IGS Audio Tubecore 500 Series Varimu Tube Compressor

The TUBECORE 500 is a full symmetric transformer balanced 500-series compressor. The structure is based on the typical vari mu solution. The TUBECORE 500 is a true tube mono compressor where compression is achieved using the remote cut-off of tube biasing. Could be used as a mono tracking compressor or (as a matched pair) as an advanced mastering tool.

Every single TUBECORE 500 is hand made with high quality, matched components (1% metal film resistors, 2.5% Wima caps). It is equipped with JJ tubes and individually calibrated to give you the unique and unspoiled experience of one of the best Vari-mu compressors in history. We have spent hundreds of hours designing the TUBECORE, to make sure that it is as simple to use as it is versatile. Not only for harmonically rich drums and guitars, but also for huge vocals and bass instruments. Two audio transformers (IGS Custom) have been used to provide excellent performance.

DEVICE TYPE
• Vari Mu Compressor: Yes

BASIC FEATURES
• Hardwire bypass: Yes
• Stereo Link: Yes

INPUT & OUTPUT
• Audio transformers: Yes, IGS Custom
• Input Impedance (balanced): 600 ohm
• Output Impedance (balanced): 600 ohm

LEVELS
• Operating Level: +4 dBu
• Max input level: +22 dBu
• Max output level: +22 dBu
• Max Gain Reduction: 30 dB
• Max. gain: 40 dB
• Noise Level: -99 dBA

TIME CONSTANTS
• Attack: 0.1 - 30 ms
• Release: 0.1 - 4s

BANDWIDTH
• Frequency response: 8 Hz - 20k Hz, +/- 1 dB

DISTORTION (@ 20 HZ - 20 KHZ)
• THD+N: 0.002% @ 0dBu

POWER
• Voltage: API Standard, internal DC-DC conversion for powering tubes (250V DC)
• Power consumption: 12W

FRONT PANEL
• VU Meters: Yes, GR (backlit)

OTHERS
• Tube set: ECC82, 6AK5 x2