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| Headphone Amps (full-size) Discussion of desktop headphone amps. |
10-05-2007, 03:30 AM
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100+ Head-Fi'er
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Join Date: Mar 2007
Location: North Jersey/Boston
Posts: 216
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Would these adequately power a pair of HD-580's? I have a pair of SR-60's right now, but will likely be adding a pair of HD-580's in the near future. I want something that will power both well from my Zen Vision M.
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Zen Vision M, Foobar2K, Insignia DS 4G
SR-60 | HD-424 | Yuin PK3 | MylarOne X3 | KSC-75 |
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10-05-2007, 03:39 AM
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Head-Fi'er
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Join Date: Jun 2007
Location: Rolla, USA
Posts: 76
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My amps work well with HD-580's.
Unless I am too busy, I will resume sales some time next week. Also, I may begin to sell bare PCBs in the coming weeks.
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Headphones: Beyerdynamic DT-880's, Grado SR-60's with bowls, Sennheiser HD-280 Pro's
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10-05-2007, 04:24 AM
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100+ Head-Fi'er
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Join Date: Mar 2007
Location: North Jersey/Boston
Posts: 216
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Do they sound well with SR-60's too? If so, I will be in for one when they are ready.
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Zen Vision M, Foobar2K, Insignia DS 4G
SR-60 | HD-424 | Yuin PK3 | MylarOne X3 | KSC-75 |
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10-05-2007, 04:30 AM
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Head-Fi'er
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Join Date: Jun 2001
Location: Hong Kong SAR
Posts: 81
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IMO, the bass boast works even better with Grados. The HD580 and HD600 go low enough and don't need more bass.
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Home: NAD C521BEE > Darkvoice 336i > Beyerdynamic DT880 / Sennheiser HD600 (Red Clou Cable)
Office: Soundblaster Audigy Advanced MB > Creek OBH-21 > Audio-Technica A950LTD
Portable: iPod 40G > Meier Audio Corda Move > Shure SE530PTH
Sport: iPod Nano 4G > Bass Boast CMOY > Koss KSC-75
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10-06-2007, 12:40 AM
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100+ Head-Fi'er
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Join Date: Sep 2007
Location: University of Florida
Posts: 105
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I would be very interested in a kit.
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10-06-2007, 01:09 AM
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100+ Head-Fi'er
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Join Date: Mar 2007
Location: Alberta, Canada
Posts: 127
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I would also be interested in buying a kit.
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10-06-2007, 02:13 AM
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Head-Fi'er
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Join Date: Jun 2007
Location: Rolla, USA
Posts: 76
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"sbulack" will be evaluating one of the two v1.55 amps early next week. If he agrees that the jack spacing is adequate, I will order final boards and make kits available around the week of Oct. 22-26.
While v1.55 undergoes evaluation, I have one v1.50 prototype for sale.
(v1.50 in back, v1.55G in front)
__________________
Headphones: Beyerdynamic DT-880's, Grado SR-60's with bowls, Sennheiser HD-280 Pro's
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10-09-2007, 12:39 AM
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100+ Head-Fi'er
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Join Date: Mar 2007
Location: North Jersey/Boston
Posts: 216
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Are these available yet? If not when will they be? And where can I pick one up from?
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Zen Vision M, Foobar2K, Insignia DS 4G
SR-60 | HD-424 | Yuin PK3 | MylarOne X3 | KSC-75 |
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10-09-2007, 06:51 AM
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Junior Head-Fi'er
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Join Date: Oct 2007
Location: Worcester, MA
Posts: 11
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Is it possible to get one of these with a 1/4" jack?
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10-09-2007, 09:10 PM
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Head-Fi'er
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Join Date: Jun 2007
Location: Rolla, USA
Posts: 76
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It's possible if you bypass the automatic-on feature, but since wiring a 1/4" jack separately from the PCB will add minor inductance to the circuit, the theoretical benefit of avoiding a 1/4" to 1/8" adapter is likely defeated. So, I recommend sticking with the 1/8" jack and using an adapter.
Quote:
Originally Posted by sharkz
Are these available yet? If not when will they be? And where can I pick one up from?
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I should have the new PCBs available in 2 weeks and will continue sales on eBay.
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Headphones: Beyerdynamic DT-880's, Grado SR-60's with bowls, Sennheiser HD-280 Pro's
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10-12-2007, 01:09 AM
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500+ Head-Fi'er
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Join Date: Jul 2007
Location: Montreal
Posts: 993
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Mea Culpa on amp Burn-In
Hi!
In this thread I posted a snide comment doubting the usefullness and validity of amp burn-in.
Well I want to make my Mea Culpa (a formal acknowledgment of personal fault or error) on this matter.
I have a Go Vibe 7 amp only since a few weeks and the thing sounds different now than during the first hours of use. I used it maybe 40-50 hours and it sounds alot better now! At first it was only loud. Now the sound is more clear and I hear alot of subtilities that were not present before.
This under the same condition: Using the amp connected to the line out of a Cowon X5, with the volume knob of the amp at about 11 o'clock and listening to the same type of music through the same IEM and headphones.
I do not want to steer this thread on the Go Vibe 7 but to state what I observed: The fact of the matter is that burn-in takes some time, even with an amp!
Now I just received a Qables SilverCab Cowon iAudio X5 LOD and very curious of changes occuring...in time...
regards,
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Listening lately to:JS Bach, Soft Machine 6, Neil Young Harvest, Gentle Giant -Three Friends,Zappa- Grand Wazoo, Pink Floyd, Headhunters Herbie Hancock.
Sansa Fuse, Ipod Video, Cowon D2, U3.
Sony MDR F1, MDR V6, Sportapro, HD 580, Atrio M8.
GO Vibe 7, PA2V2
Want to listen to: Ultrasone , Audio Technica ATH-AD2K, Denon 2K-5K, DT770 Darth Beyers, Beyerdynamic DT250/80; Qables iQube
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10-12-2007, 08:16 AM
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Headphoneus Supremus
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Join Date: Aug 2007
Location: Rocky Mountains, CO
Posts: 11,823
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Quote:
Originally Posted by Caribou679
Hi!
In this thread I posted a snide comment doubting the usefullness and validity of amp burn-in.
Well I want to make my Mea Culpa (a formal acknowledgment of personal fault or error) on this matter.
I have a Go Vibe 7 amp only since a few weeks and the thing sounds different now than during the first hours of use. I used it maybe 40-50 hours and it sounds alot better now! At first it was only loud. Now the sound is more clear and I hear alot of subtilities that were not present before.
This under the same condition: Using the amp connected to the line out of a Cowon X5, with the volume knob of the amp at about 11 o'clock and listening to the same type of music through the same IEM and headphones.
I do not want to steer this thread on the Go Vibe 7 but to state what I observed: The fact of the matter is that burn-in takes some time, even with an amp!
Now I just received a Qables SilverCab Cowon iAudio X5 LOD and very curious of changes occuring...in time...
regards,
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ROTFLOL!! 
Really, laughing. I knew this would happen, it's all good 
__________________
Quote:
Originally Posted by Leonardo_BVB
...honestly, it's like comparing ugly Betty with Scarlett Johjansson, you do not know where to start because you cannot take your eyes off Scarlett...
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Larry Head-Fi Feedback
Oct 09 Colorado CanJam @ RMAF Impressions
SEE PUBLIC PROFILE "ABOUT ME" FOR LINKS TO REVIEWS AND MY GEAR.
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10-12-2007, 10:35 AM
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100+ Head-Fi'er
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Join Date: Apr 2007
Location: Hawaii
Posts: 194
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Well, the concept is easy to understand. At some point the digital signal gets converted into an analog signal, and since electronic devices themselves are physical objects, the electrons and silicons within the electronic device will gradually affiliate themselves with a certain pattern.
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Pico DAC/amp -> Westone 3
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10-14-2007, 12:39 AM
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Head-Fi'er
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Join Date: Jun 2007
Location: Rolla, USA
Posts: 76
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Quote:
Originally Posted by Ranma13
Well, the concept is easy to understand. At some point the digital signal gets converted into an analog signal, and since electronic devices themselves are physical objects, the electrons and silicons within the electronic device will gradually affiliate themselves with a certain pattern.
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I have an idea that may give us a graphical view of the effect of burn in, but I don't have any burned in amps this week. I'll post some graphs after I've burned in some of the new amps.
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Headphones: Beyerdynamic DT-880's, Grado SR-60's with bowls, Sennheiser HD-280 Pro's
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10-15-2007, 03:12 AM
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Headphoneus Supremus
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Join Date: Dec 2003
Location: Philadelphia, PA USA
Posts: 2,038
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The second Volume Pot prototype (with more space between jacks and pot) has reached its SQ zenith at around 60 hours of use, this time with a higher quality IC - which now fits between the input jack and volume pot. Everything I've ever posted about the SQ of the cMoyBB is as true as ever, only better now than before through the use of better quality IC's. I must repeat that the cMoyBB, with the clean transparency, spacious openness and elegant simplicity of its sound, fills a needed and enjoyable niche as a listening instrument in the collection of home and portable amps I already use.
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Offline Rig: Pioneer DV563A, DV578A (VD David 1.0 PC) -> Sonicwave Glass Toslink -> Headroom 2007 Ultra Micro DAC (Desktop PSU, VD Nite II PC) -> VD Master 2.0 IC -> stock Purity Audio KICAS Caliente -> Senn HD650 (ALO 18AWG Jena Cryo cable), Yuin PK1, Ultrasone ALO-780
Computer Rig: Creative Emu 1212m (IeGO 70530 PC) -> Glass Toslink-> Same downstream as Offline Rig
Work Rig: iBasso D10 (Topkit) (USB DAC/Amp) -> Yuin PK1, Shure SE530
-OR- AMP3 with (stock) PAA-1 earbuds
Bedside Rig: 5.5G RWA iMod -> ALO VCap Dock (VHAudio OIMP) -> Zynsonix ZYN mkII RCA pair -> ALO/RWA Amphora (iMod version), Mapletree Ear+ Purist HD (VD Nite PC) -> Ultrasone ALO-780, HF-2 (#129), ALO-Modded SR225 (18AWG Jena Cryo cable), SE530, HD600(Cardas)
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