SDA SRS 2 + GFA 555 = WOW!!

JayMXJayMX Posts: 116
Finally found a bigger amp at a reasonable price for the SDA's. Holy ****!! That is all... :o :o :) :)
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Upstairs 5.1.2:
Marantz NR1607, L/R - Modified Monitor 7C (194’s, Dynamat, Sonicaps, Mills, H-nuts), Center - Yamaha NS-C310, Surrounds/height/Atmos - (4x) Proficient in-ceiling, Sub - RBH TS10AN, Marantz DV7600

Downstairs 7.2.4:
Marantz SR6011, L/R B&W DM604, Center - RBH 700-CX, Surrounds - Monitor 5a (Peerless), Surround Back - Monitor 4a (Peerless), Height/Atmos - (4x) Polk RC60i, Sub#1 - JBL 12” frankespeaker, Sub#2 - Klipsch RSW12, Samsung bluray

2CH: Kenwood KA-8150, Adcom GFA 555, L/R - SDA SRS 2, RTA12C (194's)

Office:
Cambridge Soundworks Amp
Monitor 4b (Peerless)

Spares:
Monitor 10b (Peerless), Monitor 7b (Peerless), Monitor 5b (SL2000), Monitor 5b (SL1000)

Repair pile: SDA2, SDA1b
...and more to come, it’s a sickness.

Comments

  • FestYboyFestYboy Posts: 2,783
    Amazing what a little current will do... ;)
  • JayMXJayMX Posts: 116
    I’m considering it a Father’s Day present to myself! :D
    Upstairs 5.1.2:
    Marantz NR1607, L/R - Modified Monitor 7C (194’s, Dynamat, Sonicaps, Mills, H-nuts), Center - Yamaha NS-C310, Surrounds/height/Atmos - (4x) Proficient in-ceiling, Sub - RBH TS10AN, Marantz DV7600

    Downstairs 7.2.4:
    Marantz SR6011, L/R B&W DM604, Center - RBH 700-CX, Surrounds - Monitor 5a (Peerless), Surround Back - Monitor 4a (Peerless), Height/Atmos - (4x) Polk RC60i, Sub#1 - JBL 12” frankespeaker, Sub#2 - Klipsch RSW12, Samsung bluray

    2CH: Kenwood KA-8150, Adcom GFA 555, L/R - SDA SRS 2, RTA12C (194's)

    Office:
    Cambridge Soundworks Amp
    Monitor 4b (Peerless)

    Spares:
    Monitor 10b (Peerless), Monitor 7b (Peerless), Monitor 5b (SL2000), Monitor 5b (SL1000)

    Repair pile: SDA2, SDA1b
    ...and more to come, it’s a sickness.
  • JayMXJayMX Posts: 116
    I always thought the soundstage was impressive before, but it’s just amazing now. Channel separation is very impressive! Dead silent when it’s idling. Also, even at low levels there is a “meatyness” that I never experienced before. I am really amazed by this old gal! Love it!
    Upstairs 5.1.2:
    Marantz NR1607, L/R - Modified Monitor 7C (194’s, Dynamat, Sonicaps, Mills, H-nuts), Center - Yamaha NS-C310, Surrounds/height/Atmos - (4x) Proficient in-ceiling, Sub - RBH TS10AN, Marantz DV7600

    Downstairs 7.2.4:
    Marantz SR6011, L/R B&W DM604, Center - RBH 700-CX, Surrounds - Monitor 5a (Peerless), Surround Back - Monitor 4a (Peerless), Height/Atmos - (4x) Polk RC60i, Sub#1 - JBL 12” frankespeaker, Sub#2 - Klipsch RSW12, Samsung bluray

    2CH: Kenwood KA-8150, Adcom GFA 555, L/R - SDA SRS 2, RTA12C (194's)

    Office:
    Cambridge Soundworks Amp
    Monitor 4b (Peerless)

    Spares:
    Monitor 10b (Peerless), Monitor 7b (Peerless), Monitor 5b (SL2000), Monitor 5b (SL1000)

    Repair pile: SDA2, SDA1b
    ...and more to come, it’s a sickness.
  • Tony MTony M Posts: 6,094
    So you got a Clean Adcom GFA-555 original Nelson Pass AMP? :o B)
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • txcoastal1txcoastal1 Posts: 9,902
    Tony M wrote: »
    So you got a Clean Adcom GFA-555 original Nelson Pass AMP? :o B)

    :) John Curl
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
  • motorstereomotorstereo Posts: 833
    txcoastal1 wrote: »
    Tony M wrote: »
    So you got a Clean Adcom GFA-555 original Nelson Pass AMP? :o B)

    :) John Curl

    You sure about that?

    Old 16th August 2002, 11:06 PM #2
    Nelson Pass is offline Nelson Pass United States
    The one and only
    Adcom 555II - Nelson Pass ?
    I designed the 555. I believe the Mk II added a couple
    of what were considered improvements, and it seemed
    to me that it included triple darlington outputs instead
    of 2 follower. I might have the schematic around, but
    all told it was a simple bipolar design with a current
    sourced input diff pair followed by a common-emitter
    gain device that was also current sourced. This drove
    the followers.

    It was typical of all the 5XXX amps that I did the first one
    and then they improved it until it had too many parts,
    and then I would design the next in the series

    Americo Borza sent me an old 555 in the hopes that I
    would update it, and it still sits here, a perfect candidate
    since so many of them were built.

    Personally, I would score a few of these and run them till
    they die and then update them. If you wait long enough,
    an update will be issued.
  • ZLTFULZLTFUL Posts: 4,615
    John Curl worked with Parasound while Nelson Pass worked with Adcom.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
  • Tony MTony M Posts: 6,094
    It amazes me that there are so many amp designs still being made.

    Why don't people just copy Nelson Pass's designs or other great designs of the past and present to get maximum performance? Is there copyright laws in effect for 30 years?
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • DSkipDSkip Posts: 14,887
    edited June 12
    Usher does that. They made some minor changes that Pass was on board with.
    audiothesis.com/

    Speakers: Harbeth: 30.2, SHL5+; Usher: Be-10, T-515; Rosso Fiorentino: Elba, Pienza, Certaldo, Fiesole, Volterra; Polk: T50, Signature S15, RTA 15tl, RTi12; Sonner Audio Allegro Unum, Legato Unum, Legato Semis, Legato Duo; Emerald Physics CS-2.8; Klipsch KLF-20
    Preamps: Shuguang S200MK, Dayens Ampino, Parasound P5
    Amps: Shuguang S845MK, Dayens Ampino Monoblocks, Parasound A23
    Integrateds: Triode Corporation TRV-88SER, MastersounD: BoX, Dueventi, Compact 845, Evolution 845; North Star Design Blue Diamond
    Sources: AURALiC Aries, Denon HEOS Link, North Star Design: Magnifico, Supremo, Incanto, Intenso, Venti
    Cabling: Wireworld
    TV: Sony XBR-75X940C
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