Tube-Tech HLT 2A – High-Fidelity Tube Equalizer

The Tube-Tech HLT 2A is a revolutionary stereo equalizer, combining high and low shelving EQ with high and low cut filters and a unique T-filter tilt EQ. This all-new combination of filters, designed in the analog domain, offers a highly intuitive and musical approach to tonal shaping. The HLT 2A is a versatile tool for mastering engineers, mix engineers, and producers who demand the warmth and depth of analog processing.

Innovative Tilt Equalization

The HLT 2A’s midrange T-filter introduces a unique way to balance frequencies. Acting as a tonal seesaw, it adjusts the spectrum around a selectable center frequency:

• Turn clockwise to boost highs and attenuate lows
• Turn counterclockwise to boost lows and attenuate highs

This powerful tool enables fast, musical tonal shaping, making it an excellent choice for both individual tracks and full mixes.

Key Features

• Stereo tube-based EQ – Delivers warm, analog tone
• High & Low Shelving EQ – Flexible frequency shaping
• T-Filter Tilt EQ – Dynamic tonal balance control
• Passive High & Low Cut Filters – Smoother roll-offs
• Bypass Options – Per-section and global bypass switches
• Transformer-Balanced I/O – Ensures pristine signal integrity
• Wide Frequency Response – 5 Hz – 55 kHz
• Low Noise Performance – < -80 dBU at 0 dB gain

Technical Specifications

• Low Cut Filters: 18, 25, 40, 60, 85 Hz (6 dB/octave)
• Low Shelving EQ: 18, 37, 80, 180, 370, 800 Hz (±12 dB gain)
• High Shelving EQ: 1, 2, 5, 10, 15, 22 kHz (±12 dB gain)
• T-Filter: 0.5, 1, 2 kHz (+4/-7 dB gain)
• High Cut Filters: 12, 15, 18, 20, 25 kHz (6 dB/octave)
• Input Impedance: >10 kΩ
• Output Impedance: < 60Ω
• CMRR: > 60 dB at 10 kHz

How Does It Sound?

The Tube-Tech HLT 2A redefines analog EQ with its ability to shape and balance frequencies effortlessly. Whether used for subtle tonal refinement or aggressive sound sculpting, its unique tilt EQ and warm tube character make it a standout choice for both tracking and mastering applications.