Most transparent amp you've heard?

OK, here is what transparent means.

about 8 years ago i fell in love with the Tenor OTL 75 watt integrated monoblocks. at the time i owned a Mark Levinson #32 preamp which i considered very highly. one day i compared the integrated passive volume control in the Tenors to the #32. the resistor based passive in the Tenors sounded way less veiled and much more immediate and alive. Goodby Levinson.

next i wanted remote volume control; so i purchased a Placette RVC and tried the Tenor's thru the Placette RVC. i could hear no difference between listening direct thru the Tenor's volume control and adding the Placette RVC even if i used the line out from the volume attenuator.....in other words the Placette was transparent to the source.

it gets better.

it turns out you can stack 5 Placette RVC's end to end and you cannot hear any difference between these 5 stacked RVC's and only one of them, or none of them.

the Placette RVC was truely transparent to the source.....it changes nothing (or rather my ears could not detect any difference).

that is my definition of transparent.....what other audio electronics could do that?

btw; transparency is not the end all factor of sonic bliss; but it is an important issue.

I'm in complete agreement with Mike. I've owned Placette products and they definitely qualify. No tube preamp I've ever owned qualifies, though there may be some out there, but that's not to say they don't have a lot of other things to recommend them.

Parasound Halo JC1s .. most transparent amps I have listened

Tvad- Maybe you've missed the fact that I'm a Sound Technician, have a number of recordings (done personally) for reference, and have spent the last 30 years training my ears to recognize certain musical nuances to facilitate the proper(natural) set up of sound systems and venues? Then there is what the TacT system accomplishes. Forget it though- If I have to explain, you wouldn't understand!

Mikelavigne's definition of "transparency" is as clear as any I've ever heard. The Placette Passive Linestage I owned at one time was the most transparent piece I'd ever encountered as well.