jds-labs-c421-headphone-amplifier
  1. Yuceka

    iPad line out hissing?

    I just got down to try my iPad with my portable amp and i hear this unbearable hissing sound coming out of the gear. I tried the same configuration with my iPhone 3GS and no hiss at all. Is this a common problem among iPad users ? Mind you that this is the 1st generation iPad. Has anyone else...
    • Yuceka
    • Thread
    • apple-ipad-2-mc980ll-a-tablet-32gb-wifi-white-newest-model jds-labs-c421-headphone-amplifier portable-source-components
    • Replies: 5
    • Forum: Portable Source Gear
  2. KimChee

    Upgrade From E11 For JH-16

    Hey guys,   I'm looking to upgrade my portable rig from my E11.  So far I'm looking at the Alo Rx II, Pico Slim, and Headstage Arrow 4G.  Anyone have any other opinions on a portable amp?
    • KimChee
    • Thread
    • fiio-e11 ibasso-pb-2-pelican headamp-pico-slim-portable-amp headphone-amplifiers portable-amps jds-labs-c421-headphone-amplifier leckerton-audio-uha-4-slimline-portable-amp ray-samuels-p-51-mustang meier-audio-stepdance jh-audio-jh16-pro-custom-in-ear-monitors headstage-arrow-12he practical-devices-xm6
    • Replies: 4
    • Forum: Portable Headphone Amps
  3. Kanashimu

    c421 vs O2 - home amp?

    I plan to use an amp with my Miracle. It'll probably be paired with the DX100 if I can get one. I've heard of lots of good things about the Objective 2 / DX100 pairing, but how does the c421 compare? Its strictly for home use - I won't carry and amp + a brick for portable use, so disregard...
    • Kanashimu
    • Thread
    • jds-labs-assembled-objective2-headphone-amplifier headphone-amplifiers jds-labs-c421-headphone-amplifier ibasso-dx100-reference-dap
    • Replies: 68
    • Forum: Portable Headphone Amps
  4. charliesheen

    Which amps go well with PRO 2900?

    Hello,   I've just ordered Ultrasone Pro 2900 as my first headphones. I'll be mainly using them for listening electronic music (deep/tech mostly).    They will be connected to my laptop most of the time which has a Realtek HD card, but it will be nice if they are also portable.  ...
  5. DavidR

    IPhone Amp...which one?

    I'm upgrading my IEM from UE SuperFi 5 to a pair of Shure SE425.  My search for higher music quality from my Iphone lead me to wanting some form of amp to further improve the sound quality.   My question is, which one?  I'm lost.  I listen to music 5-7 hours a day, in a typical office.  I...
    • DavidR
    • Thread
    • jds-labs-c421-headphone-amplifier leckerton-audio-uha-4-slimline-portable-amp ibasso-d-zero fiio-e6-headphone-amplifier ray-samuels-p-51-mustang in-ear triad-audio-l3 fiio-e17
    • Replies: 15
    • Forum: Portable Headphone Amps
  6. Anathallo

    JDSLabs C421 Preorder is live...

    Two opamp choices available - one for higher impedance cans, one for lower (JDS states the one suited for higher impedance cans emphasizes bass over transparancy).  It doesn't look like they can be rolled.   http://blog.jdslabs.com/?p=179     According to the blog entry, only 95 amps...
    • Anathallo
    • Thread
    • headphone-amplifiers jds-labs jds-labs-assembled-objective2-headphone-amplifier jds-labs-c421-headphone-amplifier jds-labs-cmoybb portable-amps
    • Replies: 691
    • Forum: Portable Headphone Amps
  7. lXxCannibalxXl

    Sennheiser HD25-1 II

    Hey ,  I just bought my Sennheiser HD25-1 II after days of reserching and i was wondering which amp suit my "situation" best. As you might have figured out i'm new to the hi-fi world however my taste in music built up with years of listening to various music , mostly metal.(My english is not...
    • lXxCannibalxXl
    • Thread
    • fiio-e11 jds-labs-cmoybb headphone-amplifiers jds-labs-assembled-objective2-headphone-amplifier portable-amps jds-labs-c421-headphone-amplifier sennheiser-hd-25-1-ii-professional-headphone electric-avenues-pa2v2 sennheiser-adidas-hd-25-1-ii-orginals-headphones-black-blue
    • Replies: 50
    • Forum: Portable Headphone Amps
  8. ShaggyOtis

    Suggest a good amp/dac for a pair of AKG Q701's?

    Hey all, I'm new here and I have to start with a big question. After hours and hours of review watching and testing and review reading, I've decided to buy the AKG Q701 headphones. I have a home studio and I'm sure these are great headphones for studio use and monitoring and such, but I'd also...
    • ShaggyOtis
    • Thread
    • fiio-e11 headphone-amplifiers portable-amps jds-labs-c421-headphone-amplifier akg-q701-premium-class-reference-headphones-quincy-jones-signature-line fiio-e17
    • Replies: 20
    • Forum: Portable Headphone Amps
  9. sid12345678910

    200 or less neutral desktop amp

    Hay guys   i am looking for a desktop amp that very nutral   i am not particully using high impedance headphones with usally my shure 440s and my Sennheiser HD 438 and my futer sonic atrios, i just want to get the most out of them, i am conaiderning mabey buying some xb 1000 or...
    • sid12345678910
    • Thread
    • fiio-e11 schiit-asgard-headphone-amplifier headphone-amplifiers fiio-e9-desktop-headphone-amplifier-and-dock-for-e7-usb-dac desktop-amps jds-labs-c421-headphone-amplifier violectric-hpa-v200 epiphany-acoustics-ehp-o2 matrix-m-stage violectric-hpa-v100
    • Replies: 36
    • Forum: Headphone Amps (full-size)
  10. Kunlun

    Apex Glacier amp/dac review and appreciation thread

    The successor to the TTVJ Slim is out, the new Apex Glacier   I just got mine and I'll update this post as people start getting theirs and put up reviews and comments.   From talking to Todd, the dac is a big step up from the old one in the Slim. While the amp is basically the same, it...
    • Kunlun
    • Thread
    • apex-high-fi-audio-glacier-portable-amp-dac jds-labs-c421-headphone-amplifier samsung-galaxy-note-2 etymotic-er-4p-portable-in-ear-earphones samsung-s3-4-gb-slim-portable-media-player-blue apple-iphone-5 apple-ipad-mc705ll-a-16gb-wi-fi-black-newest-model ttvj-portable-slim samsung-s3-4-gb-slim-portable-media-player-pink westone-es-5
    • Replies: 861
    • Forum: Portable Headphone Amps
  11. Carboknight

    What gear do I need to power my Beyerdynamic DT 770 Pro 250 ohm headphones?

    I've just bought a new pair, and I am a TOTAL NOOB to high end headphones. I almost bought a pair of Beats Studio before I stumbled upon this site. I like portability so I was wondering which of the FiiO amps to buy, which line out dock to buy, and whether I need a new sound card for my...
    • Carboknight
    • Thread
    • fiio-e11 jds-labs-cmoybb jds-labs-c421-headphone-amplifier fiio-e6-headphone-amplifier beyerdynamic-dt-770-stereo-headphones beyerdynamic-dt-770-pro-closed-studio-headphones-250-ohms fiio-andes-e07k-portable-usb-dac-and-headphone-amplifier-96khz-24-bit fiio-e17 beyerdynamic-dt-770-32-ohm
    • Replies: 11
    • Forum: Headphones (full-size)
  12. Sylaw

    suggest me a good mid forward amp( sub 170$)

    Hey guys :) im having lots of iem's in my collection yet I don't use them most of the time. only pairs I use are the mighty W4's , IE80's ER4's and EX1000's. and I kind of prefer a pretty mid emphasized signature. So the reason I wanna buy e Mid forward amp is that my IE80's mid range seems...
    • Sylaw
    • Thread
    • apple-ipod-classic-160-gb-7th-generation audio-chi-w4 etymotic-research-er4s-micropro-reference-earphones fiio-e11 jds-labs-c421-headphone-amplifier jds-labs-c5-headphone-amplifier sennheiser-ie80 sony-mdr-ex1000
    • Replies: 10
    • Forum: Portable Headphone Amps
  13. Clincher09

    Best $100 amp?

    I'm currently running my Denon D2000s through a Fiio E11. However, I know that this amp isn't bringing these phones to their true potential. Also the short battery life and inability to charge while in use is kind of killing it for me.   I've been out of the game for a while and have no idea...
    • Clincher09
    • Thread
    • fiio-andes-e07k-portable-usb-dac-and-headphone-amplifier-96khz-24-bit fiio-e10 fiio-e11 fiio-e12-mont-blanc fiio-e17 fiio-e6-headphone-amplifier fiio-x3-portable-music-player hifiman-ef2a-usb-headphone-amplifier ibasso-dx50-dap jds-labs-c421-headphone-amplifier jds-labs-c5-headphone-amplifier jds-labs-o2-odac lawton-audio-la-d2000 little-dot-mk1-mki-standard-edition-portable-headphone-amplifier little-dot-mk2-mkii-6j1-x2-6n6-x2-headphone-amp-amplifier-pre-amp-tube schiit-magni
    • Replies: 11
    • Forum: Portable Headphone Amps
  14. ClieOS

    The Sub-$200 Portable Amps Shootout – 13 (+11) amps compared

    This is basically an extension of the sub-$100 amp shootout as the evaluation and scoring method are essentially the same. As always, this comparison is only a subjective evaluation and nothing more than my own personal opinion.   Evaluation Method Sources: Sansa Fuze via custom LOD...
    • ClieOS
    • Thread
    • digizoid-zo2-personal-hi-fi-experience etymotic-research-er4s-micropro-reference-earphones fiio-e12-mont-blanc fiio-e17 headroom-total-bithead-headphone-amp-dac ibasso-d-zero ibasso-t3 ibasso-t5 jds-labs-c421-headphone-amplifier jds-labs-c5-headphone-amplifier jds-labs-objective2-assembled-pcb lear-fsm-2-v2-portable-headphone-amplifer leckerton-audio-uha-4-slimline-portable-amp meier-audio-stepdance sandisk-sansa-fuze-v2 shure-se530-sound-isolating-earphones
    • Replies: 614
    • Forum: Portable Headphone Amps
  15. Octose

    Portable Amp for M100s and M80s (V-Moda's)

    Hi guys, I purchased both pairs of these cans because I was in need of some new sound! I have been researching a solid portable amp that I can use at home and on the go, I have looked a lot into the JDS Labs CMoyBB and the c421. But I was curious if there was anything else that's really good...
    • Octose
    • Thread
    • jds-labs-cmoybb v-moda-crossfade-m-80 v-moda-crossfade-m-100 jds-labs-c421-headphone-amplifier
    • Replies: 0
    • Forum: Portable Headphone Amps
  16. maximilians

    Sennheiser HD 598 + Fiio E11 is it good enough?

    Hey everybody, i already had sennheiser HD 598, and i had Fiio e6 too. But somehow i lil bit dissapointed my amp, i dunno why, but it is. I want to upgrade my amp, someone tell me to buy Cmoy, but in my country its a lil bit hard to find it. The most common was fiio product. And Mike from...
    • maximilians
    • Thread
    • fiio-e11 fiio-e17 fiio-e5-headphone-amplifier fiio-e6-headphone-amplifier headphones jds-labs-c421-headphone-amplifier sennheiser-hd-598
    • Replies: 8
    • Forum: Headphones (full-size)
  17. silverfish

    Hello.

    Hi. I am looking to get my first "audiophile" headphones for christmas. I currently have the bose ie2 in ear headphones and wish to upgrade. I have no idea what ohms and and all that other crap are. I just want some good affordable cans. I am interested in the philips citiscape uptown...
    • silverfish
    • Thread
    • philips-shl5905bk-28-citiscape-uptown philips-fidelio-l1 jds-labs-assembled-objective2-headphone-amplifier beyerdynamic-dt-880-pro-250-ohm-semi-open-reference-headphone jds-labs-c421-headphone-amplifier logitech-ue-6000 hifiman-he-300
    • Replies: 0
    • Forum: Headphones (full-size)
  18. Wolfskie

    Closed Headphones ~$200 for a student

    Hello!   I'm moving to university dormitories soon so unfortunately I'll have to sell my current DAC and headphones because the former is not portable enough and the latter is an open design so less suited for the noisy environment.   I'm thinking of buying a FiiO E10 to serve as a semi...
    • Wolfskie
    • Thread
    • audio-technica-ath-ad700 beyerdynamic-dt-660-premium-headphones beyerdynamic-dt250 beyerdynamic-dt770-pro-limited-edition-32-ohm fiio-e11 headphones jds-labs-c421-headphone-amplifier philips-shl5905bk-28-citiscape-uptown sony-mdr-v6-monitor-series-headphones v-moda-crossfade-m-80
    • Replies: 12
    • Forum: Headphones (full-size)
  19. bukujutsu

    Will a FIIO E6 remove hiss?

    I received my Vsonic GR06s a few days ago and they're great with a Sansa Fuze, but with my laptop and Galaxy S there's a distinct hissing sound. It's probably a hardware problem.    Will the FIIO E6 deal with this? If not, what will that costs under $50? 
    • bukujutsu
    • Thread
    • fiio-e11 head-direct-hifiman-hm-101 vsonic-gr06-pro-dynamic-noise-isolation-earphones-earbuds portable-amps jds-labs-c421-headphone-amplifier ibasso-d-zero fiio-e6-headphone-amplifier samsung-galaxy-s-ii-hd
    • Replies: 6
    • Forum: Portable Headphone Amps
  20. mahesh

    Help me to choose portabe amp

    Hi all headfiers Please help me to choose best sounding portable iem amp I have cowon j3 with akg k3003 Price max 600$ Thx
    • mahesh
    • Thread
    • cowon-j3-portable-media-player-32gb-white jds-labs-c421-headphone-amplifier shonyun-306-portable-amp tralucent-audio-t1-portable-amplifier akg-k3003
    • Replies: 3
    • Forum: Portable Headphone Amps
  21. OmsJtmz32

    Advice for portable amp around 200

    My source will be from iPhone 4.. or do u guys have a better source to reccomend me. I currently have a odac, so how do I connect the portable amp to the odac? As my odac only have a USB cable.
  22. JDS Labs c421 Headphone Amplifier

    JDS Labs c421 Headphone Amplifier

    Taken from item page: "Description: c421 is our fine new headphone amplifier, housed in a sleek aluminum enclosure. Audio is inherently analog, so we spent 18 months designing a 100% analog amp around features that matter: straightforward sound and functionality. Transparency The audio chain...
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