Product Description
In addition to AES/EBU (XLR) and optical inputs, the K1XE features an asynchronous USB-B port supporting DSD 22.5MHz and PCM 384kHz/32-bit resolution. All digital inputs to the DACs are routed through isolator circuits to eliminate noise interference. The Grandioso K1XE also includes a digital filter switching function (ES-Link 5 input: Rdot/off; other inputs: Fir/Rdot/off) and a PCM-to-DSD conversion function. These features allow users to customize sound quality according to their preferences.

The Grandioso K1XE supports Esoteric’s proprietary ES-Link 5 ultra-wideband digital transmission standard and can connect to Grandioso N1T network audio transport using two HDMI cables. By connecting the Grandioso N1T to the Grandioso K1XE, you can enjoy both Super Audio CD and network sources, taking full advantage of the outstanding sound quality of the Grandioso K1XE’s built-in Master Sound Discrete DAC G2.

Grandioso N1T + Grandioso K1XE
ES-Link 5
ES-Link 5 is an ultra-wideband digital interface developed exclusively by Esoteric. The ES-Link 5 supports up to 22.5MHz DSD or 768kHz/48-bit PCM using two HDMI cables. The HDMI multi-cable configuration is used for the transmission of fully balanced audio data, LR clock and bit clock signals. Unlike conventional digital transmission, no processing is required for signal modulation at the sending end or for demodulation at the receiving end, thus significantly reducing the digital processing load on the DAC to achieve pure digital transmission.
Grandioso K1XE – Key Features
- “VRDS-ATLAS” Super Audio CD Transport Mechanism: Manufactured in-house, featuring an exceptionally rigid, heavyweight platform engineered for outstanding mechanical precision.
- Master Sound Discrete DAC G2: New-generation FPGA based Multi-Level ΔΣ DAC, fully designed and manufactured in-house using precisely selected discrete components.

- ES-Link Analog: Esoteric’s proprietary current signal link with preamp, provides super authentic sound.
- Independent ×5 Linear Power Supplies (Dual Mono DACs/Transport Mechanism/Digital Audio/Microcomputer): Provides powerful clear sound.

- Low-Feedback Discrete DC Power Regulator: Contributes to live and open sound quality.
- External Power Supply Connectivity: Compatible with the Grandioso PS1XE
- ES-Link 5: Esoteric’s proprietary ultra-wideband link with Grandioso N1T network audio transport.

- Wide Range of Digital Connectivity: ES-Link 5 ×1 [L/R], USB ×1, XLR ×1, Opt ×1.
- Master Sound Discrete Clock for Digital Player: Ultra-high precision internal clock circuit.
- 10MHz Clock Sync Capability: Compatible with the Grandioso G1X master clock.
- Multi-Layer Chassis: Prevents interference between circuit components.
- Semi-Floating Top Panel: Enhances sonic openness.
- Advanced Isolation Feet: Provides focused sound and an open soundstage.

: New to the XE generation.
Architectural Sophistication
To achieve its ultimate design goal of “Reproducing The Master Sound”, the Grandioso K1XE chassis optimally controls all vibrations that affect sound quality. The mechanical engineering of the chassis is comparable to that of a Formula 1 car, with the balance between rigidity and flexibility pushed to the limit. The sleek and clean shape of the chassis is a testament to its high level of perfection. The cabinet, which requires rigidity, extensively utilizes heavyweight aluminum blocks to ensure no resonance, while the top panel features a semi-floating structure for a more open sound.

The double-layer structure of the chassis interior ensures the shortest possible signal path for optimal sonic performance. The audio boards are located primarily on the top layer, while the power circuits and transformers are located on the bottom layer. This configuration shields the audio circuitry from magnetic flux leakage and vibration while effectively minimizing the power supply wiring.
Esoteric’s unique patented isolation foot, which integrates a spike and spike pad, has been further refined and developed. Suspended from the lower chassis, the top of the foot connects to the lower chassis under the weight of the unit when placed. The top of the foot has been tapered to a conical shape to minimize the contact area between the chassis and the foot. The bottom of the foot (integral spike pad) is also concave in a ring shape so that it touches the floor only at the edges, with added slots to disperse resonant modes. By minimizing the contact area between the chassis and the foot, as well as between the spike pad and the floor, vibration control has been optimized, resulting in sharper focus and a more open sound.

A compact and simple remote control is included that can also operate Esoteric amplifiers. The functional design features buttons used for each operation scenario on both sides of the remote control, and the smartphone-sized aluminum body, which fits comfortably in the hand, is achieved through advanced metal processing. Esoteric’s new approach is a design that allows you to experience thoughtful operability and craftsmanship every time you pick it up.





