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TUBE-TECH

CL1B

Mono Compressors

Tube compressor, optical gain reduction, all-tube signal path, balanced I/O 600Ω, ratio 2:1–10:1, attack 0.5–300 ms, release 50 ms–10 s, low noise, high headroom

$6,795.00 CAD
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Description

The Tube-Tech CL 1B is a studio compressor known for its smooth, musical response and classic tube-driven character. Designed with a fully tube-based signal path, it delivers a warm and natural compression style that complements vocals, instruments, and full mixes alike. Its optical gain reduction approach allows for gentle control of dynamics without sacrificing clarity, making it a reliable choice for both subtle leveling and more noticeable compression effects.

What sets the CL 1B apart is its flexible control over attack and release behavior, including a combined mode that adapts to the shape of the incoming signal. This allows it to respond quickly to peaks while maintaining a more gradual release for sustained material, resulting in a balanced and polished sound. Whether used on vocals to add presence or on instruments to tighten performance, it provides consistent and transparent results that blend seamlessly into a mix.

Built with high-quality components and a straightforward interface, the CL 1B fits easily into professional studio setups. Its balanced connections and thoughtful design ensure dependable performance across a wide range of recording and mixing scenarios, while its signature tone continues to make it a trusted tool for achieving refined and controlled audio.

Features

All-Tube Signal Path
Delivers warm, musical compression using tube amplification without solid-state audio components.

Optical Compression Element
Uses a unique gain reduction method that avoids harsh artifacts and maintains natural sound.

Flexible Compression Control
Lets you adjust how strongly signals are compressed for subtle leveling or heavy control.

Variable Attack and Release
Allows precise control over how quickly compression reacts and recovers.

Combined Time Modes
Blends fixed and manual timing for more natural and dynamic compression behavior.

Stereo Linking Capability
Enables multiple units to work together for consistent compression across channels.

Make-Up Gain Control
Restores signal level after compression to maintain overall loudness.

Accurate Metering Options
Provides clear visual feedback for input, output, and compression levels.

Balanced Input and Output
Ensures clean signal transfer with reduced noise and interference.

Bypass Switching
Lets you instantly compare processed and unprocessed sound.

Wide Dynamic Range Handling
Supports both subtle and high-level signals without distortion.

Durable Analog Design
Built for long-term reliability with components designed to last

Specifications

General Specifications
Device Type: Tube optical compressor
Compatibility: Analog audio systems

Impedance
Input Impedance: 600 Ohm
Output Impedance: <60 Ohm

Tubes
Tube Type 1: ECC 82 1 pc
Tube Type 2: ECC 83 1 pc

Audio Performance
Frequency Response (-3 dB): 5 Hz to 25 kHz
THD+N @ 40 Hz (0 dBU): 0.15 %
THD+N @ 40 Hz (+10 dBU): 0.15 %
Maximum Output Level: +26 dBU <1 %
Maximum Input Level: +21 dBU <1 %

Noise
Noise (22 Hz–22 kHz, Gain 0 dB): < -85 dBU
Noise (22 Hz–22 kHz, Gain +30 dB): < -75 dBU
Noise (CCIR-468-4, Gain 0 dB): < -75 dBU
Noise (CCIR-468-4, Gain +30 dB): < -65 dBU

Gain
Gain Range: Off to +30 dB

Dynamic Control
Compression Ratio: 2:1 to 10:1
Threshold Range: Off to -40 dBU
Attack Time: 0.5 ms to 300 ms
Release Time: 50 ms to 10 s

Channel Performance
Crosstalk @ 10 kHz: < -60 dB
CMRR @ 10 kHz: < -60 dB

Dimensions
Height: 132 mm
Width: 483 mm
Depth: 170 mm

Weight
Net Weight: 4.1 kg
Shipping Weight: 5.9 kg

Power
Voltage: 115 V / 230 V
Frequency: 50–60 Hz
Power Consumption: 22 W

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