2A-KT Optical Tube Compressor - $275 (Northeast)

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Klark-Teknik rack compressor - great sounding optical unit with LA2A-style tube warmth and 32 five-star reviews on Sweetwater. Purchased in 2024 and used maybe 5 or 6 times. I'm moving over to in-the-box processing, so no need for rack gear. Unit works great, no issues.

Note: there is a scratch on the top of the unit that occurred during rack installation - see photo.

Texting works best, and pickup is at Walgreens on River and Craycroft.

Features:
- Classic tube compressor/leveling amplifier
- Completely discrete signal path
- Premium selection of 12AX7, 12BH7, and EL84 tubes
- Lag-free optical attenuator based on vintage electroluminescent technology
- Custom-built Midas input and output transformers
- Frequency response: 10Hz–20kHz, ±1dB
- Gain limiting: 0dB–30dB
- Ultra-fast attack time: 10ms
- Release time: 50ms to 5 seconds
- Adjustable stereo-link connection
- Variable Pre-emphasis for digital audio recording and broadcasting transmission
- Vintage-style meter displays gain reduction and output
- Transformer-balanced inputs and outputs on Neutrik XLR connectors
- Rugged 2U rackmount chassis for durability in portable applications
- Auto-ranging universal switch-mode power supply

post id: 7912461320

posted: 2026-02-01 17:28

updated: 2026-05-04 05:56

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2A-KT Optical Tube Compressor - musical instruments - by owner -...

Klark-Teknik rack compressor - great sounding optical unit with LA2A-style tube warmth and 32 five-star reviews on Sweetwater. Purchased in 2024 and used maybe 5 or 6 times. I'm moving over to...