ADM 780 Dual Channel Preamp rack #1

Designed for the broadcast environments of its era, the ADM 780 Input Module combines robust engineering with flexible routing and control. Built around discrete component op amps, it delivers excellent signal-to-noise performance and generous headroom across both microphone and line inputs.

Seven precision gain steps accommodate mic levels from –80 dBu to –35 dBu, while additional settings support line sources up to +27 dBu before clipping. Transformer coupling on both input paths ensures classic tone, isolation, and reliability.

Two independent foldback outputs and a selectable echo send offer versatile monitoring and effects routing. Dedicated OFF/ON, Cue, Solo and Group logic controls streamline workflow for live switching and silent preview. LED indicators provide clear status feedback.

Housed in a 1U rack frame with common PSU, gold-plated edge connectors, and front-panel illuminated switching, this pair of ADM 780 stands as a practical, great-sounding recording tool ready for the studio .

Key Features

• Mic and line level inputs with precision stepped gain
• Discrete op-amp topology for low noise and high headroom
• Transformer-balanced I/O
• Echo send: Pre, Post or PGM selectable with level control
• Two independent foldback mixes with level trim
• Cue and Solo outputs for clean pre-fade monitoring
• Group logic mute/assign switches with LED indicators
• Rugged construction with plug-in circuitry and dust covers
• Gold-plated edge connector and illuminated power switch

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.