The Great River MP-2NV is a two-channel mic preamp inspired by classic British console circuitry, refined into a modern, flexible studio tool.

It delivers the weight, depth, and harmonic richness people love in vintage preamps, while keeping the noise floor low, the build quality serious, and the workflow simple. Each channel features two discrete Class-A gain stages, custom Sowter transformers, dual-stage metering, selectable input impedance, polarity reverse, phantom power, and output loading for extra tone-shaping options.

The front-panel Hi-Z input is routed through the input transformer via FET and BJT buffering, giving guitars, basses, synths, and other instruments a big, full, record-ready sound. A TRS insert point also lets you place a compressor or EQ before the output amplifier, making the MP-2NV especially useful while tracking.

Built like a proper studio workhorse, the MP-2NV fits two channels of serious “big iron” tone into a single rack space.

Great River MP-2NV features

* Two-channel Class-A microphone preamp

* Inspired by classic British console designs

* Custom-wound Sowter input and output transformers

* Up to 70 dB of total gain

* Input gain in 5 dB steps up to 60 dB

* Output level control from -25 to +10 dB

* Dual input and output meters on each channel

* Front-panel Hi-Z instrument input

* TRS insert point before the output amplifier

* Selectable 1200 / 300 ohm input impedance

* 600 ohm output loading switch

* Phantom power and polarity reverse

* Balanced XLR connections

* 1/4” -10 dBV output for DAW monitoring

* Gold-plated switching contacts

* Internal power supply

* 1U rackmount design

PSU is switchable between 100V and 240V, currently set to work on 240V. Fuse has to be changed for 100V operation. EU power cord included.

We ship worldwide, feel free to ask for a precise shipping quote.

The listed ex VAT / VAT0% price applies if you have a company with a valid EU VAT number or if you're based outside of EU. Non-EU buyer pays the import duty and tax as regulated by their local customs. Private buyers in EU are a subject to VAT. We would have to add and charge 24% VAT tax part from private buyers in EU.