The Basic Analog Upgrade is our most cost-effective enhancement, designed to unlock the true potential of Sony’s ES analog stages without altering their original tonal character.

In many ES CD and DAT players, the low-pass filter stage plays a crucial role in shaping the final sound. By carefully upgrading these critical analog filter op-amps to modern, high-grade audio components, we achieve:

• Smoother high frequencies
• Improved stereo separation
• Reduced harshness
• Lower background noise
• Better micro-detail retrieval

This modification preserves the original Sony ES signature while refining clarity and musicality. The result is a more open, effortless presentation with improved depth and control.

This upgrade is ideal for customers who want:

✔ A noticeable improvement
✔ Maximum performance per investment
✔ Full stability and reliability
✔ A reversible and technically safe modification

Recommended for:
Collectors who want improved performance while preserving originality.

Suitable models for this upgrade:

CD-players:

Sony CDP-X55ES
Sony CDP-X555ES
Sony CDP-X559ES
Sony CDP-X77ES
Sony CDP-X707ES
Sony CDP-X777ES
Sony CDP-X779ES
Sony CDP-XA20ES
Sony CDP-XA30ES
Sony CDP-XA50ES

DAT Recorders:

Sony DTC-59ES
Sony DTC-60ES
Sony DTC-75ES
Sony DTC-77ES
Sony DTC-2000ES

Price: €159 - €195 depending on model

For more information and prices about your specific model and how to order contact ES Audio Store.