2022
| 12 | New Product : NTEC (Novel Sound Technology) web control based PA system extension development |
| 08 | New Product : NTEC Audio Matrix (NAM12) |
| 07 | New Product : NTEC system renewal (NCS01, NRG16, NRT16) |
| 03 | Designated as an excellent product by the Public Procurement Service: Smart broadcasting system with high-efficiency sound technology (designation number: 2022025) |
| 01 | Designated as an overseas procurement market entry company (G-PASS) |
2021
| 12 | New Product : High-efficiency amplifier (PRODIGI500Q : 1H, 2000W, eff 93%) |
| 08 | New Product : High-efficiency amplifier (PRODIGI300Q : 1H, 1200W, eff 93%) |
| 06 | Start Development : Upgrade version of NTEC(PA system based on web control) |
| 03 | Green technology certification : High-efficiency power amplifier technology (1H, 3000W, eff 93%) |
| 03 | Green technology product : Power amplifier for public address (1H, 3000W, eff 93%) |
2020
| 08 | Patent registration : Broadcasting output system and method |
| 08 | Good Software certification (1st class) : Smart remote control broadcasting system V1.0 |
| 05 | Patent registration : High-efficiency amplifier with integrated power supply and amplification part |
| 04 | New Product : High-efficiency amplifier (PRODIGI750Q : 1H, 3000W, eff 93%) |
| 03 | Copyright registration : NUFI(NTEC User Friendly Interface) |
| 02 | New Product : NTEC(Novel sound Technology), PA system based on web control |
| 01 | Patent registration : Short circuit proctor, Line short Protector |
2019
| 09 | Patent registration : Overcurrent protection device for audio |
| 08 | New Product : Module to protect the amplifier from short circuit in real time |
| 07 | Selected as a small hidden champion in Bucheon in 2019 |
| 02 | New Product : Amplifier that maximizes efficiency and stability (PRODIGI series : 1H, eff 87%) |
| 01 | Selected as a small hidden champion by the Ministry of Employment and Labor in 2019 |
2018
| 09 | New Product : RX equipment with a function of short circuit protector (KSC-SCP32D) |
| 06 | New Product : Two types of short circuit protector (SCP16R, SCP16W) |
| 03 | Patent registration : Real-time sound quality correction apparatus and method in audio device |
| 01 | Patent registration : Multi-channel simultaneous short circuit protector and control method |
2017
| 12 | Patent registration : Multi-switching device for sound equipment capable of self-diagnostics |
| 10 | 40th anniversary of Karak Electronics |
| 07 | Patent registration : Real-time noise level change detection device, and noise level change analysis system |
| 07 | Patent registration : A device for discriminating abnormal signals by analyzing changes in audio signals, and a device for suppressing generation of abnormal signals |
| 06 | Patent registration : Noise change detection device using acoustic sensor including IoT location-based information and speaker control method |
| 04 | Quality cerification : PA system with a function of short circuit protector |
| 01 | Patent registration : Speaker distortion signal detection device |
2016
| 12 | Patent registration : How to display the fast frequency response of a digital filter |
| 07 | ISO14001:2004 |
| 07 | ISO9001:2008 |
| 04 | New product : High quality sound DSP system based on variable filter bank for Pro Audio |
| 01 | Designated as an overseas procurement market entry company (G-PASS) |
2015
| 12 | Patent registration : Output control method for amplifier with built-in DSP |
| 05 | Patent registration : How to synchronize signals during an audio stream |
| 05 | Patent registration : Audio Stream Forming Device Using Topology |
| 04 | Excellent performance certification : PA system with a function of real-time short circuit protector |
| 02 | Quality certification : Digital PA system |
2014
| 11 | Patent registration : Real-time analysis system of speaker line |
| 07 | New product : PA system with a function of short circuit protector |
| 05 | New product : Pro Audio power amplifier with built-in DSP |
| 04 | Procurement Excellent Product Certification renew : Ring redundant network PA system |
| 03 | ISO14001:2004 |
| 03 | ISO9001:2008 |
2013
| 10 | Patent registration : Real-time data hierarchical transmission system with minimized time loss such as a network and its method |
| 09 | Excellent performance certification : Amplifier with a function of short circuit protector |
| 07 | New Excellent Product certification renew : PA amplifier supporting ring redundant network |
| 03 | Designated as a PQ company for overseas procurement market |
2012
| 12 | Patent registration : Circuit design for short circuit protector |
| 07 | Quality certification : CE about PRODIGI 2250/2500 |
| 05 | Quality certification : CE about PRODIGI 2800/4800/6800 |
| 03 | Quality certification : CE about PRODIGI 4120/4240 |
2011
| 07 | Patent registration : How to operate the button for PA system |
| 07 | Quality certification : CE about PRODIGI 1200 |
| 04 | Procurement Excellent Product Certification : Ring redundant network PA system |
| 03 | ISO14001:2004 |
| 03 | ISO9001:2008 |
