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Desktop DAC headphone amplifier, silver chassis, front volume knob, 6.35mm and 4.4mm outputs, RGB status lights

FiiO

FiiO K7BT Bluetooth DAC headphone amplifier

SKU CH-4VMW-F09FW

Bluetooth desktop DAC and headphone amplifier with dual AK4493SEQ DACs, THX AAA 788+ amps, 2000 mW balanced output and LDAC support

  • TypeAccessories
  • Dual AK4493SEQ DACs deliver balanced, detailed sound
  • THX AAA 788+ amps provide 2000mW into 32 ohms
  • Qualcomm QCC5124 chip supports LDAC and aptX Adaptive
  • Six-stage circuit with balanced decoding reduces crosstalk
  • Multiple inputs and 4.4mm, 6.35mm, 3.5mm outputs

Balanced desktop DAC/amp with Bluetooth

The FiiO K7BT is a new desktop headphone amplifier and digital-to-analogue converter that combines balanced analogue circuitry with wireless reception. Dual AK4493SEQ DACs and THX AAA 788+ amplifiers feed 4.4 mm balanced and 6.35 mm single-ended outputs, while USB, optical, coaxial and analogue inputs accept wired sources. A Qualcomm QCC5124 chip adds Bluetooth connectivity for cable-free listening.

For headphone owners wanting balanced drive

This unit suits listeners who need a single desktop box that can power demanding full-size headphones through a balanced connection and also stream from a phone or computer via Bluetooth. It is less suited to buyers who require only a simple portable dongle, who need XLR outputs, or who want multichannel processing for speakers.

Dual AK4493SEQ DACs with THX AAA 788+ amplification

The six-stage circuit uses one AK4493SEQ per channel alongside dual THX AAA 788+ modules, delivering 2000 mW into 32 Ω and 560 mW into 300 Ω at 1 % THD+N. This balanced topology and power rating determine whether the amplifier can properly drive a specific pair of headphones.

Highlights

  • Dual AK4493SEQ DACs deliver balanced, detailed sound
  • THX AAA 788+ amps provide 2000mW into 32 ohms
  • Qualcomm QCC5124 chip supports LDAC and aptX Adaptive
  • Six-stage circuit with balanced decoding reduces crosstalk
  • Multiple inputs and 4.4mm, 6.35mm, 3.5mm outputs

Specifications

TypeAccessories

Questions about this item

What headphone connectors must I already have to use the 6.35 mm and 4.4 mm outputs?

You need headphones terminated with a 6.35 mm single-ended plug for the unbalanced output or a 4.4 mm balanced plug for the balanced output; a 3.5 mm jack is also provided for single-ended use.

How does the dual THX AAA 788+ amplifier perform with my existing 300 Ω headphones?

The amplifier delivers 560 mW into a 300 Ω load at 1 % THD+N, giving clean, high-output drive for demanding full-size headphones.

Which RGB indicator colours confirm the DAC is decoding 384 kHz PCM or 256 DSD?

The RGB indicator lights change colour to show the current sampling rate, so you can visually verify 384 kHz PCM or DSD 256 playback after setup.

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