The Signature ES Audio Store Mod is our most comprehensive analog enhancement package.

This modification addresses the entire analog signal chain — from filter stages to buffer and headphone/variable output circuitry — using carefully matched premium audio components.

What changes?

• Full analog stage refinement
• Improved current delivery and output stability
• Expanded holographic soundstage
• Blacker background
• More natural decay and tonal richness
• Improved headphone performance
• Enhanced variable output transparency

The result is a presentation that feels dramatically more spacious and refined, with enhanced micro-dynamics and effortless musical flow.

This is not a “tweak” — it is a carefully engineered refinement of Sony’s original design philosophy, executed with respect for circuit topology and electrical integrity.

Each Signature modification includes:

✔ Full analog stage optimization
✔ Stability verification via measurement
✔ Listening validation
✔ Clean, professional installation

Recommended for:
Serious collectors and audiophiles seeking reference-level performance from their Sony ES player.

Suitable models for this upgrade:

CD-players:

Sony CDP-X559ES
Sony CDP-X77ES
Sony CDP-X707ES
Sony CDP-X777ES
Sony CDP-X779ES

Price: €349 - €449 depending on model

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