Thanks Paul
Do share your experience with us on the improvements you have found.
Barry,
I have found these to be of genuine sonic benefit in my system, which as some folk here have heard, is centred around transparency to the recording, on both analogue and digital (CD). At first, after a recommendation, I tried just one booster on my Pre, a Concert Fidelity 080 LSX2. Over my many years of audio, I have tried various things to improve transparency, some failed pretty miserably, some not so much difference so were removed, but this NCF booster did 2 things that I could detect straight away, being more 'air', and slightly less instrument blurring, something that you don't know exists until you hear it differently of course. I spent a few weeks checking my findings before ordering 2 more, which confirmed what was going on, and added to the improvement, more air, more space and seemingly improved tonality from instuments. So now I use 5, on my pre, Ayon CD-T, my balanced power supply, and speaker modules (active bass ML's). I will want to add 2 more soon, 1 to my Allnic H3000 PSU, (for which at the moment I swap the one on the Ayon CD-T to), and 1 to the new Ayon Stratos Ref DAC. They do genuinely seem to add to the illusion of reality.
To answer your opening question, in my opinion, in my system, a very worthwhile investment
(Also, just to be clear, I use Furutech components on several products as OEM, so deal direct with the UK distributor but am not a dealer of Furutech accessories per se)
Best Rgds,
Paul