OP19A-OP16A Plus 2CH Output Ultra Precision OCXO 10MHz Master Clock

★This new product will go on sale from February 25th. Therefore, please understand that it will be displayed as "Sold out" until February 25th.

Introducing the Flagship Master Clock, a Culmination of Cybershaft's Expertise and Experience

・The + (Plus) series is a high-performance master clock from Cyber Shaft that has been thoroughly refined from previous models and can be confidently recommended for both performance and reliability.
・This product is equipped with 2-channel output and is compatible with a wide range of systems, from single DAC systems to systems that require multiple 10MHz inputs, such as hubs.
・It uses a brand new OCXO unit that has undergone long-term calibration and selection to ensure only highly stable units are installed.
・It features an ultra-low noise, ultra-high PSRR power supply circuit with six next-generation LT3045 linear regulators.
・In addition to 2-channel models, the + (Plus) series is also available in 4-channel output models.

★We will ship your order approximately 3-4 weeks after your order is confirmed.

+ (Plus) Series Features:

Features:

・This unit features a high-performance OCXO unit, rare in audio equipment, with phase noise of less than -119dBc/Hz and Allan variance of less than 2.3E-13. (OP19A+)
・The OCXO unit is housed in a sturdy steel box constructed with magnetically shielding plates and heat-shielding boards, ensuring optimal performance.
・Two output channels are convenient for applications requiring multiple clock signals, such as single DACs or hubs. Each channel can be set to 50Ω or 75Ω impedance. (Utility Model Patent Registered)
・Each channel's output GND can be individually configured to connect to the unit's GND or isolate it. (Utility Model Patent Registered) This allows for precise adjustments to the complex GND configurations that vary from audio system to audio system.
・The clock output level can be switched between 1.6Vp-p and 3.0Vp-p, enabling connection to virtually any audio device. (All channels have common switching)
・The circuitry thoroughly eliminates noise with six LT3045, a next-generation linear regulator with ultra-low noise and ultra-high PSRR.
・The internal circuit board uses a 70μm thick copper foil, twice the thickness of the standard. The internal layout, which was thoroughly tested, has been refined.
・The chassis bottom features a powerful vibration-damping structure with a total thickness of 10.4mm, made of 2mm thick aluminum and 8.4mm thick laminated steel. The board is surrounded by a 5.2mm thick laminated steel case, providing the strongest magnetic shielding of the entire series.
・hree-point support feet made of die-cast aluminum ensure stability on any surface. Optional spike insulators can be installed with 4mm screws.
・Precision-calibrated measuring equipment is used to measure clock characteristics. Phase noise and Allan variance are plotted for each unit to ensure clock quality.
・Comes with a two-year free repair warranty.

Output GND Insulation / Enclosure GND Selection Function:

Choose between two grounding configurations for the output GND: insulation from chassis GND or connection to housing GND. Using a common ground for the output GND can lead to ground loop noise, especially when multiple devices are interconnected. To combat this, it's typically preferable to insulate each output's GND. Yet, in some systems where devices have consistent grounding, grounding the output GND to the housing GND might yield superior noise resistance. Given the diverse audio environments, select the option best suited for yours. This device also includes a terminal for housing GND on its base plate.

Power Supply System:
Equipped with a 6-unit parallel circuit that maximizes the performance of the new generation linear regulator LT3045

< AC/DC Dual-Purpose Model / DC-Only Model >

 DC Input → LT3045 x 6 in parallel (RMS Noise 0.33uV) → DC 12V → Main Circuit/OCXO.

Connecting multiple LT3045s in parallel can reduce the device's internal semiconductor noise.

[Example of self-noise] 0.8uV_RMS with one LT3045 / 0.46uV_RMS with three parallel units / 0.33uV_RMS with six parallel units

Furthermore, by configuring six LT3045s in two parallel stages, the ripple rejection ratio (PSRR) is over 100dB.

OCXO Characteristic Selection Value:

Our product features an OCXO unit, stabilized and calibrated over several months, ensuring optimal performance as an audio clock. We don't simply gauge the built-in OCXO unit's output characteristics. Our rigorous calibration measures from the product's output terminal, providing a holistic view, inclusive of the buffer circuit's performance.

[ Selection Characteristic Value ]

* We have changed the previously announced reference value for each grade to the selection value actually used by us and released it. All products already sold are shipped with the OP selection values in this table.

OP grade guarantee card :

An "OP grade certificate" with hologram is always attached to each OP grade product.
A tamperproof sticker is attached in the center. A hologram is printed on the right edge. In addition, a hologram sheet with the serial number described in the option grade certificate will be attached to the OCXO unit inside the main unit. Please be sure to check when purchasing for second use.

Compatible audio products:

ESOTERIC Grandioso T1,K1X,K1,P1X,P1X,P1,D1X,D1,K-01XD,K-01Xs,K-01X,K-01,K-03XD,K-03Xs,K-03X,K-03,K-05Xs,K-05X,K-05,K-07Xs,K-07X,K-07,,D-02X,D-02,D-05X,D-07X,P-021,P-02X,N-01XD,N-01,N-03T,N-05XD,N-05,G-0,G-0s,G-0Rb,G-02,G-03X,G-25U,TASCAM CG1000 / dCS　Vivaldi clock,Paganini clock,Scarlatti Clock / MUTEC iCLOCK,MC-3+,MC-3+USB / Antelope Audio Isochrone OCX HD,OCX-V,OCX,TRINITY,PURE2,ZODIAC PLATINUM,Amari / VMV SMSL D3 / DELA N1-S38 / Phasemation HD-7A / SFORZATO DSP-Vera,DSP-Dorado,DSP-Pavo,DSC-Vera,DSC-Drado,DSC-Grus,DSP-01,DST-01,DSP-03,DSP-05 / TEAC UD-701N,UD-503,UD-505,UD505-X,NT-503,NT-505,NT-505-X / SPEC RMP-X1 / Sound Warrior SWD-CL10 (OCX) / TechDAS D-7,D7i / M2TECH EVO DAC TWO PLUS,HIFACE EVO TWO / CH Precision C1,D1 / Triode TRV-CD6SE/BK / aurender W20,N20,N150 / soulnote D-3,D-2,S-3 / SOtM sMS-200ultra,tX-USBultra,SOtM sNH-10G (require master clock input function) /GUSTARD U16,U18,R26,A26,X26pro / Singxer SU-2 / iFi Audio Pro iDSD (Signature) / UpTone Audio EtherREGEN / Audio Gd DI-20HE,DI-20,R-7HE (version 2020),R-7 (version 2020)
Other, master clock generator with 10MHz clock input, CDP, DDC, DAC, Audio HUB, etc.
*If you are uncertain about the specifications of the device you are using, please contact us with the model name.

Specification :

Accessories: instruction manual, test report, and phase noise/Alan Deviation characteristic graph
( BNC and AC power cable is not included. )
Output: 10 MHz x 2 lines, sine wave
Output level: LOW: 1.6V p-p HIGH: 3.0V p-p (2 ch common switching 50 ohm)
Output impedance: 50 ohms/75 ohms Each system is individually switchable
Output GND potential: Main body GND/insulation can be switched (each system can be switched independently)
Body size: W141mm x D210mm x H90mm (including protrusions) Optional use H100mm
Weight approx. 3 kg
External DC power supply: DC 13.5V-17V 1A 
External DC plug standard: 2.1 mm/5.5 mm screwable
○ 2-year free repair guarantee
*Design and specifications are subject to change without notice for improvement.

< Q & A >
Q: Has the oven monitor LED been removed?
A: Yes, the oven monitor LED has been removed. In past cases with our products, there have been no cases where only the oven on the OCXO failed. There have been about three cases where the OCXO itself failed, but in those cases, the output signal was lost and it was not possible to lock on the connected device, so it was immediately obvious. Unfortunately, there have been over a dozen cases where the oven monitor LED failed. This was counterproductive, as the monitor function itself, which is supposed to determine the failure, was the most common cause of failure. Therefore, the oven monitor LED has been removed.