apple or HP the return will not be accepted
For Warranty information, merchandise lost / any other issues in transit, or order cancellations, please contact us through eBay Messages. In an event where there is an error regarding a price error or description, we will notify you ASAP. In this event there will be no obligation to proceed with the purchase. Any amount charged to the customer will be 100% refunded.
For International Purchases:
Returns will be accepted within 30 days of the receipt of the item. In order to be eligible for a refund your returned merchandise must be in its original unopened condition, as shipped, with all packaging, manuals, and paperwork intact and unaltered. Items removed from their 'blister-pack' display packaging are non-refundable.
International Buyers must pay return shipping via the same method originally shipped.
We strive for every transaction to be five stars!
Please let us know how we can make yours a five-star rated one too!
Our goal is to make sure you are customer 100% satisfied with your order. When you receive your order take a minute to leave us positive feedback at eBay. If you are not satisfied with any part of our service we please contact us to allow us correct the problem, prior to leaving your feedback. Please send us a message through eBay and let us know how we can earn your 5 stars!
If you have any questions or comments, please contact us through eBay message.
