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In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage
Post Subject: The signal passing via the 834PTF-Air…Posted by Romy the Cat on: 6/5/2008

Will I be listening to all my sources via the inverse RIAA?

Well, the question was sarcastic but it has some rational grains.  If the signal passing via the 834PTF-Air does receive some positive attributes despite of the presumed nastiness of the dual-RIAA filtering then can we found some lessons in this fact?

In fact the lesson is not such a major discovery as I would like to convince myself.  Passing the signal via the “starving” 834PTF-Air turned out to be very educational but I head the same effect from other electronics. The Lamm L1 has remarkably similar effect but the Lamm L1 X factor also included the geometrical poisoning of imagine in a very unique way. The 834PTF-Air does not do it. I have now at home one 16-bit DAC that it trying to compete with my Bidat (it is an evolution for a company and I would like to keep the name private). The contested DAC is better then Bidat …but… the Bidat does have that “it”, that second harmonic dirt, that sets all bets off, making sound much more acoustic-like.

So, what the positive deference between the straight run from my a sources and the signal passing via the 834PTF-Air? I bought yesterday the 2007 Live recording of London Symphony with Gergiev conducting Mahler Sixth. An interesting performance, not perfect but very interesting. What could be more full-range then this! For a save of musically I would go for New Philharmonia with my beloved Barbirolli  -  he owns the M6 and this recording is the only M6 that I might listen for pleasure. For sake of lower levels of pleasure the Gergiev would do… Anyhow, I was experimenting with it running the 834PTF-Air in and out of the loop and it is VERY interesting….  I can get the “interesting” difference only via the immediately switching via the Placette’s remote control using the short-term memory. The difference within long- term memory in very complicated subject with this particular case (there are reasons). So, switching from the 834PTF-Air engaged to direct feed wants make you to vomit. I am not kidding! The sound feels like you Earth suddenly lost effect of gravitate and everything collapses. I make a pose,  listen a direct feed and then turn on the feed with anti-RIAA and 834PTF-Air in the signal path. The sound becomes VERY unpleasant very large but fat, chubby and imbalanced. The domination of the second harms oink is practically unbearable for the short-term memory. However, then mind, not actually not mind but senses and feelings begin to recognize an interesting save net – the sound got suddenly attached by with second harmonics but   at the same time got more dynamic (here is where ET2 does its amassing duty). So that enormous size of sound and it’s ability to flow slaw like a value river (slow is big plus in my book) but at the same time compensated with larger dynamics and ability to accelerate across range more rapidly and more “intelligent” make awareness very fast get use to this new Sound and to embarrass it very-very quick. Literally after 10 seconds I experience no discomfort. I do admit that there is some “coloration of harmonic saturation” but I did not detect so far that this coloration interferes with my listing experiences; I might recognize it later on….

Well, concluding, the saga with the ET2+ 834PTF-Air or as I call it the “End of Life" Phonostage turned out to be very educational. I would certainly do not support and would not advocate the idea of “Injection Channel” on the level of electronics  but  those observations of my make me to this about a lot of things. Why not to introduce the necessary but very defined “Injection” by the driver stage of the DSET for instance where it would be possible to introduce  a warmth of a given charnel by using the idea similar to 834P? It would problem imposable in 2-stage power design. There are many other applications…

The Cat

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