Tube-Tech HLT2A Equalizer

Tube-Tech

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Product Code: 9999-16850
$3,820.00
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The Tube-Tech HLT2A Equalizer is an all-new kind of Equalizer, combining High and Low shelving Eq plus Hi and Low cut filters with an innovative T filter “tilt” midrange Eq. It’s the first time this combination of filters has been designed in the analog domain. The HLT2A possesses a warmth and character that breathes life into a track and gives it an organic body that somehow manages to occupy real physical space inside a stereo mix!

The Tube-Tech HLT2A is a stereo equalizer, featuring low and high cut filters, low and high shelving filters and a T-filter. The shelving filters are designed around a high gain tube amplifier. The T-filter is a passive filter placed between the shelving filters and the output amplifier. All three sections are supplied with a in/out switch. The low and high cut filters are also passive with a slope of 6dB/octave. A bypass switches the whole filter section out of the amplifier circuit, keeping the output stage in the circuit. The T-filter is like a seesaw. When the low end goes up, the high end goes down and visa versa. When the potentiometer is turned clockwise, the high frequencies are boosted and the low frequencies are attenuated. When the potentiometer is turned counter clockwise, the low frequencies are boosted and the high frequencies are attenuated. The unit is all tube based except for the power supply. Input and output have fully floating transformers. All DC voltages are stabilized, except the anode voltage for the output stage.

The midrange T-Filter “tilts” the entire spectrum around a selectable midrange frequency point. Frequencies above that point increase (or decrease) while frequencies below that point decrease (or increase). This unique topology, provides a powerful and uniquely efficient way to get beautiful-sounding overall equalization. As such, the Tube-Tech HLT2A is destined to become a “go-to” equalizer in high-end mastering houses,smaller project studios, and everything in between.

Like all Tube-Tech processors, the stereo HLT2A possesses a warmth and character that breathes life into a track and gives it an organic body that somehow manages to occupy real physical space inside a stereo mix. However, the functionality of the HLT2A is unique in the Tube-Tech line – and indeed in the world of analog processing. Users will find that the HLT2A generates quick, intuitive results that can range from mild to extreme, and it sounds great on individual tracks or strapped across the drum bus or the mix bus.

How Does It Sound?
The Tube-Tech HLT2A marks a different approach to EQ’ing. It is a very powerful overall shaping EQ, yet extremely simple to operate. Simply put, the HLT2A will yield good results for basically any material and application, ranging from the demanding mastering engineer to the sound quality hungry project studio owner. The combination of Hi and Lo shelf and Lo/Mid frequency T just creates a ton of very nice EQ shaping possibilities!

Tube-Tech HLT2A Equalizer Features

  • Tube based push-pull amplifier
  • All-tube active/passive EQ
  • Conductive plastic potentiometers
  • In- and output are transformer balanced and fully floating

Tube-Tech HLT2A Equalizer Specifications

  • Freq Response: -3 dB: 5 Hz – 55 kHz
  • Low Noise: < -80 dBU @ 0 dB gain
  • CMRR: > 60 dB @ 10 kHz
  • Filters:
    • Low cut: 18, 25, 40, 60, 85 Hz, 6db/octave
    • Low shelving: 18, 37, 80, 180, 370, 800 Hz. Gain: +/‑12dB
    • High shelving: 1, 2, 5, 10, 15, 22 kHz Gain: +/‑12dB
    • T.-filter: 0,5, 1, 2kHz. Gain: +4/-7 dB
    • High cut: 12, 15, 18, 20, 25 kHz, 6db/octave
  • Input impedance: >10 kΩ
  • Output impedance: < 60Ω

Tube-Tech HLT2A Equalizer Includes

  • Tube-Tech HLT2A Equalizer
  • Power cable
  • Manufacturer Warranty

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What We Think

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The Tube-Tech HLT2A Equalizer sounds amazing and is super easy to use! It features a simple, but powerful high and low shelf EQ with six selectable frequencies per band and the ability to boost or cut more than 12 dB! It also offers smooth high-pass and low-pass filters, but the unique thing about this unit is the T-Filter. The T-Filter is a tilt-style EQ that makes balancing bass and treble on your mix quick and easy! Simply select your center frequency (500 Hz, 1K, or 2K) and boost or attenuate. The HLT2A fattens up mixes nicely, and gives you a ton of control. I highly recommend it!

Wes DeLoach, Pro Audio Sales

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