CI TECH

Repair, Service, and Parts

CI TECH repair, service, and parts

Acme Revival is an independent repair network that operates separately from the manufacturers whose devices we service. Our independence enables a repair model that exists beyond manufacturer-controlled strategies, while preserving the ability to work with manufacturers where appropriate.

Gyeonggi-do, South Korea
Manuf. Location
≈ US $30M
Annual Revenue (est)
Consumer Audio
End Use Segment

CI TECH Co., Ltd. is a South Korean electronics and information-communications equipment developer and manufacturer with operations spanning premium audio, self-service kiosks/automated document-issuance terminals, medical multimedia systems, and related ICT solutions. Its most internationally visible consumer business is HiFi ROSE, its premium audio brand, which produces network streamers, media players, DAC/streaming components, integrated amplifiers, and related high-end audio equipment; CI TECH is identified as the actual Korean manufacturer on HiFi ROSE product documentation. The company also develops and manufactures customized kiosks and has expanded into smart-hospital, PA, and AI-healthcare solutions. For OEM/end-use classification purposes, Consumer Audio is the most appropriate concise segment when referring to the CI TECH manufacturing operation associated with HiFi ROSE devices.

2 Most Seen Failures:

[Touchscreen Unresponsive or Frozen]

The touchscreen may stop responding or the display may freeze during operation. CI TECH-manufactured RS130 and RS150-series documentation recommends a forced reboot by holding the power button for more than five seconds.

[Overheating / Excessive Operating Temperature]

The unit may become excessively hot when operated for extended periods in confined or poorly ventilated spaces. Restricted heat dissipation can affect performance and, according to some model documentation, product life.

[Wi-Fi Connection Drops or Delays]

Wireless connectivity may become delayed, unstable, or disconnect entirely when reception is weak or network traffic is heavy. Moving the device or re-establishing the connection is recommended.

[Audio Dropouts During Network Playback]

Audio can intermittently cut out or break up while streaming over the Internet. Weak wireless signals, unstable radio conditions, or heavy network utilization are documented causes.

[Power or Control Switch Not Responding]

On the RA280, the operating switch can become unresponsive after exposure to severe static electricity. The documented recovery procedure is to disconnect power before restarting the unit.

[No Audio Output]

The RA280 may produce no sound when the wrong input source is selected, speaker connections are incorrect, or the volume is set to zero. These conditions are specifically listed among checks to perform before contacting service.

[Remote Control Not Working]

The remote control may cease operating when its batteries are depleted. The RA280 troubleshooting guidance recommends replacing the batteries when the remote fails to respond.

[Firmware Update Failure / System Malfunction]

Network-streamer models can encounter conditions where the product does not operate correctly or an Internet firmware update fails. RS130 documentation recommends a factory reset in these circumstances, which erases customized settings and locally stored configuration data.

[Content Volume or Tone Inconsistency]

Playback of the same content can exhibit differences in volume or tonal characteristics compared with other models or manufacturers. RS130 and RS150-series documentation attributes these variations to content files being optimized for the product's characteristics, design specifications, and intended use.

1 Acme Revival offers repair, service, and part rebuild opportunities for most CI TECH devices.

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  1. 1 Repairs are performed on a best-effort basis. Acme Revival utilizes a network of sophisticated technicians and engineers with diverse service offerings; despite this, factors that influence the repair outcome may ultimately prove unsuccessful. Acme Revival makes no claim that it can, guarantee a repair before your device is sent in for diagnostic evaluation; even then, repair and diagnostic work are not mutually exclusive. Despite well-intentioned quoting, repairs may still prove unsuccessful.
  2. 2 Per information known, researched and collected by Acme Revival and its systems at time of page publishing (September 24, 2026).
  3. *Information regarding this manufacturer/brand/organization is estimated with information collected and known to Acme Revival. This information is intended to provide insights into the spotlight entity, however may not be accurate— information is strictly of estimate nature only.
  4. **The model list shown here may not be an all-inclusive list of the EcoFlow product range. Model list has been derived per information known, researched and collected by Acme Revival and its systems for the US market.