72.228.104.6
In Reply to: RE: Re: Joule Electra tube noise w/ Merlins (long question) posted by jbelt2@tampabay.rr.com on November 05, 2009 at 12:31:47
Is the voltage fluctuation long term (i.e. as the day goes by the line voltage drifts up or down over the period of hours) or is the line voltage change short term (jumping up and down over the period of minutes)?
I have heard clear improvements in sound when using these units, especially when we use them in various hotel rooms at trades shows. These transformers based units use their transformers to provide common mode noise rejection... so the quality of performance is dependent to a significant degree on the quality of the transformer.
For example, the entry level Equitech units use nice but cost effective transformers made outside the USA. Their better Q series units use transformers from Plitron (made in Canada IIRC) which are built to better tolerances/winding techniques (possibly also better wire) which cost more.
FWIW - I do not sell Equitech or BPT at this time. I am less familiar with the BPT products, but from their web-site I see they use Plitron transformers... they also look like they have more sophisticated filtering (i.e. more filters in addition to the transformer and the spike/surge protection looks for sophisticated than the Equitech- In general my experience with the "filtered" outlets on the Equitech is that they do not very good sounding). Some of the BPT products use the ERS material... though the few inside pics I see of their units that use it show it is used allot... my experience is that using too much of this stuff can tend to make things start sounding too dry.
Since you are in FLA... I would make sure the spike/surge protection is very good in whatever you get given the amount of lightning Florida gets. From experience with Equitech units in several customer hands, I know they do a good job in spike/surge protection... from their website - it looks like BPT would do a good job too.
What am I using these days???... on more budget gear, I have on of the cheaper Equitech Son of Q units around. For the big rig (Joule, Audio Aero etc) I am using Running Springs PLCs.. mainly on front end (CD/Pre use). On mY OTL's I generally use a JPS Aluminata Power cord (a bit of a power conditioner in its own right) going direct into a 20A JPS In wall Wired circuit.
Happy Listening,
Rich Brkich
Retailer & Audio Asylum Industry Liaison
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