Charles
I installed the SR black fuse in my Shindo Auregies - TOTAL MAGIC - I now hear the plucking of the strings, detail that I never knew existed - not to repeat, but like the "fog has been lifted"
This is the best and cheapest upgrade ever - hands down. Anyhow with a Shindo pre-amp MUST buy one!!
At this point, no interest in upgrading my preamp, but a SR Black fuse in a Masseto or VR.....................