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| Headphone Amps (full-size) Discussion of desktop headphone amps. |
09-10-2007, 05:14 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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Quote:
Originally Posted by HeadphoneAddict
You might want to re-think the in/volume/out being that close together.
Some people have 3.5mm plugs that are too fat to fit into those jacks!
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Hence the layout adjustments I mentioned  The final PCBs will not be so cramped.
Some of the components I use are backordered until October, so no more sales until then.
__________________
Headphones: Beyerdynamic DT-880's, Grado SR-60's with bowls, Sennheiser HD-280 Pro's
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09-11-2007, 08:07 AM
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100+ Head-Fi'er
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Join Date: Jan 2004
Location: Utah
Posts: 118
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Quote:
Originally Posted by blackinches
Some of the components I use are backordered until October, so no more sales until then.
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I just saw these for the first time a couple days ago, and *just* missed the last ones on ebay. Oh well. I'll be watching for your next iteration in October.
__________________
----------------------------------------------
DOWN, wallet! Stay! STAY!
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09-16-2007, 05:38 AM
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100+ Head-Fi'er
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Join Date: Jan 2007
Posts: 203
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Okay, I just received my CmoyBB on Friday, and I can really tell that it helps out the low end on my UE Super.fi 3s, which really need help in the bass dept. It amplifies the hiss on my h320 to a fairly high level, so I used the included volume attenuator, which seemed to have solved the hiss problem, although I'm afraid I'm missing out on the real sound by using the attenuator.
I've been using the amp with a cheap Radioshack cable, so I'm wondering if using maybe a Cardas IC would lessen the hiss. Also, this amp seems to be well made. Nothing jiggles, the battery assembly looks very sturdy, overall a very solid product. So far, I'm very satisfied.
P.S. The led is very bright. Don't stare directly into it for too long. 
__________________
Home/Portable Rig: Altec Lansing IM716>CmoyBB>iRiver h320 (Rockbox'ed)/iBook
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09-16-2007, 09:33 PM
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Headphoneus Supremus
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Join Date: Sep 2005
Location: Hampshire, England
Posts: 3,564
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Altoids has always been too close to Hemorrhoids for me.
__________________
Sources:foobar w/FLAC[Vista64/WASAPI] > Juli@ > Optical > Headroom MicroDAC/Headroom MicroAmp
Portable Sources:32GB Cowon S9, 16GB Cowon D2+ w/32GB Verbatim Class 6 SDHC
Headphones:Sennheiser HD 650[Cardas], Sennheiser HD 595/50Ω, Audio-Technica ATH-ESW9, Audio-Technica ATH-A900, Koss KSC-75
Last.fm
I'm disabled, so expect a few typos.
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09-16-2007, 09:57 PM
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Headphoneus Supremus
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Join Date: Jun 2005
Posts: 3,693
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Quote:
Originally Posted by Chri5peed
Altoids has always been too close to Hemorrhoids for me.
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That's strange. Most humanoids are more readily aware of the differences.
__________________
FWIR = From What I Read or From What I've Read
Properly adjust your HD650, HD600, HD580.
Team: Preference, Synergy, and Utility
Please make your posts more helpful by stating what equipment the mentioned headphones are plugged into. Headphones often sound worse or much better depending on the source and amp used. Your signature won't help those who later read your post after you've changed your sig to a new rig. Thank you!
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09-16-2007, 10:30 PM
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Headphoneus Supremus
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Join Date: Sep 2005
Location: Hampshire, England
Posts: 3,564
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Do you know what Hemorrhoids are?
Bum grapes.
__________________
Sources:foobar w/FLAC[Vista64/WASAPI] > Juli@ > Optical > Headroom MicroDAC/Headroom MicroAmp
Portable Sources:32GB Cowon S9, 16GB Cowon D2+ w/32GB Verbatim Class 6 SDHC
Headphones:Sennheiser HD 650[Cardas], Sennheiser HD 595/50Ω, Audio-Technica ATH-ESW9, Audio-Technica ATH-A900, Koss KSC-75
Last.fm
I'm disabled, so expect a few typos.
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09-16-2007, 11:18 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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Hehe, here's my dish of Altoids:
I added as much space as I can between the RK097 and mini jacks and am now utilizing a ground plane. Prototype boards will arrive around the same time as I resume sales:
__________________
Headphones: Beyerdynamic DT-880's, Grado SR-60's with bowls, Sennheiser HD-280 Pro's
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09-18-2007, 02:46 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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I purchased a cMoyBB with a Volume Pot built from one of the earlier prototype boards, and it arrived on Friday. I've had it running on two 9V batteries in series and burning in since then. As the burn-in has progressed, the sound of the Bass Boost has become clearer, cleaner and more transparent, as has the sound of everything, as I would expect. I've got to say that the cleanness, openness, spaciousness and transparency of the sound has become a very real pleasure to listen to. At this point, the Bass Boost has become so clean and transparent that I've been leaving it on all the time for a fuller spectral sound and (not sure why) a deeper and more credible, coherent soundstage to my ear.
I paid an additional $10 for the Volume Pot and, soundwise, this amp offers a really fine value. From operatic soprano to Joe Satriani (with Classic Rock, Trip-Hop, Fusion, Ambient/Techno electronica in between), the sound draws me right into the music with the performers, with loads of intimacy, expressive energy and a very credible sense of space and presence to my ear. The balance and synergy between the sonic facets of the cMoyBB make this one of those listening tools for which the whole is a good deal more than the sum of its parts.
__________________
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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09-18-2007, 03:15 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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Quote:
Originally Posted by sbulack
I purchased a cMoyBB with a Volume Pot built from one of the earlier prototype boards, and it arrived on Friday. I've had it running on two 9V batteries in series and burning in since then. As the burn-in has progressed, the sound of the Bass Boost has become clearer, cleaner and more transparent, as has the sound of everything, as I would expect. I've got to say that the cleanness, openness, spaciousness and transparency of the sound has become a very real pleasure to listen to. At this point, the Bass Boost has become so clean and transparent that I've been leaving it on all the time for a fuller spectral sound and (not sure why) a deeper and more credible, coherent soundstage to my ear.
I paid an additional $10 for the Volume Pot and, soundwise, this amp offers a really fine value. From operatic soprano to Joe Satriani (with Classic Rock, Trip-Hop, Fusion, Ambient/Techno electronica in between), the sound draws me right into the music with the performers, with loads of intimacy, expressive energy and a very credible sense of space and presence to my ear. The balance and synergy between the sonic facets of the cMoyBB make this one of those listening tools for which the whole is a good deal more than the sum of its parts.
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Excuse my asking but: isn't burn-in usefull for lamps amp?
I do not think that the condensers or resistors in the amp you have will change their characteristics in time or with use. 
Please let me know as I am still wondering about that. 
Last week I received another brand of headphone amp and it sounds the same after 30 hours of use compared to when I received it.
regards,
__________________
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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09-24-2007, 01:24 PM
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Headphoneus Supremus
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Join Date: Jul 2007
Location: South-East - United Kingdom.
Posts: 2,780
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i really dont know what to get?? royal penguin, or caffeine, or this or ?? (cant remember what else i was looking at, will edit)
-= Matt =-
__________________
Sources: iPod Video (Black - Best Skins Ever - iSkin eVo3 - 60gb - FiiO L1 Low Profile LOD), Laptop w/DAC, Gaming PC. -eBay Feedback.-
Amp's/DAC's: FiiO E1 remote and amp, NuForce Icon Mobile (WTB!). Old receiver fed by an Alien DAC (planned!)-Head-fi Feedback.
Headphones/Speakers: Denon D1001s, NuForce NE-6, Livewires T1 Customs, Sennheiser MX500W, Modded KSC75's, Yuin PK2/PK3/Hisound PAA-1 (soon), Labtec 2.1 Speakers, Passive Bookshelves/Close-range monitors (soon). Last.fm.
WANTED: NuForce Icon Mobile. PM ME!
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09-24-2007, 09:20 PM
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Headphoneus Supremus
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Join Date: Jul 2007
Location: South-East - United Kingdom.
Posts: 2,780
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OMG I read the whole thread now i have some time, and i really want one now, i think the bass boost will be good, as i isten to some bassy music too, sometimes.....I think i would have dual gain, for maybe oneday when i have some decent headphones, and low gain for my er6i's. i would hopefully have the Gain and bass boost switches inside the tin, and an OPA2227 (are they user replaceable on your amps??) i would have the plain tin......
In october how much would the amp cost approximatley? (With the stuff i want) and the cheapest shipping to the UK.
I need to save up the right ammount!
Thanks in advance, please reply!
-= Matt =-
__________________
Sources: iPod Video (Black - Best Skins Ever - iSkin eVo3 - 60gb - FiiO L1 Low Profile LOD), Laptop w/DAC, Gaming PC. -eBay Feedback.-
Amp's/DAC's: FiiO E1 remote and amp, NuForce Icon Mobile (WTB!). Old receiver fed by an Alien DAC (planned!)-Head-fi Feedback.
Headphones/Speakers: Denon D1001s, NuForce NE-6, Livewires T1 Customs, Sennheiser MX500W, Modded KSC75's, Yuin PK2/PK3/Hisound PAA-1 (soon), Labtec 2.1 Speakers, Passive Bookshelves/Close-range monitors (soon). Last.fm.
WANTED: NuForce Icon Mobile. PM ME!
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09-24-2007, 10:20 PM
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Headphoneus Supremus
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Join Date: Sep 2005
Location: Hampshire, England
Posts: 3,564
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Quote:
Originally Posted by Caribou679
Excuse my asking but: isn't burn-in usefull for lamps amp?
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This is a sub-genre of the whole 'Burn-in' debate.
Personally I'm a believer of it in moving things[HP drivers] but not in static things.
__________________
Sources:foobar w/FLAC[Vista64/WASAPI] > Juli@ > Optical > Headroom MicroDAC/Headroom MicroAmp
Portable Sources:32GB Cowon S9, 16GB Cowon D2+ w/32GB Verbatim Class 6 SDHC
Headphones:Sennheiser HD 650[Cardas], Sennheiser HD 595/50Ω, Audio-Technica ATH-ESW9, Audio-Technica ATH-A900, Koss KSC-75
Last.fm
I'm disabled, so expect a few typos.
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09-25-2007, 12:31 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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Quote:
Originally Posted by Chri5peed
This is a sub-genre of the whole 'Burn-in' debate.
Personally I'm a believer of it in moving things[HP drivers] but not in static things.
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I have read a thread at Head-Fi about the usefulness of burn-in in lamps amp. I only own "cmoy" type amps so I cannot voice in favor of lamps amp but for the solid state I do not perceive a difference in time and use.
I fully agree with you as regard usefulness in mechanical parts, like headphones and earphones, where a coil is acting against a membrane or whatever...
But if I smoke a few good ones I might think the former
__________________
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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09-25-2007, 01:36 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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I think you're gonna upset a few people about this.
This particular CMoy bass boost does use a capacitor that might need burn-in or time to "form". The builder does say it will work well without a cap. On this particular amp I can say it has changed a little, acheiving a mildly to oderately improved soundstage vs new. I reported on this earlier.
However, I can vouch for, affirm, or attest to the fact that my iBasso D1 and my PenguinAmp Royal have had even more significant changes as they put more hours on the clock, they use significantly bigger caps...
__________________
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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09-25-2007, 01:36 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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I think you're gonna upset a few people about this.
This particular CMoy bass boost does use a capacitor that might need burn-in or time to "form". The builder does say it will work well without a cap. On this particular amp I can say it has changed a little, acheiving a mildly to oderately improved soundstage vs new. I reported on this earlier.
However, I can vouch for, affirm, or attest to the fact that my iBasso D1 and my PenguinAmp Royal have had even more significant changes as they put more hours on the clock, they use significantly bigger caps...
__________________
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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