IGS Audio Tubecore Mastering Vari-Mu Compressor #664/2023 (Used)

The IGS Audio Tubecore is a fully symmetric transformer balanced stereo mastering compressor. The structure is based on the typical vari-mu solution. Apart from the classic INPUT, THRESHOLD and OUTPUT controls it introduces switchable high pass filter in the sidechain, parallel compression (MIX knob), independent ATTACK and RELEASE switches and user replaceable tubes accessible from the back of the unit.

The Tubecore was designed as a studio mastering compressor. It is built using the 3U enclosure, which improves front panel clarity and makes it easier to replace tubes located at the back. The compressor allows you to work either in dual mono or mid/side mode (M/S). The Mode switch has two bypass positions – they both do the same, but IGS has added the second one for your comfort and quick A/B comparing.

The Tubecore is handmade with high quality, matched components (1% metal film resistors, Wima caps). It is equipped with 6N1P-EW NOS tubes and individually calibrated to give you the unique and unspoiled experience of one of the best vari-mu compressors in history. It is equipped with Carnhill and Sowter audio transformers.

FEATURES:

• Fully symmetric transformer-balanced stereo mastering vari-mu compressor
• INPUT, THRESHOLD and OUTPUT controls
• Switchable high pass filter in the sidechain, parallel compression (MIX knob), independent ATTACK and RELEASE switches
• Mode switch with two bypass positions
• 1% metal film resistors and Wima caps
• Carnhill and Sowter audio transformers
• 3U 19" rack-mount chassis