The Topping DX9 is a flagship all-in-one DAC amplifier that's generating significant buzz in the audiophile community. This comprehensive review delves into whether the DX9 lives up to the hype, examining its impressive specifications, innovative technology, and overall sonic performance. We'll explore its strengths and weaknesses, comparing it to both competing all-in-one units and higher-end separates systems to determine its place in the market. Expect detailed analysis of its sound signature, features, and build quality, providing a clear picture of its capabilities and value proposition.This in-depth assessment will cover the DX9's powerful output, its implementation of discrete NFCA technology, and its versatile connectivity options. We'll also discuss the quality of its AK4499EQ DAC and the impact of its neutral, transparent sound signature on the listening experience. Ultimately, this review aims to help you decide if the Topping DX9 is the right high-performance all-in-one amplifier for your needs and budget, considering alternatives and highlighting its key advantages and limitations.
Pros And Cons
- One of the best all-in-ones in the market
- Ridiculous spec performance
- Awesome sound quality (discrete NFCA amp)
- Unmatchable capability for the value
- High voltage (47V peak-to-peak)
- High wattage output (10W into 16 ohms)
- Low total harmonic distortion (0.00007%)
- High dynamic range (132dB)
- Reduced channel crosstalk
- In-built power supply
- Best-looking product in Topping's current lineup
- Abundance of features (preouts, line outs, multiple inputs)
- Dual screens (input settings/volume, FFT or VU meter)
- State-of-the-art AK4499EQ DAC chip (32-bit)
- Six-channel discrete NFCA amp (low distortion)
- Hybrid relay volume control
- Multiple filter settings (six PCM, two DSD)
- Very clean and pure signal
- Excellent dynamics
- Very quiet noise floor
- Sufficient power to run demanding headphones
- Good headroom
- No EQ
Read more: Fiio K11 R2R DAC/Amp Review: A Worthy Upgrade or Redundant Luxury?
Unmatched Performance and Specs
The Topping DX9 boasts ludicrous specifications for an all-in-one device. Its 47-volt peak-to-peak output and 10-watt power into 16 ohms are significantly higher than its predecessor, the DX7 Pro Plus. This impressive power is achieved while maintaining exceptionally low total harmonic distortion (0.00007%) and a high dynamic range of 132dB. These figures are simply unmatched in the current market for all-in-one units.

The DX9 also integrates a built-in power supply, a feature not common among all-in-one amps. Its stylish design, housed in a sleek chassis with a glass display, makes it visually appealing as well. It’s a testament to Topping’s commitment to high-end audio engineering within a compact form factor.
Superior Sound Quality with Discrete NFCA Technology
The DX9 utilizes discrete NFCA (Nested Feedback Composite Amplifier) technology, a significant upgrade from the non-discrete version found in previous models. This translates to a noticeable improvement in sound quality, addressing criticisms of sharpness and artificiality associated with earlier NFCA implementations. The discrete design delivers a more natural and less fatiguing listening experience.
Many reviewers, myself included, prefer the discrete NFCA amps for their superior sonic characteristics. This improvement is evident when comparing the A90 and A90D, where the discrete version offered a substantial leap in audio quality.
Comprehensive Feature Set and Connectivity
The Topping DX9 is generously equipped with features. It boasts pre-outs, line outs, and a multitude of inputs, including dual coaxial and optical inputs. This flexibility ensures compatibility with a wide range of audio sources. The dual screens allow users to customize the display, switching between input settings, volume, FFT, or VU meter, adding a level of personalization.

The incorporation of the AK4499EQ DAC chip, a high-quality 32-bit DAC, further enhances the DX9's performance. While not the absolute best DAC available, it's exceptionally competent for an all-in-one unit. The inclusion of various filter settings adds another layer of customization to match your specific preferences.
Sound Signature and Performance
The DX9’s sound signature is notably neutral and transparent. It avoids any overt warmth, coldness, brightness, or other artificial coloration. The result is a remarkably ‘invisible’ amplification that allows the character of your headphones to shine through, with minimal coloring from the amp itself. This is a significant strength for critical listening and audio reviews.

It delivers a clean, detailed sound with excellent dynamics and incredibly low noise floor, capable of driving even the most demanding headphones. Its performance rivals many separates systems, representing a remarkable achievement in the all-in-one category.
Comparisons and Alternatives
While the DX9 stands out among all-in-one amplifiers, separates systems like the Topping A90D and D90 offer slightly superior performance in certain areas, particularly dynamic range. However, these separates systems come at a higher cost and require more setup complexity. For those seeking an all-in-one solution, the DX9 offers an exceptional balance of performance and convenience.
Budget-conscious users could consider the JDS Labs Element 4 or the Niche Pitus Maximus as more affordable alternatives. The Element 4 provides a clean and simple all-in-one experience but with fewer features, whereas the Pitus Maximus leans towards a more colored and warmer sound signature.
Conclusion: Is the Topping DX9 Worth It?
The Topping DX9 delivers exceptional performance and a comprehensive feature set for its price point. Its neutral sound signature, incredible power, and low noise floor make it a top contender in the all-in-one market. While separates systems might offer a marginal performance edge, the DX9's convenience and versatility make it a compelling option for many listeners. The lack of an EQ is a minor drawback, but not significant enough to detract from its overall excellence.

Ultimately, the DX9's value proposition depends on individual priorities. For those seeking a high-performance, feature-rich all-in-one solution that delivers a transparent, detailed sound, the DX9 is a highly recommended choice. If a warmer sound signature or specific EQ adjustments are paramount, other options might be more suitable. However, in terms of overall performance and feature set, the Topping DX9 stands as a remarkable achievement in all-in-one amplifier technology.