Unique Pro Audio Gear

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After receiving amazing feedback on the EQ we designed for the middle input section of the Ark console, it quickly became clear that this EQ is so good that it deserves to find it’s own path in the proaudio world.
Striving to make the perfect product available for our customer’s needs and budget, we now make our EQ available in different versions.
All versions of the EQ are based on the
IP211 EQ module from the Ark console.
IP211 features
* Dual Audio Path
* Hi-Cut Filter
* Lo-Cut Filter
* 4-band Inductive EQ
* Swing EQ
* 2 inputs and 2 outputs per channel
* Each EQ section can be used on either Audio Path
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Hi-Cut filter (also called Low-Pass filter)
As it’s name implies, the Hi-Cut filter cuts off the high frequencies.
It sweeps
down 5 octaves from 16 KHz to 500 Hz
Our Hi-Cut filter can be used on the A or B signal path, and separate or in combination with the other EQ sections.
Lo-Cut filter (also called Hi-Pass filter)
As it’s name implies, the Lo-Cut filter cuts off the low frequencies.
It sweeps
up 5 octaves from 25 Hz to 800 Hz
Our Lo-Cut filter can be used on the A or B signal path, and separate or in combination with the other EQ sections.
4-band inductive EQ
Inductor based circuits are the “holy grail” of equaliser designs.
These were used for example in the much favoured Pultec equaliser, which dates back to the late 1950’s.
Owing to their unique electro-mechanical properties, inductors impart a character all of their own, which is very distinctive.

Our inductive EQ uses inductors
in each of the four bands (unlike other so-called inductive EQs on the market), giving precise control and the distinctive inductor sound on each band.
Inductors provide a “peaking” characteristic, giving much tighter control of the frequency selected.
The values and components have been carefully chosen and matched to provide an extremely musical sound.
Each band provides switch selection of any of six frequencies chosen at musically pleasing intervals.
Each band uses a fader - instead of a rotary potmeter - for cut and boost control, allowing a maximum of plus or minus 15dB.
Our 4-band inductive EQ can be used on the A or B signal path, separate or in combination with the other EQ sections.

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Four bands with switchable, overlapping frequencies
- Low : 50, 80, 100, 150, 300, 600 Hz
- Low Mid : 125, 250, 500, 1K, 2K, 4K Hz
- Hi Mid : 2.5, 3, 5, 6, 7, 8 KHz
- High : 8, 9, 10, 12, 14, 16 KHz
But why faders instead of rotary controls ?
Honestly … because we like faders.
But also, because in our opinion, this gives much better visual control of the level of cut or boost, so you know what’s going on in a glance.
Swing EQ
Our Swing EQ is a fast and easy way to make a track sound “warmer” or “cooler”.
By turning the one-control-knob counterclockwise, you attenuate the highs and boost the lows, making the sound darker.
By turning the one-control-knob clockwise, you attenuate the lows and boost the highs, making the sound brighter or cooler.
Our Swing EQ can be used on the A or B signal path, separate or in combination with the other EQ sections.

Four versions of the Interphase Audio EQ are available
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EQ 2.2
2U 19 inch rackmount unit with 2x IP211 EQ modules with
* Dual Audio Path per channel
* 4 inputs with XLR and Jack connectors
* 4 outputs with XLR and Jack connectors
* 4 output level controls
* VU meter which can read any of the 4 inputs or outputs
* 4 EQ sections per channel / module
▪ Hi-Cut filter
▪ Lo-Cut filter
▪ 4-band Inductive EQ
▪ Swing EQ
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EQ 8-R
6U 19 inch rackmount unit with 8x IP211 EQ modules with
* Dual Audio Path per channel
* 16 inputs with XLR, Jack and D-sub connectors
* 16 outputs with XLR, Jack and D-sub connectors
* 4 EQ sections per channel / module
▪ Hi-Cut filter
▪ Lo-Cut filter
▪ 4-band Inductive EQ
▪ Swing EQ
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EQ 8-D
Angled desktop / deluxe unit with 8x IP211 EQ modules with
* Dual Audio Path per channel
* 16 inputs with XLR, Jack and D-sub connectors
* 16 outputs with XLR, Jack and D-sub connectors
* 4 EQ sections per channel / module
▪ Hi-Cut filter
▪ Lo-Cut filter
▪ 4-band Inductive EQ
▪ Swing EQ
* Stylish wooden side panels (same as the Ark console)

(The EQ 8-D is under development)
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EQ 8-Ex
6U 19 inch rackmount unit with 4x IP211 EQ modules with
* Dual Audio Path per channel
* 16 inputs with XLR, Jack and D-sub connectors
* 16 outputs with XLR, Jack and D-sub connectors
* 4 EQ sections per channel / module
▪ Hi-Cut filter
▪ Lo-Cut filter
▪ 4-band Inductive EQ
▪ Swing EQ

Lower cost version of the EQ 8-R, with only 4 modules installed
(empty spaces covered with blank panels)
Additional modules can be installed when budget allows.

Inputs and outputs ? We’ve got you covered.
All versions of our EQ have multiple I/O connectors.
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EQ 2.2 Rear Panel

All inputs and outputs of the EQ 2.2 are doubled.
Inputs have female XLR and balanced jack connectors. These connectors are paralleled, you can use either.
Outputs have male XLR and balanced jack connectors. These connectors are paralleled, you can use both at the same time.
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EQ 8-R / EQ 8-Ex Rear Panel

We took I/O connections on the EQ 8-R and EQ 8-Ex a step further.
Inputs have female XLR, balanced jack and D-sub connectors. These connectors are paralleled, you can use either of them (per channel). It’s not a good idea to use multiple input connectors (per channel) at the same time.
Outputs have male XLR, balanced jack, and D-sub connectors. These connectors are paralleled, you can use all of them at the same time, so outputs can be split to multiple destinations.
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And remember …
All four sections of the EQ 2.2 or EQ 8 can be used independently from each other, on either of the audio paths, or can be combined for “extreme” EQ-ing.