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| Headphone Amps (full-size) Discussion of desktop headphone amps. |
12-25-2007, 05:08 PM
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Headphoneus Supremus
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Join Date: Oct 2006
Location: Arizona
Posts: 3,262
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Quote:
Originally Posted by arteom
I am new to op amp rolling, never done it before. I will listen to this for some time before I try to swap anything out. Hey got a question though, would you recommend I leave headphones plugged in during the burn in or no?
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Good idea, waiting on the Opamp business. Both the pre-amp and the headphone amp inside the Zero have capacitors, so both will eventually burn-in. I would recommend plugging in your headphones and driving them for the first 100hrs of burn-in. This will burn-in the majority of the components and give you some serious sound! 
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12-25-2007, 05:48 PM
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Junior Head-Fi'er
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Join Date: Nov 2007
Location: Flushing, NY
Posts: 22
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The heck, how did you get yours so quickly? My tracking # has been stuck at "Item left HK" since the 22nd....aii....
__________________
Money spent on audio since discovery of Head-Fi:
2005: $73
2006: $184
2007: $448
2008: ?!?!
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12-25-2007, 06:06 PM
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100+ Head-Fi'er
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Join Date: Sep 2007
Location: West Palm Beach, Florida
Posts: 101
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Well it IS coming from china afterall.
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12-25-2007, 06:10 PM
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Headphoneus Supremus
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Join Date: Jan 2007
Location: North.Waaay north.
Posts: 1,631
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I dunno why I keep coming back and reading this thread.
It's just making me impatient for my unit to arrive.
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12-25-2007, 10:11 PM
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Head-Fi'er
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Join Date: Dec 2007
Location: Houston, TX
Posts: 51
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Quote:
Originally Posted by IceClass
I dunno why I keep coming back and reading this thread.
It's just making me impatient for my unit to arrive.
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Definitely. I think that's true for most of us!
__________________
PC -> ZERO DAC/AMP (soon) -> DT770/80
MuVo -> UE Super.fi 3
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12-25-2007, 10:30 PM
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Headphoneus Supremus
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Join Date: Oct 2006
Location: Arizona
Posts: 3,262
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It's because ANY news is good news when you are waiting! Don't worry though, I would bet many of them are sitting in customs waiting to be accepted and processed. When customs accepts them, they show up in the USPS system under the same tracking number you were given. You can then have the USPS system send you email updates. 
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12-26-2007, 12:51 PM
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1000+ Head-Fi'er
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Join Date: Aug 2006
Location: Sweden
Posts: 1,035
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The opamps should be MDIP right? For exemple LM4562NA MDIP.
EDIT: And where can I found the Browndog adaptor?
EDIT2: Hmm LT1057 only come as SOIC and PDIP. I assume its the PDIP.
Which one of these is the correct one to use?:
LT1057ACN8 PDIP
LT1057ACN8#PBF PDIP
LT1057CN8 PDIP
LT1057CN8#PBF PDIP
EDIT3: And where do one buy Analog device DY2000 (dual, metal)?
(EDIT4: Found the answer, BP
Correct one?:
OPA627AP PDIP
OPA627APG4 PDIP
OPA627BP PDIP
OPA627BPG4 PDIP)
__________________
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H X-fi XtremeMusic -> ASIO -> Optical -> Gamma2 / Zero dac (OPA-Earth) -> CK2III / Zero internal amp -> RS1 "brown headband" / HD600 '02 / K501 .v1 / HF-2
P Cowon D2 - Head-Direct RE0
Other Fiio portable amp / Playstation SCHP-1002
Gone: DT990 '05 32ohm, HD650 with Oehlbach cable / Meier Corda Headfive / MS2i / DT880 '05 250ohm / RS1 "buttonless" '08 / LD MKIII / Audio-Technica ATH-AD2000
------------------------------------------------
Spotify
Last edited by Henmyr; 12-26-2007 at 01:19 PM.
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12-26-2007, 01:16 PM
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1000+ Head-Fi'er
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Join Date: Aug 2006
Location: Sweden
Posts: 1,035
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double post
__________________
_____________________________________________
H X-fi XtremeMusic -> ASIO -> Optical -> Gamma2 / Zero dac (OPA-Earth) -> CK2III / Zero internal amp -> RS1 "brown headband" / HD600 '02 / K501 .v1 / HF-2
P Cowon D2 - Head-Direct RE0
Other Fiio portable amp / Playstation SCHP-1002
Gone: DT990 '05 32ohm, HD650 with Oehlbach cable / Meier Corda Headfive / MS2i / DT880 '05 250ohm / RS1 "buttonless" '08 / LD MKIII / Audio-Technica ATH-AD2000
------------------------------------------------
Spotify
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12-26-2007, 01:40 PM
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Headphoneus Supremus
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Join Date: Apr 2006
Location: Sydney, Australia
Posts: 2,697
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Quote:
Originally Posted by Henmyr
EDIT3: And where do one buy Analog device DY2000 (dual, metal)?
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Eddie Wu @ diykits
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12-26-2007, 03:12 PM
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Junior Head-Fi'er
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Join Date: Dec 2007
Location: Allen, Texas
Posts: 5
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Possibly stupid question here, but, is this an upsampling DAC? Is it upping all inputs to 24/192 before analog output? I have a Darkvoice 336i coming (eventually) and wanting a new DAC to use. I am currently using the DAC in my Denon DVD 5000 for playback of my Escient Fireball and my Sony SACD for CD playback, since the Denon will not play CDRs. Thanks for any help!
__________________
Pioneer Elite AR35 Integrated Amp
Denon DVD-5000 DVD/CD player
Sony SACD -222ES
Escient Fireball DVDM-100
Darkvoice 336i tube headphone amp (On its way)
Jamo E875 modified speakers
Sony turntable
Sony Professional MDR-7506 headphones
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12-26-2007, 03:53 PM
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1000+ Head-Fi'er
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Join Date: Jul 2007
Location: Australia
Posts: 1,041
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Sorry abit off-topic...
Does "OPA637BP" is a single-opamp (which need 2 to works as dual?) ?
Does BP & AP has differences? both suitable for headphone amp?
__________________
"Visually everything here is imperfect, but sonically they're mesmerizing"
Head-Fi Feedbacks
Portable rig iMod Photo → Xin SMIII V6 (2x BUF634 + 2x OPA627) → Yuin PK-1
Home rig X-FI Xtrememusic (as transport) → BJC Coax → OMZ v4.1 → VanDeHul "The Name" IC → Lisa III XP → AKG K701 (w SAA Equinox) / Denon D2000
Current sources: iMod Photo, iRiver IFP-180TC, Sony D-EJ925, & OMZ v4.1 DAC
Current cans: DENON D2000, AKG K701, Yuin PK-1, Etymotic ER6i, Alessandro MS-1, Sennheiser MX500, Koss UR-30 & KSC-55
Current amps: Yamaha Natural Sound Stereo Amp A-420, Xin Supermacro III V6, & LISA III XP
Current speakers: Klipsch Promedia satellite speakers + Megaworks Subwoofer
Wish list: Stax rigs, Darth beyer, Xin Reference, Tube Amp, Ultrasone Edition 9 & Balanced rigs
Gone but not forgotten: Heed Canamp, iBasso D1
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12-26-2007, 04:05 PM
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Headphoneus Supremus
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Join Date: Apr 2006
Location: Sydney, Australia
Posts: 2,697
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Quote:
Originally Posted by Capunk
Sorry abit off-topic...
Does "OPA637BP" is a single-opamp (which need 2 to works as dual?) ?
Does BP & AP has differences? both suitable for headphone amp?
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the OPA637 is single, depends on the amp design it may need to be mounted on a 2 x single > dual browndog adaptor but not always
the BP has better specs, and usually less variance whether or not it is better for audio is arguable, see Notes on Audio Op-Amps for more info
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12-27-2007, 12:36 AM
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1000+ Head-Fi'er
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Join Date: Dec 2007
Location: Manchester
Posts: 1,070
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iv just ordered my new dac! can't wait to get it. Theres quite a few of us now waiting, this new zero dac should get a serious amount of testing from us all, the reviews will be very interesting to read!
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12-27-2007, 01:49 AM
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100+ Head-Fi'er
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Join Date: Jun 2007
Posts: 109
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What is the retail price of the Zero?
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12-27-2007, 02:01 AM
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Head-Fi'er
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Join Date: Apr 2005
Location: London, UK
Posts: 64
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Quote:
Originally Posted by d-cee
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Has anyone done a compare-'n-contrast with the metal and ceramic? Lawrence is sending me a ceramic one with the Zero but if he hasn't posted mine yet, I'm wondering whether I should chip in the difference and see if he'll do me a metal one instead?
I appreciate it's all personal taste and what-have-you, but I'd love to hear what people on here have to say all the same..
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