TUBECORE

The finest mastering compressor ever created.

The design.
The 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.

Comfort of use.

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 we added the second one for your comfort and quick A/B comparing.

The tubes. 

The design of the 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 quality.

Every single 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.

SPECIFICATIONS:

DEVICE TYPE

• Vari Mu Compressor

BASIC FEATURES

• All stepped manipulators 24 pole Elma switches
• MID/SIDE Processing OpAmp M-S encode/decode
• WET/DRY Mixer 0 - 100%, 4 dB step
• Sidechain HPF 120Hz, 60Hz, Off
  

INPUT & OUTPUT

• Input Impedance (balanced) XLR, 10k Ohm, IGS Custom Transformers
• Output Impedance (balanced) XLR, 600 Ohm, IGS Custom Transformers
  

LEVELS

• 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
  

TIME CONSTANTS

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

BANDWIDTH

• Frequency response 20Hz to 20kHz; +/- 0.2dB
• DISTORTION (@ 20 HZ - 20 KHZ)
• Signal to Noise Ratio 87 dBA
• THD 0.12 %
• THD+N 0.15 %
• IMD (SMPTE) 0.32%
• Crosstalk 82 dB
  

POWER

• Voltage 115/230V AC, 50-60Hz
• Power consumption 44 Wats
• Power supply External
  

PACKING BOX

• Dimensions 70x50x30 cm
• Shipping weight 9kg
  

OTHERS

• Tube set Standard: 6N1P-EW or 6N3P-EW, Optional: 6BC8, 5670, 6386