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FiiO K9 Pro ESS Desktop DAC and Amplifier

$1,099.99

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This product is brand-new and factory sealed FiiO K9 Pro ESS  Low Stock : Order Soon
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Moves Your Human "Core", And Not Just By A Little!

Inside the K9 Pro ESS are 2 ES9038PRODAC chips, specifically designed for maximum performance in desktop-grade equipment. One ES9038PRO chip, with all of its 8 parallel outputs, is used for each channel to achieve richly detailed sound with minimal distortion.

Pure Clean Sound, Satisfying Even Demanding Listeners

The THX AAA 788+ chips used in the K9 Pro ESS provide exemplary details and dynamics no matter if you are using low or high-impedance headphones. The K9 Pro ESS can produce an undistorted 1100m W* under a 3002 load, and an undistorted 2100m W under a 3202 load, 50% higher than the original THX AAA 788 amplifier chips.

As tested in FiiO Labs under balanced out.

Precise Design

Fully Differential, Fully Balanced Design

Fully differential signals go through the DAC, volume adjustment, and amp for a truly balanced design. Such a design ensures minimal interference between different components in order to fully maintain all details and large dynamic swings in music for unmatched sound quality.

Separated Analog And Digital Sections, Partitioned Design

The PCB of the K9 Pro ESS uses a partitioned layout, wherein not only the power supply and signals are separated, but the analog signal loop is also put in an independent section, guaranteeing the integrity of the audio signal being processed.

Six-Stage Audio Circuit, To Reveal Every Last Detail

Every audio signal goes through a mammoth 6-stage circuit to reproduce music as faithfully and as detailed as possible.

Electricity Is The Mother Of Sound

Immensely Robust, Linear Power Supply

Electricity is the mother of sound, so special attention was paid to optmizimg the K9 Pro ESS's power supply to ensure excellent sound. The K9 Pro ESS's linear power supply, with its low-frequency transformer and 4 massive 4700uF capacitors makes sure that the rest of the system gets abundant clean power.

Just Pure Sound, Isolated Digital And Analog Power Delivery

The digital portions of the K9 Pro ESS physically receive power separately from the analog portions, for effective shielding against audio interference between the two circuits. This ensures pure and faithful reproduction of your music.

Quality And Quantity, LDOs For Each Circuit Stage

Besides the special high-performance linear power supply, the power stabilization and filtering within the audio circuit are also a big contributor to the K9 Pro ESS's excellent sound. Specifically, in each stage of the audio circuit, ultra-low-noise LDOs are employed for voltage regulation.

Dual Femtosecond Clocks, Precise Clock Management

A dual-mode clock management design is utilized for the K9 Pro ESS. Under USB and Bluetooth decoding, dual asynchronous femtosecond clocks are used, while under optical and coaxial decoding, automatic PLL clocks are employed. A more precise clock management system makes it easier to handle any kind of source and maintain the maximum quality possible.

MQA Renderer, Lossless Sound Reproduction

The KO Pro ESS supports the unfolding of MQA tracks, allowing you to listen to high-resolution audio files that are not only reasonably sized but also retain the master-level sound quality that brings you directly into the recording studio.

With an appropriate music player supporting MQA, the K9 Pro ESS supports up to 8x

Fast And Reliable Hi-Res Bluetooth

The K9 Pro ESS employs the Qualcomm QCC5124 to handle Bluetooth duties, with support for formats such as LDAC, aptX HD, and aptX Adaptive. This chip ensures that Bluetooth connections are both reliable and quick, satisfying both the low latency needs for games/videos and the high bitrate necessary for high-resolution audio.

Bluetooth format support: AAC/SBC/aptX/aptX LL/aptX HD/LDAC/aptx Adaptive.

Essentiality Of Volume Adjustment

Adjusting the volume may look like a simple concept, but a good execution of it is crucial to an excellent audio experience. The ADC curve reconstruction method of volume adjustment used n the K9 Pro ESS effectively minimizes any left-right channel volume imbalance and noise. It also results in a smooth change of volume across all levels. This attention paid to the simple process of volume adjustment is just another layer to making sure you truly savor your music with the K9 Pro ESS.

Lighting Up The Mood

The RGB indicator lights surrounding the volume knob can light up differently depending on the currently playing sampling rate.


Dial It In With Three Gain Levels

Choose between high, medium, and low gain with a physical switch to fit exactly your needs when listening to your particular pair of headphones. Thanks to the pure hardware gain circuit, even when listening at low gain with high-sensitivity headphones both dynamic range and musical fidelity remains uncompromised.

Plentiful Connectors To Choose From

Front: XLR 4-pin, 4.4mm balanced, 6.35mm single-ended headphone outputs.

Rear: 4.4mm balanced line in; coaxial, optical, Bluetooth, RCA, USB input; RCA SE out and XLR*2 balanced out.

Side: USB Type-C port

Refreshingly Modern, Custom Stand

The included custom stand not only reduces the amount of space the K9 Pro ESS takes on your desktop, it also allows for more eficient dissipation of heat through convection-making the stand a true example of both form and function.

A True Renaissance Man

Drive power-hungry headphones (desktop USB audio + Headphones).

Connect to home audio setup (desktop USB audio + active speakers).

Side-mouted Type-C port for easy connection to mobile devices.

RCA+XLR balanced line out (for active speakers, monitor speakers, external amplifiers).

Connect to mobile devices (players, computers).

App-controllable desktop amp Bult-in Bluetooth Low Energy (BLE) technology allows you to use the Fio Control App to control functions like filter selection, channel balance, etc. even when not in Bluetooth mode.


FiiO K9 Pro ESS Desktop DAC and Amplifier
FiiO K9 Pro ESS Desktop DAC and Amplifier Shipping : FREE in Canada
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