Tube-Tech CL 1B Mono Opto Compressor 2010s – Blue

Description

Tube Tech CL 1B tube compressor. Very musical and flexible unit. Recently tested and in excellent working order. Serial #12926

Includes:

• EHX&Sovtek Vacuum
• 115-230V(Now is 230)

I recently purchased used from Musician’s Friend. As seen in pictures, the previous owner put small marks on face for settings and faded marks on the back. The unit came without the meter knob which only costs $5 from Tube Tech’s US servicer, TransAudio Group. Setting can be adjust by hand, but I usually left it on the Compression setting.

About this item:

The Tube-Tech CL 1B Mono Opto Compressor is a high-end, vacuum tube-based optical compressor that has become a staple in professional recording studios worldwide. Originally designed in the 1980s, the CL 1B has built a reputation for its smooth, musical compression and transparent sound, making it a favorite among top engineers and producers. The 2010s model is part of the modern iteration of this iconic piece of equipment, retaining all of its legendary qualities while incorporating updates for improved performance and reliability.

The Tube-Tech CL 1B is known for its incredibly musical compression, adding warmth and presence without coloring the sound too much. The optical design ensures that the compressor responds smoothly and naturally, making it ideal for a wide range of applications from vocals and drums to full mixes. The blue version adds a sleek aesthetic to its rugged build, while maintaining its professional-grade functionality.

With its tube-based signal path and optical compression technology, the CL 1B is ideal for artists and engineers looking to add warmth, depth, and richness to their sound. Whether you’re processing vocals, bass, or any other instrument, this compressor is revered for its ability to enhance the sound without sacrificing clarity or transparency.

Features:

• Optical Compression: The CL 1B uses optical compression technology, which is known for its smooth and musical compression characteristics, making it perfect for adding natural dynamics control without distorting the source material.
• Tube Signal Path: Powered by vacuum tubes, the CL 1B adds warmth and depth to the sound, enriching it with harmonic content and making it especially useful for instruments that need a little extra warmth, like vocals and bass.
• Versatile Compression: The compressor excels in a wide range of applications, from single-track processing to mix buss compression. It’s ideal for vocals, drums, bass, and more, offering excellent transient control and maintaining musicality.
• Sidechain Filtering: The sidechain filter allows for more precise compression, enabling the user to tailor the response based on the frequency content of the incoming signal.
• Transparent Operation: Despite its warm and musical characteristics, the CL 1B operates transparently, ensuring that the source sound is preserved while the dynamics are controlled.
• Sleek Blue Finish: The 2010s model comes in a modern, stylish blue color, which adds an aesthetic appeal to the classic design of the compressor.
• Rackmountable: The unit fits into a standard 19-inch rack space, making it easy to integrate into any professional studio setup.

Specifications:

• Type: Mono Optical Compressor
• Compression Type: Optical (opto-isolator based design)
• Signal Path: Tube (Vacuum Tube Signal Path)
• Power Supply: External (AC powered)
• Frequency Response: 20 Hz – 20 kHz (+/- 1 dB)
• Input Impedance: 20 kΩ (balanced)
• Output Impedance: 50 ohms (balanced)
• Dynamic Range: Greater than 100 dB
• Compression Ratio: 1:1 to 10:1 (variable)
• Attack Time: 0.5 ms to 50 ms (variable)
• Release Time: 0.1 seconds to 2 seconds (variable)
• Sidechain Filter: High-pass filter with adjustable frequency (typically 50 Hz to 200 Hz)
• Threshold Range: -40 dB to +20 dB
• Make-Up Gain: 0 dB to +20 dB
• Bypass: True bypass switch for unprocessed signal
• Metering: Input and output level metering; gain reduction meter
• Construction: Rackmountable, 19-inch standard, steel chassis
• Weight: Approx. 12 kg (26 lbs)
• Dimensions: 19” x 3.5” x 10” (W x H x D)
• Color: Blue finish (modern version)

The Tube-Tech CL 1B Mono Opto Compressor (2010s, Blue) is a legendary, tube-driven optical compressor that offers incredibly smooth, transparent compression with a warm, musical character. Its optical design ensures that it responds naturally to dynamic changes, making it perfect for tracking vocals, bass, drums, and other instruments. The tube signal path adds a layer of harmonic richness, making it a top choice for professionals seeking to enhance the natural sound of their recordings.

With its versatile sidechain filtering, transparent operation, and sleek blue finish, the CL 1B remains one of the most respected compressors in high-end studios. Whether you’re working on a single track or using it for overall mix control, the Tube-Tech CL 1B provides unparalleled sonic quality, making it a must-have tool for both seasoned professionals and up-and-coming engineers.