Aurora Audio GT4-8 Four Band Equalizer

The GT4-8 and GT4-8TRS EQ feature 30 selectable frequencies ranging from 33Hz to 15K.

The GT4-8 is designed to be used with our GTP8 eight-channel preamp. The GT4-8TRS has input and output transformers so is self-contained, though the transformers add to the costs.

Geoff’s design takes that classic British EQ sound that we all know and love and expands its usability by adding some of his own touches. Let’s look at the high-and low-end shelving. There are two gain modes to choose from. The low gain mode gives that feel of classic EQ shelving, 8dB of boost and cut. The high gain mode gives the user 18dB for grand adjustments that you may need to do. Your ribbon microphone just a little too dark? Open up the top end at shelving starting at 3.3K! Love that mid-range of your kick drum but it doesn’t have enough low end for you? Using the high gain mode to boost the lows, you will be in bass heaven in no time at all.

The mid-range is where any EQ can show its true power. The mid-range frequencies feature THREE selectable bandwidth options to choose from. The widest curve gives you the most vintage style sound, while the narrower options enable you to get more surgical. For example, the narrow curves can help you zone in on a snare drum while not highlighting the hi-hat that may be bleeding into the microphone.

The high and low pass filters are incredibly useful and musical. The LPF ranges from 3.9K to 18K and can be used for taming high frequencies or to dull something out completely. The HPF can help clean up low rumbles ranging from 22Hz to 270Hz.

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.