[🎶SG] TOPPING DX9 AK4499EQ DAC and Headphone Amplifier

(>‿◠)✌ SAM AUDIO
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TOPPING DX9 DAC/Amp
> AK4499EQ DAC with 132dB dynamic range and ultra-low distortion
> Six-channel discrete NFCA high-performance headphone amplifier
> Hybrid relay volume control for high-precision adjustment
> Independent power for DAC and headphone amplifier circuits
> Aurora UI with dual 2.0-inch full-color screens
> Wide range of digital inputs and outputs

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Descriptions:

Commemorating 15 Years of Audio Magic
Meet the TOPPING DX9, a limited edition DAC and headphone amplifier that combines the wisdom of 15 years of audio engineering with forward-looking technology. A flagship product from TOPPING’s 15th Anniversary line-up, the DX9 doesn't just sit on the market—it leads it. With its advanced AK4499EQ DAC chipset, hybrid relay volume control, and six-channel discrete NFCA high-performance headphone amplifier module, the DX9 offers an impeccable audio environment.

Flagship DAC for the audiophile
The DX9 is powered by the rare and legendary AK4499EQ DAC chip, boasting an exceptional 132dB dynamic range and less than 0.00007% harmonic distortion. With four independent channels, it brings unmatched audio fidelity and clarity to your listening sessions. This DAC chip is like having two flagship AK4499EX chips working in tandem, and when paired with the AK4118—currently the lowest jitter S/PDIF receiver—the DX9 offers top-tier performance.

Unshakable audio quality
The six-channel discrete NFCA (Nested Feedback Composite Amplifier) high-performance headphone amplifier module packs a punch. With 7000mW of driving force per channel and distortion levels below 0.00009%, it's got the power and finesse to handle even the most demanding headphones with ease.

The fine art of volume control
The hybrid relay volume network in the DX9 is all about precision. By combining resistor and relay-based control, it greatly optimizes SNR (Signal-to-Noise Ratio) and minimizes noise at low volumes. This gives you high-precision volume control, making each decibel adjustment a deliberate choice, not a compromise.

Power independence
The DAC and headphone amplifier circuits in the DX9 are powered independently. This ensures clean, unadulterated sound by providing plenty of energy and reducing interference between the circuits.

Flagship user interface
The DX9 comes with dual 2.0-inch full-color screens and features TOPPING's new Aurora UI—intuitive, easy to navigate, and visually stunning. The knob and buttons complement each other seamlessly, making operation buttery smooth.

Flexibility in connectivity
Eight-way digital inputs including AES, USB, Optical, Coax, and Bluetooth ensure that the DX9 can connect to a wide range of devices. With independent LINE OUT and preamplifier outputs, the DX9 makes flagship performance accessible to a multitude of setups.

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Specifications:

> DAC RCA Specs
> THD+N @1kHz (A-wt): <0.00008%
> THD @20-20kHz 90kBw: <0.00015%
> SNR @1kHz (A-wt): 127dB
> Dynamic Range @1kHz (A-wt): 127dB
> Frequency Response:
> 20Hz-20kHz (‡0.2dB)
> 20Hz-40kHz (+0.6dB)
> Output Level: 2.1Vrms @0dBFS
> Noise (A-wt): <1.0uVrms
> Channel Crosstalk: -125dB @1kHz
> Channel Balance: 0.3 dB
> Output Impedance: 50Ω

> DAC XLR Specs
> THD+N @1kHz (A-wt): <0.00007%
> THD @20-20kHz 90kBw: <0.00015%
> SNR @1kHz (A-wt): 131dB
> Dynamic Range @1kHz (A-wt): 131dB
> Frequency Response
> 20Hz-20kHz (‡0.2dB)
> 20Hz-40kHz (±0.6dB)
> Output Level: 4.2Vrms @0dBFS
> Noise (A-wt): <1.3uVrms
> Channel Crosstalk: -125dB @1kHz
> Channel Balance: 0.3 dB
> Output Impedance: 100Ω

> Single-ended headphone jack amp out specs
> THD+N @1kHz (A-wt)
> <0.00010% @Output=550mW (32Ω)
> <0.00008% @Output=60mW (300Ω)
> THD @20-20kHz 90kBW
> <0.00060% @Output=550mW (32Ω)
> <0.00030% @Output=60mW (300Ω)
> SNR @MAX OUT 1kHz (A-wt): 131dB @1kHz
> Dynamic Range @1kHz (A-wt): 131dB @1kHz
> Frequency Response
> 20Hz-20kHz (‡0.2dB)
> 20Hz-40kHz(‡0.6dB)
> Output Level
> 12Vpp @G=L
> 24Vpp @G=H
> Noise (A-wt)
> <1.6uVrms @G=L
> <2.4uVrms @G=H
> Channel Crosstalk: -98dB @1kHz
> Gain
> G=L 12.5dB (Vrms/FS)
> G=H 18.5dB (Vrms/FS)
> Channel Balance: 0.3 dB
> Output Impedance: <0.1Ω
> Output power
> 3300mW × 2 @ 16Ω THD+N<1%
> 2100mW × 2 @32Ω THD+N<1%
> 1190mW × 2 @64Ω THD+N<1%
> 240mW × 2 @300Ω THD+N<1%
> Load impedance: >8Ω

> Balance headphone jack amp out specs
> THD+N @1kHz (A-wt)
> <0.00007% @Output=550mW (32Ω)
> <0.00007% @Output=60mW (300Ω)
> THD @20-20kHz 90kBW
> <0.00050% @Output=550mW (32Ω)
> <0.00030% @Output=60mW (300Ω)
> SNR @MAX OUT 1kHz (A-wt): 132dB @1kHz
> Dynamic Range @1kHz (A-wt): 132dB @1kHz
> Frequency Response
> 20Hz-20kHz (‡0.2dB)
> 20Hz-40kHz (‡0.6dB)
> Output Level
> 12Vpp @G=L
> 47Vpp @G=H
> Noise (A-wt)
> <1.3uVrms @G=L
> <4.2uVrms @G=H
> Channel Crosstalk: 121dB @1kHz
> Gain
> G=L 12.5dB (Vrms/FS)
> G=H 24.5dB (Vrms/FS)
> Channel Balance: 0.3dB
> Output Impedance: <0.1Ω
> Output power
> 10000mW × 2 @16Ω THD+N<1%
> 7080mW × 2 @32Ω THD+N<1%
> 4250mW × 2 @64Ω THD+N<1%
> 950mW × 2 @300Ω THD+N<1%
> 460mW × 2 @600Ω THD+N<1%
> Load impedance: 100Ω

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