Tube life extender: https://www.amazon.com/dp/B00MVDTEXS This countdown timer is mechanical (spring-driven), introducing no electrical noise that I can detect (unlike a digital countdiwn timer I tried.) Warning: After you install this, you will always remember to power it off manually...

It's highly unlikely that those isolation transformers have the extremely low interwinding capacitance (0.0006 pF) of the Topaz -31 or -32 model series. In other words, they can't compete. They would only be able to attenuate common-mode and normal-mode noise below 400 Hz, typically...

DACs and PCs are known to generate "backwash" noise, polluting the power going into anything else that's plugged into the same outlet or power strip. You've got three devices, so you will need a small, simple power strip, with a short power cord, no surge protection or pilot lights or fuses...

Hi mkaza, I wish I had an equation for calculating the maximum frequency at which NR is "effective" vs. the pF capacitance rating, but all I can say is that 0.001 is pretty good, compared to most new isolation transformers available today. Still, the smaller the pF, the higher the audio...

I very much like the weaker of the two 3D+ settings, with my near-field monitor setup, but the stronger setting sounds to me as if some unappealing reverb was added. A majority consensus should rule, here, so again, I would encourage you to survey your customer base. I appreciate your...

Hi! Thanks for asking! Five changes come to mind, a couple already mentioned: 1) Add an actual Bypass switch, that works whether the iTube3 is powered on or off. (Others have requested this feature.) 2) You might want to poll other customers, but I would prefer a choice of 3bB and 6dB...

I recall reading that, indeed, but it's kind of like saying, "You're not supposed to have white wine with beef." Given how nearly every album is mastered uniquely and the variables of gear and taste, there are no rules to follow here. It's almost entirely subjective. I have to agree, however...

Very late to this party, I am thrilled with the iTube2. Thanks ifi - and thanks to all the contributors here! This thing is a "Swiss Knife" for modifying your sound, with multiple features at the ready. I rode the controls obcessively, early on, but now, I know exactly what I want as soon as...

Thanks Chris, As evidenced by many great posts, there are several contributors here who have a much better understanding than I do on how to make the most of these low-capacitance ITs. The good news for the common audiophile is that you can accomplish a lot, just by inserting an appropriately...

https://www.amazon.com/dp/B00EPDMDZ8 https://camelcamelcamel.com/product/B00EPDMDZ8

Yes, there are at least three schools of thoughts, here: 1) Use nothing but grounded-neutral secondary ITs (ideally, just one big one with all component power cords plugged into outlets that are as close together as possible, sourced from that one ITs secondary). 2) Use nothing but...

See: https://www.head-fi.org/threads/topaz-low-capacitance-isolation-transformers-for-affordably-clean-power.857448/page-17#post-14834948

It's importamt that you understand the context for which the narrator of that video is concerned. He works at a test bench, often with energized circuits in an exposed chasis where there is a high probability of unintentenionaly electrocuting himself by simultaneouesly touching both hot and...

That's good advice. Really, you could bring the fuse rating down to nominatlly exceed your peak current demands - even if that's well below the transformer's rating.

This is what I used when I "restored" the Topaz seen in the first post of this thread: Fuse Holder: https://www.amazon.com/gp/product/B00EUF6JDS 20A 250V Fuses: https://www.amazon.com/Divine-Lighting-Slow-Blow-Ceramic-MDA20A/dp/B004I36FJA Or if you prefer: 15A 250V Fuses...