ESS ES9018 vs. Texas Instruments: A Battle of DAC Giants

In the realm of digital-to-analog converters (DACs), ESS Technology's ES9018 and Texas Instruments' (TI) PCM1795 stand as two formidable contenders. Both DACs boast impressive capabilities, but they also differ in certain key aspects. This comprehensive analysis will delve into the intricacies of each DAC, comparing their performance, features, and design philosophies.

Performance Comparison

THD+N

Distortion, measured as Total Harmonic Distortion plus Noise (THD+N), is a critical parameter for DACs. The ES9018 boasts an ultra-low THD+N of -122 dB, while the PCM1795 achieves a respectable -116 dB. This difference is perceptible in audio playback, with the ES9018 delivering a cleaner and more transparent sound.

Dynamic Range

The dynamic range of a DAC refers to the difference between the loudest and quietest signals it can reproduce without distortion or noise. The ES9018's dynamic range is an astonishing 135 dB, outperforming the PCM1795's 120 dB. This provides a wider range of expressiveness, with the ES9018 capturing the full nuances of musical passages.

Sampling Rate

The sampling rate determines the highest frequency a DAC can reproduce accurately. Both the ES9018 and PCM1795 support sampling rates up to 384 kHz. This is ample for most audio formats, including high-resolution audio sources.

Features

DAC Architecture

The ES9018 employs a proprietary HyperStream II DAC architecture, which uses a multi-bit topology with an oversampling rate of 512x or 1024x. This architecture reduces distortion and improves sound quality. The PCM1795, on the other hand, features a Delta-Sigma DAC architecture, which has a lower oversampling rate (256x) but offers excellent noise rejection.

Filter Types

The ES9018 and PCM1795 both offer multiple filter options to tailor the sound to the listener's preferences. The ES9018 provides four digital filters, while the PCM1795 offers six. These filters vary in their frequency response and roll-off characteristics.

Connectivity

Both DACs feature a wide range of connectivity options. The ES9018 supports balanced XLR and single-ended RCA outputs. The PCM1795 has both XLR and RCA outputs, as well as an I2S interface for seamless integration with other digital components.

Design Philosophy

ESS Technology prioritizes transparency and accuracy in its DAC designs. The company's ES9018 is known for its exceptionally low distortion and wide dynamic range, delivering a sound that is true to the original source material.

Texas Instruments, on the other hand, focuses on flexibility and cost-effectiveness. The PCM1795 offers a versatile feature set and a competitive price point, making it a popular choice for a wide range of audio applications.

Stories and Lessons

Story 1: The Audiophile's Dilemma

An audiophile struggled to decide between the ES9018 and PCM1795. He had a high-end stereo system and wanted a DAC that would bring out the best in his favorite music.
After extensive research, he decided on the ES9018. He was astounded by its low distortion and wide dynamic range. The ES9018 revealed nuances in his music that he had never heard before.

Lesson: For those who prioritize sound quality above all else, the ES9018 is an excellent choice.

Story 2: The Budget-Conscious Enthusiast

A budget-conscious enthusiast wanted to upgrade the sound of his home theater system. He had limited funds but still desired a high-quality DAC.

He opted for the PCM1795. Despite its lower dynamic range compared to the ES9018, the PCM1795 still delivered excellent sound quality for the price. He was satisfied with the improvement in sound over his previous DAC.

Lesson: The PCM1795 is a great option for those who want high-quality sound without breaking the bank.

Story 3: The System Builder's Choice

A system builder needed a DAC for a high-end home audio system. He required a DAC that was not only high-performing but also versatile and easy to integrate.

He chose the PCM1795. Its multiple connectivity options and flexible filter selection allowed him to customize the sound to match the specific speakers and listening environment.

Lesson: The PCM1795 is an ideal choice for those who need a DAC that can be tailored to their specific needs.

Effective Strategies

Choosing the Right DAC for Your Needs

Consider your audio system and listening habits when selecting a DAC. If you demand the highest sound quality and are willing to pay for it, the ES9018 is the clear winner. For those on a tighter budget or who prioritize versatility, the PCM1795 is a great option.

Using Different Filters

Experiment with the different filter options to find the one that best suits your system and listening preferences. Some filters may emphasize certain frequency ranges or reduce perceived noise.

Pairing with High-Quality Components

A high-quality DAC should be paired with equally high-quality components. Use high-quality cables and a clean power supply to ensure optimal performance.

Tips and Tricks

Break-In Period

Some users report that DACs require a break-in period of several hours before reaching optimal performance. This is especially true for DACs with multi-bit architectures like the ES9018.

Matching Output Levels

Ensure that the DAC's output level matches the input level of your amplifier or other components. Mismatched levels can result in clipping or distortion.

Firmware Updates

Check the manufacturer's website regularly for firmware updates. Firmware updates can improve performance and add new features.

Pros and Cons

ESS ES9018

Pros:
* Ultra-low distortion
* Wide dynamic range
* Proprietary HyperStream II DAC architecture

Cons:
* Higher price point

Texas Instruments PCM1795

Pros:
* Excellent sound quality for the price
* Versatile feature set
* Multiple connectivity options

Cons:
* Lower dynamic range than the ES9018

Tables

Table 1: Performance Comparison

Table 2: Features Comparison

Table 3: Pros and Cons Comparison

Conclusion

The ESS ES9018 and Texas Instruments PCM1795 are both exceptional DACs that offer impressive performance and features. The ES9018 takes the edge in terms of sound quality, with its ultra-low distortion and wide dynamic range. The PCM1795, on the other hand, excels in versatility and affordability. Ultimately, the best choice depends on individual budget, listening preferences, and system requirements.