UA 4-710d 4-Channel Preamp

At the heart of the 4-710d are four channels of "Twin-Finity" mic preamps, allowing you to blend between 100% tube and 100% solid-state signal paths. This flexibility lets you craft a wide range of tones—from smooth and creamy to edgy and crunchy—by dialing in just the right balance of tube warmth or solid-state clarity.

Each channel also includes true-bypass 1176-style compression, with "fast" and "slow" settings for quick adjustments. This makes it easy to add thickness to vocals, keep a bass guitar steady, or enhance the texture of synths and horns with a bit of extra grit or sheen.

With eight analog inputs, the 4-710d is a great way to expand your studio setup. Its 24-bit A/D converters, with selectable sample rates up to 192 kHz, ensure high-quality digital conversion. Plus, it easily integrates with most interfaces through dual ADAT optical or AES/EBU DB-25 connectors.

PSU works on 100-240V, EU power cord included.

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.