Mods for the Adcom Gfa 555 ?

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  • marker
    marker Posts: 1,084
    edited December 2004
    I'll bet they blow away a Denon AVR and Polk RTi rig too!:)
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  • George Grand
    George Grand Posts: 12,258
    edited December 2004
    When the original GFA-5x5 series of amps came out it was remarked in more than one location that the smallest one (535) was the best sounding of the three.

    Maybe THAT'S where Sid got his info.... several years before he was born. Wherever he got it, he's right.

    George Grand (of the Jersey Grands)
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  • shiu
    shiu Posts: 169
    edited December 2004
    Thank you George for the info. I bought my 555 some 15 or more years ago after reading all kinds of reviews on the 535, 545, and 555. The 555 was highly rated by the Stereophile magazine.

    As one of the Stereophile review put it, the 555 seems to be indestructible. After so many years of trouble free use, when I hooked it up to the front channels of my ex Sony STR-DA4ES, sound quality improved, though not really by much. After I traded the Sony in for a Denon 3805, the 555 was still able to improve the front channels SQ, but at very loud level only this time.

    Still, I was surprise to find that this near 20 year old amplifier could sound better than the 3805. I will never sell my 555. I hope Faster100 will keep his too. He can get his Parasound and still bridge the 555 for the center channel.
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  • faster100
    faster100 Posts: 6,124
    edited December 2004
    Originally posted by shiu
    I hope Faster100 will keep his too. He can get his Parasound and still bridge the 555 for the center channel.


    Too late, for my 2 channel rig the adcom was just to harsh and didnt have the bass i wanted.. what they are proclaimed for.. I got the parasound today and this I think is what i have been searching for.. very nice amp from the limited time ive used it today... Nice bass and beats the adcom and rotel in clarity.. The rotel not by a huge margin but still does..


    I sold the adcom already...
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • bikezappa
    bikezappa Posts: 2,463
    edited December 2004
    Does this mean this post will end now?
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  • shiu
    shiu Posts: 169
    edited December 2004
    Must be nice to own a Parasound, its a nice ending!
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  • faster100
    faster100 Posts: 6,124
    edited December 2004
    well it will end if they stop argueing, My posted question ended on page one :D from there it became another topic..
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • VR3
    VR3 Posts: 28,793
    edited December 2004
    Yeah, the original GFA-535 was a GREAT amp, much better than the series II version of it, IMO...

    545, same way. The original 545, to me was better than the series II.

    I have no experience with the 555 amp except from what I have heard from others...

    I need to hear Parasound...heck, I still need to hear Rotel...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • marker
    marker Posts: 1,084
    edited December 2004
    Originally posted by F1nut
    Even when presented with overwhelming evidence from NHT's own website you still don't get it.....why am I not surprised :rolleyes:

    BTW, any of the 3 vintage speakers mentioned here dig lower than your powered towers......LOL, pretty funny eh!?!

    EDIT: I really am out on this one. Go ahead and have the last word, if you'd like.

    You sure about that F1? I had to try to find these links before I could post them, but here they are. Check out the MEASUREMENTS on this critter. Brent Butterworth measured the U2 to be 26Hz-180Hz +/-.2dB (not 2, *point 2*) with the -3dB at 21Hz and 250Hz.
    http://www.hedmag.com/Product-Reviews/Speakers/Building-Blocks.asp

    http://www.hedmag.com/Measurements/2003/December-2003-Issue/NHT-Evolution-U2-Subwoofer-Measurements.asp

    And that was for the U2 or T5 subs. The T6 subs are double the drivers and double the power.

    I own 3 NHT M5 across the front with L5 surrounds on walls in my main home theater system.

    I was torn between NHT subs and SVS. I ultimately went with dual stacked PB10ISD with the left and right M5 on their pedastal stands mainly because of the price and our own Doc Spec's recomendation to me, but I would have been very happy with NHT subs as well.

    I'm not getting involved in the argument here if these are powered towers or not, but I have some Infinity IL60 interludes, and to me they are powered towers with their built in amps.
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  • F1nut
    F1nut Posts: 50,766
    edited December 2004
    Just going on the info provided by the aforementioned companies. Individual experiences/set ups will differ, I'm sure.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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