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IGS Audio Tubecore 3U Mastering Varimu Compressor Tubes
IGS Audio Tubecore 3U Front
IGS Audio Tubecore 3U Rear
IGS Audio Tubecore 3U Top Left
IGS Audio Tubecore 3U Bottom Right
IGS Audio Tubecore 3U Box
IGS Audio Tubecore 3U Box Open
IGS Audio Tubecore 3U PSU Front
IGS Audio Tubecore 3U PSU Rear
IGS Audio Tubecore 3U Rear

IGS Tubecore 3U

Regular price $3,195

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IGS Tubecore 3U Vari-mu Compressor
In stock ready to ship!

The Tubecore 3U is a fully symmetric transformer balanced stereo mastering compressor. The structure is based on a 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.

Free shipping in the USA with Fedex Ground
Retro Gear Shop is an Authorized IGS Audio Dealer.
Brand New with full Warranty.

Any questions, contact us!
The Tubecore was designed as a studio mastering compressor. It is built using a 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 function, but we added the second one for your comfort and quick A/B comparing.

The design of the Tubecore 3U 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, it is quick and straightforward.

Every single TUBECORE 3U is hand made with high quality, matched components (1% metal film resistors, Wima caps). It is equipped with 6N1P-EW (6N3P-EW) NOS tubes 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. Tubecore 3U uses 24 step Elma switches.
    •    Vari-mu Compressor
    •    All stepped manipulators: 24 pole Elma switches
    •    Sidechain HPF: 120Hz, 60Hz, Off
    •    WET/DRY mixer: 0 - 100%, 4 dB step
    •    MID/SIDE processing: OpAmp M-S encode/decode
    •    Input Impedance (balanced): XLR, 600 Ohm, Carnhill balanced
    •    Output Impedance (balanced): XLR, 600 Ohm, Sowter balanced
    •    Operating level: +4dBu
    •    Max input level: +22 dBu
    •    Max output level: +22 dBu
    •    Dynamic Range: >107 dBA (@ 1kHz, +24 dBu)
    •    Max gain: +35dB
    •    Max gain reduction: 20 dB
    •    Attack: 0.1 - 30ms
    •    Release: 0.1 - 4s
    •    Frequency response : 20Hz to 20kHz; +/- 0.2dB
    •    Signal to Noise Ratio: 87 dBA
    •    THD: 0.12 %
    •    THD+N: 0.15 %
    •    IMD (SMPTE): 0.32%
    •    Crosstalk: 82 dB
    •    Voltage: 115/230V AC, 50-60Hz
    •    Power consumption: 44W
    •    Power supply: external
    •    Dimensions: 70x50x30 cm, Shipping weight 9kg
    •    Tube set: 6N1P-EW, 6BC8, 5670, 6386

IGS Tubecore 3U Manual
IGS Audio Tubecore 3U Rear
IGS Audio Tubecore 3U Top Left
IGS Audio Tubecore 3U Bottom Right
IGS Audio Tubecore 3U Box
IGS Audio Tubecore 3U Box Open
IGS Audio Tubecore 3U PSU Front
IGS Audio Tubecore 3U PSU Rear