Front-end or Amplification Section
If the unit is  a pre-amp or a power-amp, we would require you to specify us the exact make/model. A supplementary high-resolution picture of the interior is also highly appreciated.

Speakers
If the unit is a speaker, you may mail  the cross-over unit to Topline Audio, and we would modify it  for you.  If this is not possible,  then we would mail  you the Topline Package.

Requirement of an expert technician
We would prefer to send you the Topline package with the condition that you have an expert technician. Afterall, we assume that most serious audiophiles have a good technician (if they are not a technician themselves)

Topline Audio will provide clear guidance and step by step instructions in how to  apply the package to your gear.