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ESOTERIC K-07 Super Audio CD/CD Player
K-07 Super Audio CD/CD Player

Ongen Publishing "Visual Grand-Prix 2014 Summer"    Ongen Publishing "Visual Grand-Prix 2014 Summer"
CD/SACD player (below ¥1,000,000)

Ongen Publishing "Visual Grand-Prix 2014"Gold Prize    Ongen Publishing "Visual Grand-Prix 2014"
CD/SACD player category (¥300,000-500,000) Gold Prize
Stereo Sound BEST BUY 2013-2014    Stereo Sound BEST BUY
Digital Disc Player (¥200,000 - ¥500,000)

 Ongen Publishing "Audio Excellence Award 2013" Bronze Prize   Ongen Publishing "Audio Excellence Award 2013" Bronze Prize

Ongen Publishing "Visual Grand-Prix 2013" CD/SACD Player (below ¥500,000) Silver Prize    Ongen Publishing "Visual Grand-Prix 2013"
CD/SACD Player (below ¥500,000) Silver Prize

  • Stereo "The Best Value Component Of The Year"

Stereo Sound "2012-2013 Best Buy Components"   Stereo Sound "2012-2013 Best Buy Components" Second Prize

  • Stereo "Best Buy Component 2012"

Ongen Publishing 天idual Grand-Prix 2012 Summer“Silver Prize“    Ongen Publishing "Vidual Grand-Prix 2012 Summer"
CD/SACD player category (under ¥500,000) “Silver Prize“

"Conveying emotive expression of music to listeners as it was produced without exaggeration". The "K-07" is built with the philosophy that an integrated Super Audio CD player of the ESOTERIC's K series will satisfy the highest criteria of music lovers.
These features include "VOSP" Super Audio CD transport mechanism, a 32-bit dual mono D/A converter combining multiple DAC circuits, high sampling rate digital inputs and USB input supporting asynchronous transmission at 24 bits/192 kHz as well as a cutting edge high-precision clock circuit.

I-05 B Super Audio CD/CD Player
K-07 B (black color model)

VOSP Mechanism

VOSP Mechanism VOSP (Vertically-aligned Optical Stability Platform), features a specially designed shaft-mounted laser pickup assembly. This pickup design ensures that the laser optical axis is always at the center of the data track for highly accurate data reading. This pickup system is widely used in the ESOTERIC SACD transports and players including the reference level products, the P-02 and the K-01. The VOSP mechanism is rigidly clamped by a steel plate and a large diameter stabilizer made of 8mm-thick steel for superior anti-resonance and anti-vibration properties.

Dual mono D/A converters based on the concept of the K-01

The analog output circuit of the D/A converter has both high end resolution as well as natural and musical texture. Asahi Kasei's 32-bit DAC device "AK4392" is used. This component provides the heart that drives the expressive power of ESOTERIC's "K" series products. A parallel/differential output where two circuits combine per channel provides high linearity and low noise. The converters and analog output circuits, which make up a fully dual mono configuration, are located on the left and right hand sides of the board, completely separated from the digital signal processing circuit. This layout allows an excellent channel separation and high-quality playback with rich localization and sonic depth.

AK4392 is the Audio4pro™ and is a branded product of ASAHI KASEI MICRODEVICES CORPORATION that is designed for professional studio and digital audio applications. Audio4pro

High quality buffer circuits

For the final stage of analog audio output (buffer amplifier), New JRC's high end audio operational amplifier MUSES is used. These buffer circuits are laid out symmetrically for each of the hot/cold signal lines to construct a fully balanced configuration. When the RCA audio output is selected, the buffer amplifier is switched to parallel configuration. These enhancements provide the best sound quality for each of the balanced and unbalanced audio signal outputs.

Large capacity toroidal transformer that handle high speed transients with ease

Large capacity toroidal transforme Large toroidal transformer features low noise, low distortion, and high current with very high efficiency. The strong power circuits, combined with very large power capacitors, supply stable and clean power to all circuits.

Multiple D/D functions to suit multiple sources

In addition to playback at the original sample rate and word length, extensive D/D conversion modes for PCM formats include PCM up conversion to x 2 or x 4 from the original sampling frequency, using the "RDOT" algorithm, as well as PCM > DSD conversion to convert the PCM audio signal to DSD format similar to Super Audio CD. Super Audio CD is directly converted into analog signals and played back.

Digital filter "Off" mode and four types of digital filters

The K-07 features Digital Filter Off mode recommended by ESOTERIC, which is characterized by a smooth and subtle sound quality. The model also features four types of digital filters for PCM signal processing. In addition to two types of FIR (Finite Impulse Response) digital filters, two types of Short Delay digital filters (Referred to as "apodizing" filters) are installed. These filters eliminate the pre-echo in the impulse waveform to reproduce audio signal as a more natural and precise sound.

Three systems of high sampling rate digital inputs

digital inputs The K-07 features three systems of digital inputs (USB, coaxial and optical), and these digital inputs support high-sampling-rate sources up to 24 bit / 192kHz.

USB input supports asynchronous transmission up to 24 bit / 192kHz

The USB input supports asynchronous transmission up to 24 bit / 192kHz using the ESOTERIC's original driver software for PC or MAC. Additionally, a USB isolator, which prevents noise from entering from external sources such as PC or MAC, allows high quality reproduction of studio master quality sources.

VCXO high-precision clock

A high-precision VCXO (voltage controlled crystal oscillator) is used for the internal clock circuit. A dedicated stabilized power supply circuit improves the stability of the clock. The high precision audio clock signal generated by the VCXO is directly delivered to the dual mono D/A converter. This enables higher quality reproduction, substantially reducing jitter.

Clock sync function supporting 10 MHz to synchronize with an external device

high-precision clock This function allows upgrading to a higher quality sound system by connecting the unit to a high precision master clock generator when playing back Super Audio CD/CD. A 10 MHz clock is supported in addition to WORD clock (44.1kHz to 176.4kHz). When the unit is in D/A converter mode, asynchronous USB connection supports clock sync function.

Supports "Direct Master Clock Link" with an external clock generator

"Direct Master Clock Link" is our new technology originally developed for the P-02/D-02 combo for more precise, direct clocking. With this technology, the D/A converter simply uses ultra high precision "master clock (22.5792MHz)" supplied from external master clock, without a need of "sync" its operation to the master. This system enables shorter-path clocking by bypassing internal PLL circuit, and delivers more precise, focused imaging.

Excellent usability

- 32-bit precision digital attenuator function
- User selectable output level adjustment of the XLR audio output (0 dB/+6 dB)
- XLR pin assignment can be changed to match external devices (Pin 2 Hot or Pin 3 Hot)

Beautiful rounded form

The K-07 inherits its appearance from the design of ESOTERIC's flagship line of separate digital players, with the front/side/top panels made of thick aluminum and a rounded form with no screws on the top panel and corners. This beautiful design is sure to give the product a feel of elegance and enhances the pleasure of ownership.

K-07 Beautiful rounded form

Compatible disc types (playback) Super Audio CD, CD (including CD-R and CD-RW)
Analog audio
Connectors XLR connector (2ch) x 1
RCA connector (2ch) x 1
Output impedance XLR: 100 Ω
RCA: 25 Ω
Maximum output level (1 kHz, full-scale, into 10 kΩ) RCA: 2.45 Vrms
XLR (set to 0dB): 2.45 Vrms
Frequency response 5 Hz to 55 kHz (- 3 dB)
S/N ratio 115dB
Total harmonic distortion 0.0015% (1 kHz)
Digital audio output RCA connector x 1 0.5 Vp-p
Optical digital connector x 1 -15 to -21 dBm peak
Digital audio input RCA connector x 1 (input impedance 75 Ω) 0.5 Vp-p
Optical digital connector x 1 -24.0 to -14.5 dBm peak
USB-B connector USB2.0 standard
Clock sync input format Connector BNC
Supported input frequencies (±15 ppm) CD/SACD: 44.1, 88.2, 176.4, 100 kHz / 10, 22.5792 MHz
USB (HS_2) input:
44.1, 48, 88.2, 96, 176.4, 100, 192 kHz / 10, 22.5792, 24.576 MHz
Input impedance 75 Ω
Input level Rectangle wave: equivalent to TTL levels,
Sine wave: 0.5 to 1.0 Vrms (50 to 75 Ω)
General Power supply AC 230 V, 50 Hz
AC 120 V, 60 Hz
AC 220 V, 60 Hz
Power consumption 12W
External dimensions (W x H x D, including protrusions) 445 mm x 131 mm x 358 mm
(17 1/2″ x 5 1/8″ x 14 1/8″)
Weight approx. 14 kg (30 7/8 lb)
Included accessories Power cord set x 1
Remote control (RC-1301) x 1
Batteries for remote control (AAA) x 2
Owner's manual x 1
Warranty card x 1
- This product is available in three different power supply variations shown in the specification section above. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
- The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.

K-07 K-07 K-07

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