Most of our products can be ordered in your local currency
from our webshop or through our distribution partners.

Webshop: store.interphase.audio

EU distribution: Sonic8.eu
UK distribution: Sonic8.com

You can also order below and check-out later.
On check-out prices will be converted to your local currency.
All our products are for professional use, all orders are business-to-business.
Prices are listed in Euro, excluding VAT.
VAT will be added (21%) ff you are based in the EU and are not VAT registered.
This is automatically calculated on check-out.

Ark console pricing and information can be found here
(for the time being, Ark console is only sold direct)

Barium - Single Channel Reference Meter
Reference Meter module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 182

Barium Duo - Dual Channel Meter
Reference Meter module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 285

Silicon - Solid State Mic Pre
Preamp module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 372

Iron - Transformer Mic Pre
Preamp module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 540

Zinc - Instrument Amplifier
Preamp module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 384

Carbon - Classic Capacitive Equaliser
EQ module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 445

Iridium - Inductor Equaliser
EQ module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 540

Helium - Hybrid Equaliser
EQ module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 635

Lead - Headphone Amplifier
Headphone amplifier module in Octa or 500 series format,
available with Silver or Black Faceplate

€ 310

Octa Rack
8-slot rack for Octa modules

€ 850 (excl. VAT) / € 1025 (incl.VAT)

Octa Rack 500
8-slot rack supporting Octa modules and 500 modules

€ 950 (excl. VAT) / € 1145 (incl.VAT)

NDUCR - Inductor Equaliser
Silver or Black Faceplate

€ 1980 (excl. VAT) / € 2395 (incl.VAT)

EQ 2.2 - Multi-channel, Multi Equaliser
Silver Faceplate

€ 2140 (excl. VAT) / € 2589 (incl.VAT)

EQ 2.2-VU - Multi-channel, Multi Equaliser
Silver Faceplate

€ 2225 (excl. VAT) / € 2692 (incl.VAT)

EQ 8 - Multi-channel, Multi Equaliser
Silver Faceplate

€ 4455 (excl. VAT) / € 5390 (incl.VAT)

TopAmp™
The TopAmp is a specialist audio operational amplifier that uses pure class-A circuitry from input to output, designed to re-capture the clarity and character of classic audio recordings from the 1960’s and 1970’s.

Derived from a long-held understanding that where sonic fidelity is concerned, “less is more”, the TopAmp uses the minimum of components necessary to achieve the performance expected from a modern op-amp in terms of noise, distortion and power supply rejection.

The discrete TopAmp is the finest op-amp available for audio applications, providing superior sound quality.

The TopAmp is sold as replacement part for Interphase Audio products.
We do not advise on their use in your own circuits, and can not provide support on your designs.

€ 35 (excl. VAT) / € 42 (incl.VAT)

TopAmp99
The TopAmp™ is a specialist audio operational amplifier that uses pure class-A circuitry from input to output, designed to re-capture the clarity and character of classic audio recordings from the 1960’s and 1970’s.

Derived from a long-held understanding that where sonic fidelity is concerned, “less is more”, the TopAmp uses the minimum of components necessary to achieve the performance expected from a modern op-amp in terms of noise, distortion and power supply rejection.

The discrete TopAmp is the finest op-amp available for audio applications, providing superior sound quality.

With the TopAmp99 adaptor, the TopAmp can be retrofitted to any existing audio equipment designed to accept the industry-standard 2520 / 990 footprint, upgrading that equipment with the superior TopAmp sound quality.

The TopAmp99 is sold as replacement for any 2520 / 990 opamp.
We do not advise on their use in your own circuits, and can not provide support on your designs.

€ 39 (excl. VAT) / € 47 (incl.VAT)

All prices are listed in Euro excluding and including VAT.
But you of course like to know what price you need to pay.

We understand that international VAT rules are complicated.
We’ve put together a short guide so you can find out if you will or will not be charged VAT.

Our webstore is set up to automatically calculate all this on check-out.
The shopping cart will show prices including VAT, but gets re-calculated after you enter your address (and possible VAT registration).
On check-out prices will also be recalculated in your local currency.

All orders from our webstore business-to-business transactions, independent from the fact that we need to charge VAT or not.

Where you are based determines if we need to charge VAT or not.
Select your region below for full details.

You’re based in the EU and are not VAT registered:

We have to charge VAT.

There are no additional charges (import duties, etc), and shipping is free.




You’re based in the EU and are VAT registered:

We do not have to charge VAT.
Make sure to enter your valid VAT number on check-out.

Note that if you are based in Belgium, we need to charge VAT, regardless if you are VAT registered or not.
(but you can of course recover the VAT)

You’re based in the US:

We do not have to charge VAT.

Additional charges depend on the mood of your president.
As time of writing (1st of August 2025) it seems 15% import duties will be added.
This means you’ll have to pay 15% charges to the transport company.
These charges are for your government, not for us.

You’re based in the UK and are not VAT registered:

We do not have to charge VAT.

You will however need to pay the local (UK) VAT on import to the transport company.
There are no additional charges (import duties, etc)


You’re based in the UK and are VAT registered:

We do not have to charge VAT.

We’ll include the proper paperwork so you don’t need to pay the local (UK) VAT on import to the transport company.
Make sure to enter your valid VAT number on check-out.


You’re based in Belarus or Russia:

We do not sell or ship to Belarus or Russia.

You’re based outside the EU, UK or US:

We do not have to charge VAT.

But you may have to pay VAT to the transport company.
This is depending on your local regulations, impossible for us to list everything here.
In most countries there are no import duties on our products, but again this is depending on your local rules and regulations.