Retrosonic Pro Audio IMQ Dual Mic Pre and EQ

This dual channel strip is 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 IMQ 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
- Separate transformers for Line in and Mic input
- 3 EQ bands per channel with 18dB variable Q cut/boost
- 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
- NB! Ground lift switch has to be switched off to use Phantom power

IMQ channel transformers

Mic input transformer: Lundahl LL 1528
Line input transformer: Lundahl LL 1540
Output transformer: Lundahl LL 5402

EU power cord included.

Contact us for a personal shipping quote or for any additional information.

1U rack with 2 channels
Output trim is called LEVEL
+48V Phantom switch is added to Mic input
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
NB! Ground lift switch has to be switched off to use Phantom power


IMQ channel transformers

Mic input transformer: Lundahl LL 1528
Line input transformer: Lundahl LL 1540
Output transformer: Lundahl LL 5402

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.