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  #11  
Old 08-29-2017, 03:35 AM
Sniper17 Sniper17 is offline
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I am totally sold on the C-3850. it's truely a state of the art engineering. The sound knocked my socks. Using with a AirTight 300L amp and adding a A-47 later.
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Transrotor Rondino TT/Graham Phantom II/Airtight PC1s cartridge/Soulution 750 Phono/ Accuphase C-3850 Preamp/ Accuphase DP550 SACD/Airtight 300L amp/ Piega 311 Speakers/Bluesound Streamer/. Shunyata Triton and Equitech.

Nordost Valhalla 2 Phono Cable, Nordost and Shunyata IC and Power Cords
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  #12  
Old 08-29-2017, 08:52 AM
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Canonicus Canonicus is offline
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The C-3850 was just picked as a 2017 Golden Ear award winner in The Absolute Sound magazine.



Printing is small, so click the thumbnail for a better read...
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File Type: jpg IMG_20170829_0001.jpg (647.0 KB, 61 views)
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Dave
"You, who are on the road, must have a code, that you can live by"... Crosby,Stills & Nash

System: Accuphase A-70/C-3850 /DP-720 /C-37 /T-1100/PS-520 /Sonus faber Stradivari Homage (#786)/Technics SL-1200G/M.Y. Sonic Lab Eminent GL MC/Wireworld Gold Eclipse 7 speaker/
Gold Eclipse 7 IC's /Platinum Electra PC's/Synergistic Research Powercell UEF12se w- Atmosphere Level 3 PC's/ Synergistic Research XOT carbon/Nakamichi Dragon/Beyerdynamic T1 v2 w-Norme Audio Zoetic cables/
Magnum Dynalab Signal Sleuth/KLAudio RCM/20A dedicated line & breaker w/Furutech GTX–D NCF Receptacles-GTX Wall Plate -NFC carbon cover/Furutech flux-50 ncf filters/Fostac Maximus P40/Stein Harmonizers/more tweeks

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  #13  
Old 09-12-2017, 10:57 AM
stargazerang stargazerang is offline
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Quote:
Originally Posted by meltemi View Post
A fully balanced preamp or power amp consists of two identical amplifier units (and for the preamp also volume control units) per channel.
Normally the units are floating as well, i.e. independent of the ground potential.

In a top of the line Accuphase system, the fully balanced output of the source (DA / Phono pre) is connected via XLR to the fully balanced C-3850 and then via XLR to the fully balanced monoblocks
(A-200, A-250, M-6200). At the output of the power amps the phase of one complete amplifier chain per channel (preamp, connections and power amp) is turned 180°.

This eliminates all potentially induced noise and also the common residual noise and distortion of the amplifier and volume control units themselves leading to a cleaner music signal.
Hi, Can you advise, if my preamp a C2450 is connected to the A70 power amp via RCA interconnects, and if my DAC, a Simaudio is connected to my C2450 via XLR interconnects and since the Simaudio component's balanced XLR output is equipped with Pin 2 (+) as opposed to the XLR configuration of the C2450 which is Pin 2 (-), must I still use the phase switch on the preamp to ensure the entire chain is in phase?

Thank you
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  #14  
Old 09-12-2017, 11:09 AM
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audio bill audio bill is online now
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Quote:
Originally Posted by stargazerang View Post
Hi, Can you advise, if my preamp a C2450 is connected to the A70 power amp via RCA interconnects, and if my DAC, a Simaudio is connected to my C2450 via XLR interconnects and since the Simaudio component's balanced XLR output is equipped with Pin 2 (+) as opposed to the XLR configuration of the C2450 which is Pin 2 (-), must I still use the phase switch on the preamp to ensure the entire chain is in phase?

Thank you
Yes, to maintain absolute phase with your DAC as the source you would invert the phase on the preamp. As long as the DAC is your only source that's fine, but if you have other sources with non-inverted outputs you'd have to switch the preamp back to non-inverted. Not sure if the C2450 allows you to select phase based on input, but if it does that would allow you to select proper phase specifically for each source you have connected. Another alternative would be if your DAC has a phase inversion switch you could invert its output and then keep the preamp set to non-inverting.
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  #15  
Old 09-12-2017, 11:50 AM
terrycym terrycym is online now
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Or you could switch the wires to pins 2 & 3 on one end of the XLR cables
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  #16  
Old 09-12-2017, 01:44 PM
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Canonicus Canonicus is offline
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As stated in the following brochure (and user manual) Your C-2450 has independent phase selection for each input.
(listed third from the bottom)

http://www.accuphase.com/model/c-2450.html
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Dave
"You, who are on the road, must have a code, that you can live by"... Crosby,Stills & Nash

System: Accuphase A-70/C-3850 /DP-720 /C-37 /T-1100/PS-520 /Sonus faber Stradivari Homage (#786)/Technics SL-1200G/M.Y. Sonic Lab Eminent GL MC/Wireworld Gold Eclipse 7 speaker/
Gold Eclipse 7 IC's /Platinum Electra PC's/Synergistic Research Powercell UEF12se w- Atmosphere Level 3 PC's/ Synergistic Research XOT carbon/Nakamichi Dragon/Beyerdynamic T1 v2 w-Norme Audio Zoetic cables/
Magnum Dynalab Signal Sleuth/KLAudio RCM/20A dedicated line & breaker w/Furutech GTX–D NCF Receptacles-GTX Wall Plate -NFC carbon cover/Furutech flux-50 ncf filters/Fostac Maximus P40/Stein Harmonizers/more tweeks

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  #17  
Old 09-12-2017, 11:57 PM
stargazerang stargazerang is offline
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Many thanks to the various advice received

Last edited by stargazerang; 09-13-2017 at 10:18 AM.
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  #18  
Old 09-13-2017, 05:20 PM
meltemi meltemi is offline
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Because of some professional gear also used in my system, my standard is 2 hot / 3 cold.
DC-901 / C-37 and A-200 are switched accordingly; for the C-3850 output phase = input phase.
T-1100 and DG-58 are only connected digital.
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