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Esoteric K-01X SACD/CD Player
Esoteric K-01X SACD/CD Player

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Product Code: ESO1000001
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Four years after the release of the K-01—the world’s leading all-in-one digital player—the new K-01X debuts as a more compact version of Esoteric’s flagship Grandioso model. Utilizing the same type of highly rigid chassis construction as the Grandioso and a similar four-transformer power supply, it integrates the Grandioso P1’s high-precision VRDS-NEO “VMK-3.5-20S” turntable with two independent monaural DAC units derived from the Grandioso D1 design, each configured with a parallel array of 8 individual converters, which are summed to optimize linearity and minimize noise.

Electronic circuitry has also been further improved with the latest technologies, including a new AK4495S DAC IC, an advanced 35-bit D/A processing algorithm, an HCLD buffer amp, a DSD-compatible USB interface, and a large, low phase noise clock, all ensuring the K-01X achieves the absolute pinnacle of sound quality.

The Features

USB Support for 2.5/5.6 MHz DSD, 384 kHz/32-bit PCM, and Asynchronous Transmission

The USB input supports asynchronous transmission and rates up to 2.8/5.6 MHz DSD and 384 kHz/32-bit PCM. Esoteric’s original PC driver software achieves outstanding playback of even studio-master-quality source files. DoP and ASIO 2.1 are also supported.

VRDS-NEO “VMK-3.5-20S” transport mechanism

The culmination of Esoteric’s most advanced mechatronics know-how, the VRDS system radically improves the reading precision of Super Audio CD/CD discs by mechanically correcting for surface run-out. The K-01X’s VRDS -NEO VMK-3.5-20S drive also features two sets of specially selected ball bearings supporting a duralumin turntable constructed to micron-level accuracy, and a 20mm-thick steel turntable bridge. The combined mechanical structure weighs an impressive 5.2kg (12kg including the rigid base).
The drive employs proven Esoteric technologies, including a high-flux-density magnet-driven coreless three-phase brushless spindle motor, a thread feed control derived from the thinking behind the P-0, and a shaft-sliding pickup which consistently illuminates the disk with a precisely perpendicular beam of laser light. Additionally, the disc tray features a silent shutter mechanism* that further ensures the ultimate in operating precision.
* This mechanism closes the shutter when the tray is retracted, then mechanically locks it into place in the front panel to ensure a more secure environment that minimizes the effects of extraneous noise and airborne contaminants, etc. on sound quality.

VS-DD* Spindle Servo Driver and Proprietary Toroidal Power Supply.

At the heart of the VRDS-NEO drive is a spindle driven by Esoteric’s proprietary VS-DD servo driver circuit. This uses a discrete three-channel amplifier to optimize the motor drive current, minimize vibration and provide ultra-smooth spindle operation and high-accuracy servo control. The K-01X is also equipped with a proprietary toroidal power supply that greatly enhances noise isolation.
* VS-DD = VRDS Spindle Discrete Driver

Grandioso D1 Lineage Dual Mono D/A Converters with Separate Left and Right Channel Power Supplies.

The D/A converter uses the same design philosophy as our Grandioso D1. Incorporating Asahi Kasei Microdevices Corporation’ s 32-bit AK4495S DAC IC and MUSES 02 operational amplifier,* this exceptional DAC uses 8 parallel/differential circuits with 16 outputs driving each channel to achieve outstanding linearity and low distortion.
Like the Grandioso D1, this D/A converter also features fully independent power transformers and power supply circuits for each channel to create a true dual mono configuration. The generous power supply capacity and total channel separation enabled by this arrangement provides excellent dynamics, with realistic stereo imaging and exceptional resolution of fine detail.
AK4495S is a branded product of Audio4pro™ and designed for professional studio and digital audio applications.

The Specs

Compatible disc types Super Audio CD, CD (CD-R/CD-RW compatible) Analog audio output Jacks XLR jacks (2 channel) x 1 RCA jacks (2 channel) x 1 Output impedance XLR: 40Ω RCA: 10Ω Maximum output leve
(1 kHz, full scale, 10 k ohms) XLR (Gain: 0 dB): XLR: 4.8Vrms RCA: 2.4Vrms Frequency response 5Hz to 40kHz (-3dB)) Signal-to-noise ratio (S/N) 117dB Total harmonic distortion 0.0006% (1kHz) Digital audio output Coaxial RCA jack x 1 0.5 Vp-p/75 ohms Digital audio input Coaxial RCA connector x 1 (input impedance 75 ohms) Optical digital connector x 1 -24.0 to -14.5 dBm peak USB port B connector USB 2.0 / 192 kHz-24 bit async. Clock synchronization input format Jack BNC Input impedance 75 ohms Input level Rectangle wave: equivalent to TTL levels Sine wave: 0.5 to 1.0 Vrms/50 to 75 ohms GENERAL Power supply Power supply EUROPE AC 230 V, 50 Hz
USA/CANADA AC 120 V, 60 Hz
KOREA AC 220 V, 60 Hz Power consumption 27 W External dimensions
(W x H x D) 445 x 162 x 438 mm (17 1/4" x 6" 3/8 x 13 1/4") (including protrusions) Weight 31 kg (68 3/8 lbs) Accessories Remote control unit (RC-1315) x 1
Batteries (AA) x 2
Power cord set x 1
Felt pads x 3
Owner's manual x 1
Warranty card x 1

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