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Audiophiles and music enthusiasts looking for a high-quality DAC/headphone amp will be thrilled with the black FiiO K3 V2 is a compact desktop USB-C DAC and headphone amplifier designed for use with any compatible USB device.

Updates to the K3 V2 include an upgraded ESS DAC (ES9038Q2M), which provides an increased signal-to-noise ratio of 14 dB and reduced distortion by 13 dB. The circuit design has been optimized for a low-noise floor and clean sound. FiiO also improved various performance indicators and overall sound quality, allowing you to immerse yourself in your music. Other notable features include an updated USB Type-C interface for a more reliable and stable connection. The unit now employs overvoltage protection and a double-filter circuit to ensure power supply stability. Digital and analog audio circuits each have their own power supply, which greatly reduces crosstalk.

The K3 V2 is equipped with an XMOS USB receiver chip, allowing the device to decode files up to 384 kHz / 32-bit PCM, as well as native DSD256 files. It supports USB Audio Class 1.0 (up to 96 kHz / 24-bit) and 2.0 (up to 384 kHz / 32-bit and DSD256). Designed to provide a hi-fi audio experience, the K3 V2 accurately presents your audio as it was intended by its creators.

For analog outputs, a 3.5mm single-ended connector is provided for use with your regular headphones, while a 2.5mm connector is designed for balanced headphones. Additionally, the K3 V2 includes a 3.5mm line output for connecting to monitors or home theater setups. Should your speaker system, amplifier, or external decoder require a digital connection, the K3 V2 is also equipped with RCA coaxial and optical connectors. Other notable features include a bass-boost switch, a high-/low-gain level switch, and an ADC volume control, which provides smooth level adjustments. The FiiO K3 V2 includes a set of extra foot pads and a USB cable.

Features:

• Dual USB Audio Modes
  
• Hi-Res Certified with Velvet Sound Tech
  
• 3.5mm and 2.5mm Headphone Outputs + Line
  
• Separate DAC and Amp Functions
  
• Up to 384 kHz / 32-Bit Support
  
• Coaxial and Optical Digital Outputs
  
• For Computers, iOS Devices, and More
  
• XMOS USB receiver chip
  
• Dual crystal oscillators
  
• CNC / anodized / sandblasted aluminum
  

In the Box:
FiiO K3 V2 Desktop DAC and Headphone Amplifier (Black)
USB Type-C Cable
4 x Spare Foot Pads
Limited 1-Year Manufacturer Warranty

• Handmade in Germany.
• Rear-panel ground-lift switch.
• Occupies 2 RU of rack space.
• Balanced XLR inputs and outputs.
• Per-channel volume control for easy monitoring mix.
• Ultraclean transformerless design with up to 60 dB of gain.
• Clean studio-grade headphone amplifier (mono/stereo switchable).
• Two studio-quality 1/4" instrument inputs with very high impedance.
• 60 Hz low-cut filter removes pops and rumble without signal degradation.
• Switchable -20 dB pad for handling high-level sources up to 28 dB without distortion.

Handmade and sonically pristine, the Neumann V 402 is a rackmount 2-channel microphone, instrument, or line preamplifier, painstakingly designed to deliver the true sound of your source at any gain setting. Its transformerless circuitry ensures detailed sound without coloration, and its onboard studio-grade headphone amp enables convenient monitoring of your live inputs.

With up to 60 dB of gain, switchable -20 dB pads, and 60 Hz high-pass filters, you can easily dial in and optimize your signal while avoiding distortion and degradation. Front-panel DI inputs make the V 402 equally ideal for Hi-Z instruments such as electric guitar and bass, as well as dynamic and condenser microphones.

Each channel also provides selectable 48V phantom power, switchable polarity, and a multi-segment meter. Separate volume controls allow you to adjust the balance for the monitoring mix, which feeds the front-panel 1/4" headphone output.

FiiO BTR15 Portable Bluetooth DAC and Headphone Amplifier (Black)

Experience outstanding audio quality on the go with the black FiiO BTR15, a portable Bluetooth DAC and headphone amplifier that features dual integrated DACs that deliver a refined, detailed, and articulate listening experience, even when listening to music over Bluetooth. At the heart of the BTR15 is the dual ES9219MQ DAC chips, which handle sample rates and resolutions up to 384 kHz / 32-bit. This DAC is housed alongside the Qualcomm QCC5125 Bluetooth chip to provide support for Bluetooth 5.1, as well as Bluetooth aptX and SBC.

The enclosure is crafted from hot-bent curved glass on the front and back with an aluminum alloy middle frame, which provides ample protection, as well as a space-age 3D aesthetic that not only looks great, but is easy to handle. The built-in rechargeable battery lasts for up to eight hours, ensuring you can listen to music wirelessly for a long time. If your iOS or Android device doesn’t have a 3.5mm headphone jack, this can serve as a high-quality method to stream great-sounding music to your device.

Features:

• Ultracompact, Lightweight, and Portable
• MQA Full Decoder Support, Bluetooth 5.1
• Dual ES9219MQ DAC Chips
  
• Supports AAC and SBC Formats
  
• Remote Control via App
  
• Resolutions Up to 32-Bit / 384 kHz
  
• Balanced and Unbalanced Outputs
  
• Large 0.96" OLED Display
  
• Apt X, Apt X Low Latency, Apt X HD/LDAC
  
• 8-Hour Rechargeable Battery
  

In the Box:

FiiO BTR15 Portable Bluetooth DAC and Headphone Amplifier (Black).
USB-C Cable.
Removeable Back Clip.

FiiO KA3 Compact portable USB DAC and headphone amp
KA3 headphone amps equipped with the powerful and proven ESS ES9038Q2M, supporting 32bit/768kHz and DSD512. comes equipped with 2 headphone outputs, a 3.5mm single-ended and a 4.4mm balanced output, both powerful to easily drive a variety of your headphones. compatible with various OSes like Android/iOS/Windows/Mac, you could use it connect with your smartphones/computer/players. Besides exuding elegance, the RGB light indicator usefully indicates the current sampling rate. Blue light: 48kHz and below sampling rate; yellow light: 48kHz and above sampling rate; green light: DSD. Clean sound for a great sound, featuring abundant power with high signal-to-noise ratio, low distortion, and almost 0 noise – this is true high-fidelity sound.

The KA2 usb dac has been certified to be Hi-Res Audio capable, as according to the standards developed by the Japan Audio Association (JAS) and the Consumer Electronics Association (CEA). With the KA2 headphone amps, you are sure to get accurate, high-fidelity audio that is completely faithful to the original performance.
Supports up to DSD256 and 32bit/384kHz PCM Hi-Res audio, compatible with Android/iOS/Windows/Mac. 
4.4mm balanced headphones outputs, we know that many fans use the 3.5mm connector, if you want experience the different sound, this ka2 tiny dongle is perfect for you at anytime.
The KA2 usb dac has been certified to be Hi-Res Audio capable, as according to the standards developed by the Japan Audio Association (JAS) and the Consumer Electronics Association (CEA). With the KA2 headphone amps, you are sure to get accurate, high-fidelity audio that is completely faithful to the original performance.