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| Headphone Amps (full-size) Discussion of desktop headphone amps. |
05-15-2007, 05:16 PM
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500+ Head-Fi'er
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Join Date: Nov 2006
Location: London/Oxford
Posts: 766
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gotta say that's looking a lot like it could be a four channel system 
Larocco usually put gain switches on right between medium and high? I would've thought E500 should be able to avoid hiss.
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05-15-2007, 08:13 PM
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Headphoneus Supremus:
Reviewerus Prolificus
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Join Date: Apr 2005
Location: Chicagoland
Posts: 11,434
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I will have to try the E500's later. I will do so and report back.
The Lisa III is actually a 3-channel amp, according to Phil. My proto at least does not have a gain switch that I know of.
__________________
PLEASE NOTE: Due to the volume of PM's I have been receiving in connection with my reviews, I no longer have the time to answer PM's from people with zero posts. Please read head-fi first before asking questions.
Team GO-U-NORTHWESTERN
Pics: Main Home Rig; Bedside Rig; Office Rig; Portable Rig;
Headphones: JVC HP-DX1000, HA-RX900; Headphile Deep Cup Darth Beyers VXD3,VXD4; Beyerdynamic DT990/600 (Manufaktur) DT770/600 (Manufaktur), DT880/600 Balanced (Manufaktur); HiFi-Man HE-2 Planar Magnetic; Sennheiser PXC-350; Shure SRH840
Home amps: Ray Samuels Audio Stealth (Mullard ECC32/CV4003); Decware Zen CSP-2 (Amperex BB 6DJ8/Sophia Princess 274B); Darkvoice 337 (GEC 6AS7G's/Tung-Sol mesh plate 6SJ7GTs); Wheatfield Audio HA-2 (Mullard ECC32/GEC 6AS7G/GEC U52); Ming-Da MC84-C 07 (Mullard CV4004/EL84/EM87); Audiotailor Jade (GEC 6AS7G/Sylvania 5751); J. Sound Lab Headphone (Mullard 12AT7); Audio-GD Phoenix; Musical Paradise MP-301 (Ken-Rad 6V6GT/Mullard 6AU6)
Portable Amps: Ray Samuels Audio P-51 Mustang; Decware ZenHead; Qables iQube
Sources: Denon DP59L table + Clearaudio Maestro Wood / VPI Scoutmaster + Benz Micro Wood L2 > Audio Electronics PH-1 DJH Phono Preamp; Music Hall 25.2 DAC; Denon DVD-5900;Red Wine Audio iMod iPod (Apple Lossless) & ALO VCap dock; Sony SCD-555ES SACD player
Loudspeaker system: Krell KAV250 Preamp>Sunfire Signature II Power amp > B&W Nautilus 800 Signatures + Velodyne FSR-1500/Martin Logan Descent
Tube testers: B&K Dyna-quick 650 & Dyna-Jet 606
Head-fi feedback
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05-15-2007, 11:14 PM
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Head-Fi'er
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Join Date: Dec 2005
Posts: 92
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I hope they provide enough boards for the early adopters. I think it's fantastic that they're telling you how to build them AND provided the resources to do so on an item that's going up for sale in the public marketplace.
Looks like a great summertime project the board layout is so very clean, everything looks board mounted!
Hopefully I'm paying attention when this goes down.
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05-16-2007, 12:30 AM
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Headphoneus Supremus
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Join Date: Jul 2005
Location: Miami Beach, Florida
Posts: 16,100
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You know if instead of:
- A 1/4" headphone he installed a 1/8" headphone jack,
- Removed the RCA's,
- Used a Li-Ion battery pack
Then the unit would be smaller and more likely to be carried as such. Since he is planning on a couple of models this could be achieved.
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05-16-2007, 12:49 AM
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Headphoneus Supremus
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Join Date: Sep 2005
Location: Virginia,USA
Posts: 9,901
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Thanks for your fine work on this Skylab. She looks like a winner.
As mrarroyo mentions, it sure would be nice to have options..especially a rechargeable Li-Ion battery. I like the RCA though, I've gotten spoiled having this with my new amp even though it does add an extra 1/4" to the length.
Is there a price for this?
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05-16-2007, 01:09 AM
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Headphoneus Supremus:
Reviewerus Prolificus
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Join Date: Apr 2005
Location: Chicagoland
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No price that I know of yet, nor a delivery date ETA yet.
__________________
PLEASE NOTE: Due to the volume of PM's I have been receiving in connection with my reviews, I no longer have the time to answer PM's from people with zero posts. Please read head-fi first before asking questions.
Team GO-U-NORTHWESTERN
Pics: Main Home Rig; Bedside Rig; Office Rig; Portable Rig;
Headphones: JVC HP-DX1000, HA-RX900; Headphile Deep Cup Darth Beyers VXD3,VXD4; Beyerdynamic DT990/600 (Manufaktur) DT770/600 (Manufaktur), DT880/600 Balanced (Manufaktur); HiFi-Man HE-2 Planar Magnetic; Sennheiser PXC-350; Shure SRH840
Home amps: Ray Samuels Audio Stealth (Mullard ECC32/CV4003); Decware Zen CSP-2 (Amperex BB 6DJ8/Sophia Princess 274B); Darkvoice 337 (GEC 6AS7G's/Tung-Sol mesh plate 6SJ7GTs); Wheatfield Audio HA-2 (Mullard ECC32/GEC 6AS7G/GEC U52); Ming-Da MC84-C 07 (Mullard CV4004/EL84/EM87); Audiotailor Jade (GEC 6AS7G/Sylvania 5751); J. Sound Lab Headphone (Mullard 12AT7); Audio-GD Phoenix; Musical Paradise MP-301 (Ken-Rad 6V6GT/Mullard 6AU6)
Portable Amps: Ray Samuels Audio P-51 Mustang; Decware ZenHead; Qables iQube
Sources: Denon DP59L table + Clearaudio Maestro Wood / VPI Scoutmaster + Benz Micro Wood L2 > Audio Electronics PH-1 DJH Phono Preamp; Music Hall 25.2 DAC; Denon DVD-5900;Red Wine Audio iMod iPod (Apple Lossless) & ALO VCap dock; Sony SCD-555ES SACD player
Loudspeaker system: Krell KAV250 Preamp>Sunfire Signature II Power amp > B&W Nautilus 800 Signatures + Velodyne FSR-1500/Martin Logan Descent
Tube testers: B&K Dyna-quick 650 & Dyna-Jet 606
Head-fi feedback
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05-16-2007, 01:09 AM
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Headphoneus Supremus
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Join Date: Jul 2005
Location: Miami Beach, Florida
Posts: 16,100
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Quote:
Originally Posted by GreatDane
Thanks for your fine work on this Skylab. She looks like a winner.
As mrarroyo mentions, it sure would be nice to have options..especially a rechargeable Li-Ion battery. I like the RCA though, I've gotten spoiled having this with my new amp even though it does add an extra 1/4" to the length.
Is there a price for this?
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1/4" on the outside, however the RCA also extends about 1/2" or so inside the amp for a total of 3/4" to 1".
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05-16-2007, 01:13 AM
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100+ Head-Fi'er
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Join Date: Nov 2006
Posts: 123
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This was next to the DIY stuff at the head-fi meet, right?
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Home: X-fi Coldt Style Modded -> Larocco PRII -> Sennheiser HD650
Portable: Ipod 5G 30g -> Larocco PRII -> Koss KSC 75/UE Super.fi 5 pros
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Feedback
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05-16-2007, 01:17 AM
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500+ Head-Fi'er
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Join Date: May 2005
Posts: 511
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I'm also VERY happy that it's not designed to be a small portable. I love the fact that he has RCA input and 1/8 plug. There are plenty of small portable amps out there but there are not many "transportable battery" amps. There is nothing more fun then being able to go from one room to the other in the house without wire headaches, or in summer, go in the garden sit on a chair and listen to music out of you imod into a battery amp. No messing around with long AC extension. 
I think this amp might be a genious design if sound quality is there to match or better the very few others in its niche (RSA XP-7, Rudi NKK01, HeadRoom Micro,...).
__________________
Current headphone: AT W5000, Vmoda Vibes, Audio Technica ES5, Sony EX71, Koss Porta Pro
Headphone amps: Yamamoto HA-02, TTVJ portable Millett
Source: Rotel RCC-940AX, MHDT Paradisea DAC, Echo Indigo DJ, RWA SB2, Imod, Denon 2900
Previously owned cans: AT W1000, Shure E500, AKG 271, Beyer 880, Beyer DT511
Previously owned amps and sources: RSA XP-7, Jasmine T-200, LisaIII, Rudistor NKK-01, RSA SR-71, Tomahawk, PortaCorda MKII, HagUSB, Arcam CD23T
Speaker rig: RWA SB2 > Paradisea > Audio Aero Prima MKII integrated amp > GR Research A/V-3, SW-12
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05-16-2007, 03:37 AM
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Head-Fi'er
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Join Date: Oct 2006
Location: HeadphoneHaven
Posts: 72
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Looks like something which I will never want to miss out on 
especially when i have a fetish for woodies for my audio stuff =x
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RedWineAudio 40GB iPod Photo (White) → Jena Cryo Copper IC → ahdui's Enfo PA-1 → Ultimate Ears Super.Fi 5EB
iRiver h120 w LCD Remote → y-1 DAC (MisterX Custom Mod) → Ultra Low-Profile Optical Cable → Jena Cryo Copper IC → ahdui's Enfo PA-1 → Shure SE530 w Westone UM56
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05-16-2007, 04:29 AM
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Member of the Trade:
Rudistor Sound Systems
US/Canada
Proved that despite its huge size, the CD3000 can be shoved down one's throat.
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Join Date: Jul 2002
Location: West New York, NJ
Posts: 12,200
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I was talking with Phil a while back about this amp, while it was in the beginning, and this amp is not in the league of portable amps at all, it will fall better in the league of the home based amps, or at least bigger transportable amps.
It is a three channel amp, runs in two 9V batteries (18 volts), has a triad discrete dynamically biased diamond buffer, etc....so please do not try to compare it with portable amps, whith more humble topologies, power requirements and targeted for a different use....Xin amps, TMK, etc...while very good amps, are just very small enjoyable portable amps, which target market is different, and they run at very low voltages, so I do not think it is fair comparison neither to compare an amp that runs at 3V, 6V to one that runs at 18 volts, which give you more margin for refinement and to work on a more solid toplogy...
__________________
I do love the Edition 9, and probably you know what that means, so you have been warned...!!!
Disclaimer: Please assume every single of my statements, to mean: “in my system”, “to my ears”, "in my experience", “in my opinion”, etc...(otherwise stated).
Neutrality, accuracy? OK, just ask yourself first: Do you certainly know how the recording is supposed to sound? Sorry, but for me euphony is all about!!! Please do yourself a favor, stop listening your gear, and enjoy the music instead!!!
Home setup: Sony DVP-NC555ES => BJC IC's => RPX-33 MKII/RPX-31 => UE9
"On the go" setup: Panasonic SL-CT570 => XJ-03 => Sleek SA6/Klipsch Images X5/X10
Proved that despite its huge size, the CD3K can be shoved down one's throat...wait...but now I'm shoving the Ultrasone Edition 9???
EQUIPO HEAD-FI HISPANO: DILE ADIOS A TUS AHORROS!!!
My feedbacks in: Head-Fi , eBay and Amazon
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05-16-2007, 04:41 AM
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100+ Head-Fi'er
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Join Date: Sep 2005
Location: Phuket, Thailand
Posts: 326
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Excellent news. From the talks around DIY, the LISAIII is predicted to have certain similarities to the audio resolution of the PPA2. I have complete faith in the sound quality of this amp and the effort PPL gave in designing the schematics. A true piece of art evolving from the PPAs, Pint and LISA series. Another good thing too is that its a DIY project that anybody can try so they can save hard earned cash without skimping on audio resolution. The layout is open for public in all its honest goodness and its a warrior in sound quality. As for having the amp made by Phil, we have seen the quality of the amps from LaRocco so I have no doubt a LISA3 made by Phil would surely oooze with the same quality (or even better) without the same problems in ordering. Thanks, Skylab for this review and announcement.
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Can Moby-Dick tame the Shrew?
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05-16-2007, 07:35 AM
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Headphoneus Supremus
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Join Date: Jun 2006
Location: Seattle
Posts: 2,050
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cool stuff
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"DBT is for suckers"
BIG POPPA
Feedback BIG POPPA
Home Rig:
Arcam CD73, WOO 3+ very upgraded, Senn HD580 with Custom Kimber Kable Headphone cable and DIY interconnects, MS-1's recable with Silver plated copper, Custom power cables,Custom IC's and Audio grade fuses ALO Wood Ipod Dock
Portable:
5G ipod or CD player, Red Tomahawk or Portiphile, Koss Ksc-75's recabled by Apuresound with a 75 Ohm resistor, Livewires T1, Headroom 4" mini to mini, ALO Bling Bling dock
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05-16-2007, 09:45 AM
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Member of the Trade:
Triad Audio
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Join Date: Apr 2007
Posts: 116
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Quote:
Originally Posted by Skylab
No price that I know of yet, nor a delivery date ETA yet.
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Yep, And no crystal ball either, Phil & I will let you know as things develop.
We are working on the details daily, not ready to give numbers. WOW, it was only at the 07 Headfest that I realized how good LISA really is, and what a niche, I brought the 2 prototype LISA's . I thought they sounded better than most amps there, and runs on batteries! But I am biased, I helped build them.
Still.. thats when the decision was made to produce & market Lisa III's
for the world. Oh Ya. Phil's motivation is to share his design goodness with the world. his motivation is Pure. He enjoys what he does & thats why I'm involved. To allow him to reach his goals. I'm having fun too. its exciting,stressing at times, but never dull. So "Make you own world" thats my motto
What do you want? A WOODY? You got it. (follow my earlier posts) Post a pic of the other side Skylab, its reversable.(please) And thanks for the good words Skylab. We will have to rethink production numbers now. 
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05-16-2007, 09:59 AM
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500+ Head-Fi'er
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Join Date: Oct 2006
Location: BKK Thailand
Posts: 596
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Can't wait to see the production one. Cute name too. Hope it sets a trend in naming amps.
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on a quest for biggest bang for bucks plus best portability:performance ratio
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