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Thermionic Culture The Kite EQ  From Thermionic

Stereo Equalizer with Attitude

Thermionic Culture


"Experience the Difference"

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Manufacturer's Description from Thermionic


 ♦ All controls are stereo except O/P TRIM and are indented for easy recall

 ♦ HPF (High Pass Filter) operates at 20 & 40Hz with a 12dB/octave curve

 ♦ BASS BOOST and BASS CUT both have 2 selectable operating frequencies, which can be used together for a Mid Cut effect

 ♦ TOP SHELF is a broad Mid/Top Lift, a little like a Presence control. Also has 2 frequencies.

 ♦ AIR boosts the higher Top and will give an amazing clear yet warm sound, only available with out valve products

 ♦ ATTITUDE is our own switch that adds those special 2nd harmonics only possible with valves! 

 ♦ OUTPUT TRIM - Separate controls to adjust finely the 2 channels, also -6dB switches

 ♦ XLR connectors, "semi floating" inputs and unbalanced outputs are employed

 ♦ A transformer balanced version is available to order, in Purple


Thermionic Culture

About Manufacturer

Thermionic Culture is focused on producing the very best all valve design audio products. In this day and age of mass-produced solid-state audio equipment it's a refreshing change for a company to constantly strive for the ultimate all valve signal path.

The owners/key people involved at Thermionic Culture are totally dedicated to valve audio equipment, all having many years experience in recording and working with valves. Company founder and designer Vic Keary built his first studio in the late 50's and went onto building Maximum Sound Studios which was later bought by Manfred Mann and renamed The Workhouse, Chalk Farm Studios, and the all valve based studio Chiswick Reach.

Jon Bailes, Thermionic Culture's co-founder is responsible for the mechanical design & visual appearance. Jon has a wealth of experience as a Chief Designer in the electronic manufacturing industry .

Nick Terry engineers on many current albums and singles working recently with artists such as McAlmont & Butler, The Libertines. All this 'real world' experience is an invaluable aid to creating all valve equipment that other artists will no doubt appreciate.

Audio amplification, compression, mixing and equalisation took a backward step when solid-state technology was introduced. Valves are much more real and natural when amplifying and processing audio. We use no transistors or ICs in the signal path. Solid state is relegated to where it works best - in power supplies, although we do use a valve voltage regulator in The Culture Vulture's HT supply.

Some of our circuits take ideas from the 1940s to '60s and refine and update them to produce the low noise and distortion which are expected now. Other circuits are really original! To achieve high standards we use modern components such as 1% metal oxide resistors and polypropylene capacitors where their use is a positive advantage, but we avoid Hi-Fi type gimmicks such as gold plated XLR connectors. We take pride in the construction and reliability of our equipment. To date it is all hand wired using the best quality components. We give a 2-year guarantee against manufacturing defects, though we can only guarantee valves for 1 year. Many valves we use, are Military/Industrial grade. Also, we select and match (where necessary) all of the valves that we supply so a far longer life span can be expected


Input impedance: 10kΩ

Output impedance: 220Ω

Distortion (@ +4dBu): ≤0.015% @ Attitude 1

MOL @ 1% Distortion: +25dBu

Noise: < -80dBu

Signal/Noise: -105dBu

Frequency response ±1dB

Attitude 1: <10Hz to 56kHz

Attitude 3: <10Hz to 20kHz

Attitude 6: 15Hz to 9kHz

Crosstalk (dB)

Channel 1: 1kHz -72 10kHz -64

Channel 2: 1kHz -72 10kHz -58

Phase shift

Interchannel: 0.25º at 10kHz

Input to Output: 13 º at 10kHz 

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