Retrosonic Pro Audio IMC Dual Mic Pre and EQ

This dual channel strip our recreation of vintage 80's Finnish made MS Audiotron Multimix mixers input and output channels.

MS Audiotron Multimix was a highly regarded console in 80-90's and used mainly at live sound systems in theatres, concert halls and rental companies. Also several recording console variations was made to custom orders. MS Audiotron Multimix consoles were of high-specced broadcast quality, very modular and well designed workhorse equipped with a great preamp design and lush EQ-sections. Lundahl Transformers were used in and out of these consoles, as in our racked 2-channel versions. 3 transformers per channel strip can go a bit coloured but it does it so nicely that you wouldn't change back to others. 

We used most parts of the originals as transformers, potentiometers and switches, re-made new PCB, front plate design, chassis and PSU and mounted all nicely in convenient horizontal position in a 1U rack. Unit includes Lundahl transformers on Mic, Line and Outputs. The EQ is broad and lush sounding Low- and High frequency Baxandall-type with sweepable Mid-filter.

Channel is an exact copy of the original console's signal chain. We used IMC input module and OMR output module. The OMR module is re-drawn on a new PCB but all the original parts are used.

Details and specifications

1U rack with 2 channels
Output trim is called LEVEL
+48V Phantom switch is added to Mic input
4 EQ bands per channel with 18dB variable Q cut/boost
Separate transformers for Line in and Mic input
Output is transformer balanced
Insert is pre fader, post EQ, unbalanced – MS Audiotron Multimix Flow Diagram should be looked to understand it
230/115V mains voltage select switch, located on the rear panel
Ground lift switch for MIC and LINE in, located on the rear panel

IMC channel transformers 

Mic Input transformer: Lundahl LL 4901
Line Input transformer: Lundahl LL 1521
Output transformer: Lundahl LL 5402

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 22% VAT tax part from private buyers in EU.