Speaking of Acoustic Zen, here is a segment of the AZ review posted on the Acoustic Zen website where the reviewer (Jim Merod) discusses Van Den Hul's Thunderline and The Second (which is just like The First):
Nordost Quatro-fils cables deliver excellent spectral extension. For the past two years, I have regarded the Quatro-fils as part of my working equipment in the field and back in the studio. To the Nordost and Magnan cables, I'll add one more, less recognized (in truth under-recognized): van den Hul's "Thunderline," along with their carbon-filament "Second," cables are truly magnificent (if, also, eccentric) cables that have no easy comparison.
Nordost Quatro-fils cables deliver excellent spectral extension. For the past two years, I have regarded the Quatro-fils as part of my working equipment in the field and back in the studio. To the Nordost and Magnan cables, I'll add one more, less recognized (in truth under-recognized): van den Hul's "Thunderline," along with their carbon-filament "Second," cables are truly magnificent (if, also, eccentric) cables that have no easy comparison.