Arcam FMJ C31 PreAmp Upgrade

Almost any Hi-Fi component can be upgraded to higher performance using our techniques and components. The two things go together – the know-how and the right component. Over the last 30 years, we have developed our knowledge of where the biggest problems lie and how to overcome them to unleash better performance from a given piece of equipment.






The now discontinued C31 features a simple, accurate and clean signal path. The reed relay input switching dispenses with the compromises of mechanical or conventional relay designs, resulting in switching with immeasurable noise and distortion. The studio grade electronic volume controls deliver precision variation of volume level whilst maintaining the subtle nuances of the music and delivering long-term reliability.




This provides a great platform to upgrade! Our upgrades build on the strengths of the amplifier. Everything you love about the sound remains – it just gets so much better.


Internal signal wiring is taking care of, using a combination of Kimber copper and silver wire.





For the signal wire, we've used a mixture of Kimber copper cable, PBJ, single wire TCX and pure silver - 4 core GQ-24 Ag. If you would prefer copper in place of the silver wiring, then there will be a price reduction. Contact us for details.


For the majority of the capacitor changes, we use Russ's favoured Panasonic Audio Grade caps. Where possible, we will endeavour to use the superb Kimber Kaps.

90 component upgrades/changes are made across the power supply and pre-amp section. Upgrades include Kimber Kap capacitors and Russ's favoured audio grade Panasonic capacitors which give a smooth and detailed sound. The amplifier is completely disassembled to gain access to key areas of upgrade.






To clean up and give the power supply an upgrade SuperFuses™, Silencer™ mains filter, ClarityMains™ conditioner are fitted. Wiring was taken care of using PowerKord-100™.




if you're a fan (and lets face it, why wouldn't you be!) of our grounding philosophy that incorporates the RF Router, then we highly recommend the Ground Terminal option fitted to your equipment. The Ground Terminal provides a much more convenient way of attaching a ground wire.






If you don't have exactly the same model as listed above, but a very similar unit, then it's highly likely that the same or similar upgrades will apply. But we can't guarantee that until we have the unit here for inspection. Get in touch and let us know what you have.




Equipment upgrades are proving hugely popular. During peak times there may be a wait of several weeks before we can carry out the upgrade. So before we get your equipment here, it must be booked in so we can ensure a speedy turnaround of the upgrade. Once you have placed your order, we will contact you to arrange a suitable week and getting the equipment here.

In Person
For those of you who are local enough or if you fancy a trip to the lakes, you can drop off your equipment personally and then collect it when it’s complete or we can ship it back to you.

By Courier
We can arrange a courier collection of your equipment for an additional cost. We currently use UPS.
To make things easier, we can offer several collection options.

1. We can arrange a specific day for the courier to call and collect your equipment. Someone will need to be available all day at the collection address as we’re unable to arrange a time slot for collections.

2. Dropping off at a UPS Access Point. UPS use a network of local shops to deliver and collect parcels from and to. We can either post you a collection label or email you the label (you will need to print the label at home/work). Securely box up your equipment, affix the collection label to the outside of the box and take it to your preferred Access Point where you will be issued a receipt. UPS Access Points can be found here (link opens in a new window), simply enter you postcode to find your nearest one.

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Please note this is just an upgrade modification, it does not include the Arcam preamp