(MAIL-IN MODIFICATION SERVICE): Symetrix 501 COMPRESSOR/LIMITER

Symetrix 501 Modification Mail in Service

The service is per unit and there are multiple available. 

Due to the variations in design of the 501, some units have a Valley Green VCA and others a DBX. 

In Valley versions we do not offer a VCA upgrade due to the unique character and its coveted nature but if your unit has the DBX VCA we do for an additional $35

The service increases the headroom of the unit, widens the sonic's and increases the 3-d image. It also lowers overall noise in the unit while making it larger and fuller.

Here is what the service includes:
1) Burr Brown input and output stage mod (gives the unit a more full detailed three dimensional sound with increased frequency response).
2) PSU re-cap and mod:lowers noise, re-rejuvenates and helps increase the current supply. It also gives the unit a fuller sound.
3) cleaning of all electro-mechanical switches and potentiometers.
4) Calibration