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The Hum (Read 1752 times)
Showme
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The Hum
03/08/19 at 21:17:32
 
I was ready to pull the trigger on a ZP3, full bore with all the extraís but in reading the posts on this forum I have to ask how pervasive the hum is? I really donít want to drop $2,000 for another aggravation. It seems as though a lot of people experience it. Should I be concerned?
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NormD
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Re: The Hum
Reply #1 - 03/08/19 at 21:40:15
 
I run my ZP3 into my ZTPRE and no more hum (barely noticeable) than if connected to any other components (DAC, home theatre, other phono stage).  I just sent it in for the 25th Anniversary upgrade.
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OPPO Sonica DAC
Technics SL-1200M3D Turntable
SoundSmith The Voice cartridge
JRMedia Center running on a MacMini
Oppo 103D for video
Marantz AV8802a Pre
ZTPre & ZMA for Stereo
Rotel RMB-1585 amp
Focal Electra 1038Be speakers (93 db)
2Hsu Research ULS-15 M
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jslateiv
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Posts: 148
Re: The Hum
Reply #2 - 03/08/19 at 22:05:35
 
It's really gonna depend on your setup,..   what kind of cart are you using,  what is the ZP3 going into,  a pre,  an amp,...  what is the sensitivity of the amp?    
  I at first was running the ZP3 with a LO-~.03mv cart > SUT >  ZP3 > Pre > amp w/ higher sensitivity (~.7V for full output),..    this combo did exhibit a little noticeable hum when I turned the volume up.

Now I run into a Decware amp with a much lower sensitivity (everything else the same)  and the hum is all but gone,..   It really depends on your gain staging.   If your running a typical MM cart w/~5mv output I wouldn't worry about it.   Seems to be more of an issue when you have to make up gain due to a low output cart.  My experience at least..
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VPI Scout (SS Zephyr MIMC) > Lundahl 1933 SUT > ZP3 > Auralic Aries Mini > PSA DSD w/BridgeII > PSA BHK Pre > 25th Anniv. Zen Amp/Torii Jr./NuForce STA200/TubeLab 300B > Triangle Celius 202 / Zu Omen (Hi-Mod) : PSA P12 : Iconoclast Cabling
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Showme
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Posts: 207
Re: The Hum
Reply #3 - 03/08/19 at 23:20:06
 
Iíve got a Thorens 124 with a Goldring cart. I guess at first it would be running into a Teac UD-503 as a preamp to Zen 25th Anniv amp. Iím planning on changing the current pre to a CSP3-25 Anniv or a ZTpre
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Archie
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Posts: 1836
Re: The Hum
Reply #4 - 03/08/19 at 23:59:48
 
I've dealt with ZP3 hum and what finally really got rid of it was routing my ICs away from my power outlets. †Being near power cords didn't matter but the outlets sure did. †There is slight hum compared to my digital channel but not worth worrying about at the level it is. †It becomes "audible," without music playing, only at very high volume. †So yeah, I'd say the ZP3 is hum free -- but the total setup might not be without some effort. †I think some have had issues with WiFi interference too. †I keep that function off on my router.
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Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
ZLC
Homemade Big Betsy Speakers
Silver Cabling
DIY Isolation platforms under amps & TT.
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JD
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Posts: 513
Re: The Hum
Reply #5 - 03/09/19 at 01:05:42
 
The only time I've ever experienced a hum with my zp3 is when components were not set up correctly i/e too close/interfering with each other. When set up correctly it is the my favorite decware component.
I'm looking into uprgrading it.

JD
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Showme
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Posts: 207
Re: The Hum
Reply #6 - 03/09/19 at 15:13:57
 
It sounds like the only way to know is buy it and try it. Thanks for the input.
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Archie
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Re: The Hum
Reply #7 - 03/09/19 at 18:25:39
 
I think that the ZP3 is quiet, although they can possible ship with, or develop a fault in shipping -- that Steve will readily repair.  The hum that I and some others have reported from time to time is a "fault" in the set up of the system.  As I mentioned above, cable routing was, in my case, the key.
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Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
ZLC
Homemade Big Betsy Speakers
Silver Cabling
DIY Isolation platforms under amps & TT.
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Showme
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Posts: 207
Re: The Hum
Reply #8 - 03/10/19 at 15:57:41
 
I pulled the trigger one yesterday. Full monte, beeswax caps and bypass. I donít know exactly how that works but I just loaded it up. Paduak wood to match my Anniversary amp.
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Lon
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"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 16551
Re: The Hum
Reply #9 - 03/10/19 at 17:38:16
 
Awesome! The waiting begins. . . but it will be worth it.
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HR-1,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IVI;Rega RP3 w/25th mods PS Audio:DMP+DSD,P10,NPC,PowerBases,AC-12 pcs; Mapleshade:SamsonV2+V3,double helix Plus spkr cbl;Oppo UDP205;VooDoo:Cremona+Amati,Iso-Pods; headphones: PM1,HD800S,LCD-
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Archie
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Posts: 1836
Re: The Hum
Reply #10 - 03/10/19 at 19:10:41
 
Showme.  That's great!  Do you have a pre to put between the ZP3 and Zen25?
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Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
ZLC
Homemade Big Betsy Speakers
Silver Cabling
DIY Isolation platforms under amps & TT.
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Showme
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Posts: 207
Re: The Hum
Reply #11 - 03/10/19 at 21:19:53
 
At the moment iím Using a Teac UD-503 as a DAC/preamp. Seems to work well and I really like the remote feature. I do babe plans next purchase either a  CSP-3-25th or a ZTPRE. Most likely at the moment iím lewning towards the ZTPRE with remote.
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Archie
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Posts: 1836
Re: The Hum
Reply #12 - 03/10/19 at 21:29:32
 
The reason I asked was that the ZP3 generally won't put out enough voltage to bring Steve's amps to full power.  I thought that could be a problem with a sub-3 watt amp.  Sounds like you're covered.
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Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
ZLC
Homemade Big Betsy Speakers
Silver Cabling
DIY Isolation platforms under amps & TT.
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Showme
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Posts: 207
Re: The Hum
Reply #13 - 03/11/19 at 17:32:45
 
Archie, thanks for the heads up. I sure hope they work out great.
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bikehappy1
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Posts: 142
Re: The Hum
Reply #14 - 02/09/20 at 02:33:35
 
I just started playing my new VPI Prime. I can unequivocally say that the hum in my ZP3 was my inexpensive Audio Technica turntable. Nice and quiet now from cloud 9!!
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