Microphone Model                                                Price for Mod

Apex 460/Nady TCM-1100 to CM-12                              $469.00
Nady TCM-1050/SE-5600 to CM47                                 $469.00
CAD Trion 8000 upgrade to CM12 or CM47                     $469.00

This price includes return shipping of your microphone. We change out the capsule, transformer and optimize the circuit around a selected 6072 tube.

The stock capsule can quite often be very satisfactory for acoustic instruments, group vocals and room miking. We can perform just the circuit/tube and transformer
upgrade for ...........................................................$229.00

These upgrades will increase the headroom of the circuit by 10db and the microphones will be quieter. The dual bobbin transformers that we use will handle 6db more level than the stock transformer and has nearly 6db more output overall plus yields 2db more output at 20hz. They have excellent common mode rejection. These transformers are with + & - 1db of the original Telefunken specifications.

Neumann U87, U47, U67, M49, M50 capsule re-skinning or replacement.............$395.00

Sony C37a, circuit power supply upgrade                       $195
Sony C37a capsule re-skinning and fitting                      $395
AKG C12 capsule re-skinning and fitting                         $395

Call the shop for scheduling your mod.