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The E10K USB DAC Headphone Amplifier from Fiio is designed to improve your laptop’s audio output quality via its PCM5102 DAC chip and is capable of handling PCM files in up to 24-bit, 96 kHz resolution. It features a selectable bass boost and low-pass filter, both with circuitry optimized for a low noise floor when engaged, allowing you to customize the sound of your audio to your tastes.

The unit connects to your laptop via its Micro USB connection, which also provides it with power. It offers a variety of connections, including a front-panel 1/8″ headphone jack, a rear-panel 1/8″ line output, and a rear-panel coaxial digital output, which allows you to send your digital audio to another destination.

• Handles PCM Files up to 24-bit/96 kHz
• Selectable Bass Boost
• Front-Panel 1/8″ Headphone Output
• Coaxial Digital Output
• 1/8″ Line Output
• Micro USB Connector
• Bus Powered

The Fiio Q1 Mark II is a DAC and headphone amplifier designed for use with iPhones, Walkman, mobile players, computers, and other devices. It’s designed to provide a hi-fi audio experience, presenting your audio exactly as it was intended to be heard by its creators.

• For Computers, iOS Devices & More
• Separate DAC & Amp Functions
• Hi-Res Certified
• Up to 384 kHz / 32-Bit Support
• DSD256 Support
• Built-In Rechargeable Battery
• Up to 30-Hour Amp Battery Life
• USB Cables & 3.5mm Audio Cable Included
• Includes Silicone Base Pad
• Includes 4 Silicone Bands

The BTA10 is a Bluetooth adapter specifically designed to make your Audio-Technica ATH-M50x go wireless. It starts with the looks, with a design that closely matches the curves of the headphone while getting rid of the mess from wires. Then it comes to the superior sound, due to the high-performance Qualcomm QC3005 Bluetooth chip’s support for high-quality wireless audio codecs. Altogether, the BTA10 will give you a noticeable upgrade to your ATH-M50x headphones that you can feel.

• Support SBC\AAC\aptX\aptXLL, QCC3005 Bluetooth chip. Android 5.0 version.
• Support Bluetooth phone call, built-in microphone, control call, hang up (support CVC noise reduction)
• With independent amp TI TPA6132A2.
• Lithium-ion rechargeable battery, working time is about 8 hours, charging time is less than 2 hours
• Status indicator, can indicate power on status, Bluetooth pairing, charging status, low battery reminder (less than 20%)
• Headphone output 2.5mm male plug, for ATH-M50x, perfect fit.
• Micro USB interface, for charging only.
• Bluetooth distance: 10 meters
• Three buttons: volume + / Pre, power / pairing / playback, volume – /Next.

The FiiO BTR1K is a Bluetooth receiver with an integrated DAC. It is intended to give you, the listener, a more refined, detailed, articulate, and sonically pleasing experience when listening to music over Bluetooth. The previous iteration of this receiver also purported to mitigate the sonic inferiority of the Bluetooth experience, but this version takes things a step further with a new Qualcomm QCC3005 Bluetooth chip, one that handles Bluetooth 5.0.

• Bluetooth Receiver & DAC for Audiophiles
• Bluetooth 5.0, AAC, SBC, aptX & aptX LL
• NFC & Fast Bluetooth Pairing
• iOS & Android Compatible
• AK4376A DAC
• Lower Noise Floor Than Previous Model
• Higher SNR Than Previous Model
• 3.5mm Headphone Output, USB-C DAC Output
• 2-Hour Charge Time / 8-Hour Battery Life
• Built-In Microphone

The i1 from FiiO is an MFi-certified Lightning to 3.5mm headphone adapter designed to provide connection of standard 3.5mm jack–equipped headphones to Apple Lightning port–equipped products. It also features a built-in microphone and on-board, multi-function controls. It is compatible with sample rates up to 48 kHz.

• Connect headphones equipped with a standard 3.5mm headphone jack to your Apple device
• For Apple products with a Lightning port
• Lightning connector to 3.5mm female jack
• Automatic detection of standard headphones and headphones with in-line controls
• Built-in microphone
• On-board multi-function controls for volume, play, pause, volume, answer call, end call, and more
• 31.5″ (80cm) cable length
• MFi certified
• Low distortion
• Up to 48 kHz sample rate
• Low power consumption
• Includes cable clip

The FiiO µBTR is a portable Bluetooth receiver designed to seamlessly interface wired headphones with Bluetooth-enabled devices such as smartphones, tablets, and laptop computers. With a Qualcomm CSR8645 Bluetooth chip, it supports Bluetooth 4.1, NFC one-touch pairing, and AAC, aptX, and SBC audio codecs. The internal battery provides up to nine hours of operating time, and recharges in approximately one hour using the supplied USB Type-C charging cable.

• Connects Wired Headphones to Bluetooth
• Bluetooth 4.1 with NFC One-Touch Pairing
• Supports AAC, aptX, and SBC Codecs
• Internal Rechargeable 9-Hour Battery
• Built-In Omnidirectional Microphone
• 3.5mm Stereo Headphone Output
• Multifunction Remote Control Buttons
• Independent Local Volume Control
• Integrated Clip
• Includes USB Type-C Charging Cable

• 450 mW at 16Ω Power Output
• Fully Discrete Bass Boost Circuit
• Approximately 16 Hour Run Time
• 1400 mAh Rechargeable Battery
• 20 to 20,000 Hz Frequency Response
• All-Aluminum Alloy Body
• Shields Against EM Interference
• OPA1642 Voltage Pre-Amplifier
• AD8397 Power Amplifier
• Low – High Gain Toggle Switch

• 800mW at 32 Ohms
• Signal to Noise Ratio of 115 dB
• Total Harmonic Distortion of 0.002%
• CNC-Milled 3.5mm Headphone Jack
• High/Low Switch for Various Headphones
• 880mAh 11V Battery
• Play Time: 13 Hours
• Charge Time: 2.5 Hours
• Includes Silicone Bands and Pads
• USB Charging Cable and 3.5mm Audio Cable