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

    Earsonics SM3v2: Really crappy bass on iPod

    So I recently bought some SM3v2's according to some advice I had received on a thread I made and some research.   Everything seemed to be going well with them until I decided to try something.   I switched the EQ from "off" on my iPod classis to "Electronic" and all of the sudden it...
  2. EvanA

    Closed portables for wide variety of music

    Hi all,   I'm looking to get myself some new headphones.  These will be my first pair of dedicated, portable headphones, so they need to be closed.  Currently I am using the CX 300-II IEM and they're showing their age.  I listen to a wide variety of music such as house, electronic...
  3. ostewart

    Review: Alclair reference monitor CIEM

    Alclair Reference Monitor review:   I recently decided to enter the world of custom IEM's, and decided to go with Alclair because of Average Joes multi custom IEM review, and the price. I soon found out that they have excellent customer support and was impressed with the way they treat their...
  4. Vendetta

    Detailed + Forgiving + non-fatiguing?

    Detailed + Forgiving + nonfatiguing?    Is this a real combination?   I liked the silky smooth mids and forgiveness of my Re262, but the detail of my HF5.   Unamped or with a JDS Labs c421, what are my options under $200?   Thanks
  5. adammax

    Increasing bass for W4R

    Hi guys,   Just got a pair of W4R. However, coming from ATH M50, I find the bass lacking in W4R. Is there any ways I can increase the bass? I'm using star tip. The foam tip seems to increase the bass, but for comfort, I'll prefer the star tip, Any advice?
  6. deftonez

    Upgrade Rig

    Hi, Im currently running on an iPod classic paired with a C421 and westone um3x. I was thinking of getting a high def DAP or getting a set of CIEMs. The thing is I have around 20% of songs bought from iTunes, would i be able to still play that on a DAP like an iBasso DX50 or something from...
  7. omeletpants

    Fio Amps that supply real power

    I have a Fiio Eo2 that barely supplies any extra volume. Willing to step up to a better amp. Which will supplu significant power/volume?
  8. lwells

    Replaced my TF10's with W4R's and I 'might' not be in love :shrug:

    Hello All,   My TF10's with a lune cable were destroyed a year ago.  I finally got around to replacing them.  I decided on the Westone 4R's.  Unfortunately I can only compare them to my memory of the TF10's.  I remember the TF10's being much more engaging and detailed.  Is there anything I can...
  9. Mustvid

    JDS Labs C421

    1 year old JDS C421 Headphone Amplifier (Black body Silver face). I'm the original owner and I purchased this amp July 24, 2012. This amp has the AD8620 opamp. Included with the amp is Fiio cable. Check my Ebay and Audiogon ratings username mustvid (100%).   Shippig to CONUS only, shipping...
  10. bixby

    JDS Labs C421 w/ AD 8620 Chip SOLD

    SOLD   Well cared for C421 with Analog Devices 8620 op amp installed.  Black with silver end pieces.  Slight mark on the bottom of the case that is just visible in the photos.  Also includes USB charging cable.   $149 firm includes priority shipping in the CONUS and all paypal fees.  ...
  11. MS1605

    JDS Labs c421

    looking for one. Lets see what you got.
  12. dimmockg

    Portable Amp Wanted - either a JDS C421 or JDS C5

    As per the request in the title, I am after a JDS C421 - either op-amp will suffice, must be in superb cosmetic condition and naturally fully working - would also prefer black finish   Or...   (Slim Chance) JDS C5 - in slate finish preferably - again, must be in superb cosmetic condition...
  13. woodcans

    JDS Labs C421

    Very good condition C421 amp in black. Second owner. Minimal signs of usage only under close inspection. This amp has the AD 8620 OpAmp and ferrite core upgrade by JDS Labs.  Add 3% for paypal and $10 for shipping.
  14. dimmockg

    WTB: slim portable amp, something like Jds c5, leckerton uha4, headstage, picco etc etc

    As per the title really, I'm after a portable headphone amp, something like: • leckerton audio uha4 • jds labs c5 - may consider a c421 at the right price : fiio e12 (possibly) • headstage arrow : picc slim : alo continental • anything else 'slim and slender' and rechargeable (preferred)...
  15. Cassadian

    JDS Labs C421 w/ Silver Wire LOD **PRICE DROP**

    Selling a like new JDS Labs C421 that comes with a braided silver wire LOD, has less than 5 hours on it.   $210 shipped, preferred method of payment is Paypal Gift or you pay the fees.   Have a case of upgradeitis and am moving on.     AD8620 OPAMP   BUMP PRICE DROP!
  16. B[van]

    FSOT: JDS Labs C421 (AD8620) Wants: HM602 / HM601

    Listing reopened and edited on 22 June 2012, +8 GMT     ALO RX MK ii   - $220 USD SOLD   Got this amp from Skoog5600 from here http://www.head-fi.org/t/602231/old-alo-rx-mk-ii-amp-not-working-but-repairable previously and sent it back to ALO for a fix.    Got it back slightly more...
  17. imackler

    New Westone 4 Unopened- Authorized Dealers - Two Year Warranty (Add JDS LABS C421 Amp for $135)

    I purchased this on the spur of the moment because it was a good deal but I think I'm going to have to let it go.   The W4 is sealed and unopened, comes from an authorized dealer and can be extended to a two year warranty.   The JDS Labs C421 comes with the AD8620 opamp.     W4...
  18. alphaphoenix

    Last sale: JDS Labs C421 (AD8620) amp, iPod Mini 2nd Gen 64GB CF, Klipsh X10 bundle

    This is my last sale on head-fi and I want to go out with a bang.  I'm offering the following bundle only (will not part).  Everything is in excellent condition and works 100%.  It offers a good opportunity at a good price (it would cost much more buying separately) to jump into portable-fi with...
  19. alphaphoenix

    Last sale: JDS Labs C421 (AD8620) amp, iPod Mini 2nd Gen 64GB CF, Klipsh X10 bundle

    This is my last sale on head-fi and I want to go out with a bang.  I'm offering the following bundle only (will not part).  Everything is in excellent condition and works 100%.  It offers a good opportunity at a good price (it would cost much more buying separately) to jump into portable-fi with...
  20. SteveSatch

    JDS Labs C421

    Shipped free.  Great shape.  I ended up with two of these that both have the AD8620 amp.  I am selling the one I don't use.  I bought this from JDS Labs directly and not from another owner.  Sorry for the crummy cell phone pics.  Paypal gift or add fees.
  21. ostewart

    FS/FT: JDS Labs C421 (AD8620) Black edition (trade: Fostex T50rp, Nexus 7, tube amp or similar)

    Now selling my trusty portable amp, been by my side for nearly a year, very well looked after comes with charging cable as standard. Selling because I have the new C5.   In excellent condition, no scratches or marks.   Price includes shipping in the EU, worldwide add €5   You pay...
  22. burrrcub

    JDS Labs C421 w/AD8620

    Preordered the C5 so I'm selling the C421.  This was purchased on November 18th, 2012 and I'm the first owner.  Excellent condition, no scratches or dings.  Comes with USB cable and instructions, no rubber feet.  If you own a Nexus 4, I can leave the velcro and give you a ringke slim case (see...
  23. Physther

    SOLD: JDS LABS C421 AD8620 w/FIIO L9 & Mini USB charging cable

    Once again, curiosity killed the cat and I HAD to check out this amp (because of the great products that come out of JDS labs) and have been enjoying it EXTENSIVELY for the past 3 days since I've received it using my Chris_Himself silver recabled Denon D2000s.    Unfortunately, from a...
  24. willmax

    WTB:JDS Labs C421 amp or trade for my O2 amp + CA$H

    Looking to buy a JDS Labs C421 amp in good 2nd hand condition, alternatively willing to trade it for my JDS Labs O2 amp plus cash.   I'm located in Adelaide, Australia. Please PM me with any questions or details regarding the above.   Cheers
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