Yes, yes - I know that R.L. Stevenson wrote this name as "Dr. JEKYLE", but....

This is Dr. JKILL, that means "Jitter Killer".

100% jitter elimination from your SPDIF/TOSLINK audio source.

Connect JKill to Your DAC with I2S Input and system clock, and the jitter will depend only of how your clock is good!

So, with JKill - we will cook the signal for you, all other sound quality aspects are in Your hands: use good DAC, use good clock, use good amplifier, use good loudspeakers, ohh - and don't forget to prepare you Listening Room!

Including Wife Approval Factor (WAF), of course :)

Dr. JKILL Full

What is the Jitter and why it should be elliminated? Read the article.

FIFO based device is intended to use with CD/DVD/Media-players, equipped with coaxial SPDIF or optical TOSLINK outputs, providing bitperfect signal, without any influence, any rework or upgrade of these devices.

You need just a high quality double frequency clock generator (512*Fs or 1024*Fs).

Main features:

  • 2 SPDIF inputs

  • 2 TOSLINK inputs

  • Utilise DIX9211 - one of the "Best In Class" SPDIF receiver

  • 1 I2S input ready (will be implemented soon)

  • Optional 1 SPDIF and 1 TOSLNK outputs

  • 512*Fs and 1024*Fs External Clocks (optionally - 256 and 384 Fs)

  • 44.1/48/88.2/96/176.4/192 Sample Rate operation

  • DSD-64 Output from SPDIF DoP signal (optional)

  • ADC Channel for analogue input (will be implemented soon)

  • Power Amplifier and/or DAC On/OFF Control

  • Volume Control (step attenuator) of 3 types

  • DAC Digital Filter control

  • 1.8" TFT Display or 5 LEDs indication

  • Encoder or 3 push buttons control

  • IR Remote control - use YOUR Remote Control Unit (should operate in one of the 5, widely used standards)

  • Firmware upgrade form USB Disc-On-Key

  • 7.5V, 250mA (less then 2W) power consumption

You can use Front panel with:

  • TFT-display and Encoder

  • TFT-display and Push Buttons

  • LEDS and Push Button

The production of the full version was cancelled because of a small demand (due to high price and complexity - most of people wants it without TFT display, remote control, volume control and other features)), so the Lite version was developed, which have a great success.


Simplified Dr. JKILL version with SPDIF/TOSLINK Input

  • Can be used as one PCB or splitted to the separate Input PCB and JKill Lite PCB

  • 1 Coax SPDIF Input (transformer coupled)

  • 1 Optical (Toslink) Input

  • 1 Optional Input

  • 4 LED, 4 Pushbutton Input Control

  • If splitted, JKill Lite PCB have 1 I2S Input,

  • Sync (MCLK) can be from the DAC or from the optional clock generator (JKill Lite PCB has optional socket)

  • 512*Fs and 1024*Fs External Clocks (optionally - 256 and 384 Fs)

  • JKill Lite status 3 LED indication

  • 4 inputs control signals/inputs

  • 44.1/48/88.2/96/176.4/192 Sample Rate operation

  • Short delay time mode for movies

  • Firmware upgrade form USB Disc-On-KeySmall

  • 100x50 mm PCB, or two 50x50mm PCBS, if splitted.

Dr. JKill Lite 3

Special version to operate with conjunction with xVM USB Interface.

See descriptions, technical documents, firmware upgrades at download page, prices - at the shop page.

Please, read the ERRATA document!