The IGS 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 a 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 IGS 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 we added the second one for your comfort and quick A/B comparing.
“We have spent hundreds of hours designing the TUBECORE to make sure that’s simple to use and versatile.”
The design of the IGS Tubecore is based on the possibility to replace the tubes. As a user, you can choose between a few types: 6N1P-EW (6N3P-EW) – standard set of tubes, “standard” IGS compression, 6BC8/6BZ8 – tight, transparent, punchy compression, 6386 – legendary compression, by famous twin triode, 5670 – deep and dark tube compression. The User’s Manual describes in detail how to replace tubes, so it is quick and straightforward.
The sound qualities of the IGS Tubecore can be changed by changing the tubes in the back of the device. You can achieve the following effects:
- 6N1P-EW – standard set of tubes, “standard” compression,
- 6BC8/6BZ8 – tight, transparent, punchy compression,
- 6386 – legendary compression, by famous twin triode,
- 5670 – deep and dark tube compression.
It is important to use matched tubes for best channel convergence. You can also use different tubes for Mid and Side channels – feel free to experiment. There is no risk of damaging the Tubecore 3U once you put correct tubes in correct sockets. However, it might be necessary to calibrate the unit after the tube swap. You can do it on your own (follow the Calibration Procedure chapter) or let the qualified personnel to do it for you.
Every single IGS Tubecore is hand made with high quality, matched components (1% metal film resistors, Wima caps). It is equipped with 6N1P-EW (6N3P-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
- TUBECORE uses 24 step Elma switches.
- The user decides how the device should sound.
- We have spent hundreds of hours designing the TUBECORE to make sure that’s simple to use and versatile.
