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Mod - Adding a PPIMV Master Volume in Essex

PPIMV –  (Post Phase Invert Master Volume)  For valve amplifiers without a master volume this is by far the best kind of master volume modification around, tonally it provides very little colouration while allowing you to crank the preamp valves.                          

 Important to point out though that it doesn’t overdrive the power tubes unless up loud so the distortion will be far different than using other devices such as speaker load attenuators.  This is a popular mod to carry out to older Marshalls or amplifiers which only have a single gain control.

There are quite a few ways to add a volume control, from a simple variable resistor in the send / return line however these can change the sound as they change the impedance of the signal going through the chain.  

Christmas Closing & important last drop off and collection dates.

After a successful year of repairs we will shortly be shutting up and enjoying some down time. We want to thank you all for your business and support over the last year it has been one of our best on record!

Our ticketing system is still functional and we will try to accommodate true emergencies over the period where we can.  While we are shut no work or repairs will occur. Web orders will be held until we return.

Important Dates:

Last drop offs for repair Thursday 14th December

Last collections from repair Wednesday 20th December

We will resume as normal Monday 8th January 2024