(MAIL-IN MODIFICATION SERVICE): WARM AUDIO EQP-WA

Modification Services for Warm Audio EQP-WA

Simply Select your Modification Service above to send in your unit for our EQP-WA modification service.

Once your purchase is complete you will be contacted with Mailing instructions, Work Order# and Work Order form for our mail in service.

On the EQP-WA we offer a wonderful circuit upgrade that really smooths out this reproduction equalizer making it great for any number of applications.

We put a lot of love into the mods on this one as with all of our modifications, to squeeze out the maximum performance possible.

While the design is not authentic to an original these sound fairly nice for the money, however the cost cutting measures small up the sound while making the unit sound brittle and lack luster when boosting when compared to the original.   

With the modifications we remedy these issues and really bring out the Pultec in these.

About the design:

The EQP-Wa utilizes Cinemag input and output transformers which sound very smooth and warm in the circuit but the rest of the audio path leaves something to be desired.

The circuit is fairly close to the original but as with most Chinese manufactured units, the quality of the components leaves the sound in the Wanting category.  

One short cut beyond the quality of components is the lack of an interstage transformer.

The interstage transformer while not necessary for the gain of the design, did impart a fair amount of color and offered nice de-coupling for DC between the EQ and amp stage.  

Our modifications bring back the low end, smooth out the equalizer and bring back the character to the design.

The Results:

The service increases the headroom of the unit, widens the frequency response, smoothes out the response in a more musical way and increases the character/color of the design.

So The modifications:

We do a complete audio path upgrade using premium parts for lower noise and higher headroom as well as lower distortion.

All Audio caps are swapped out for better performance using Panasonic Parts and Wima Capacitors in the audio path for more authenticity.

This includes all filters as well and really is the Bees-Knees.

Bypassing is performed where necessary for lower noise in the power supply.

Power supply modifications are also performed Thru out for the lowest possible noise figures in the overall design and better current delivery.

Tubes are then swapped for more complimentary versions in the design in terms of authenticity.

Hear the samples on our Home page.