I know that the O2 is very large and is considered transportable than portable.    However I want to know if the O2 performs vastly better or just about the same but with more power than the C5 amp   And are either of the batteries user replaceable?    How long does the O2s battery last? 

Hello. I have ordered iPod Classic and Beyerdynamic DT770 and is on the way, I'm looking for a portable amplifier to pair with them. I'm interested in ALO audio The National & JDS Labs C5. I would like to know which one is better if you had tired or have both. Thanks.

Hi! Does anyone tried this combination together? Just need some inputs if this will be a good idea.. Hope someone could help me . Thanks!

WTB: JDS C5 amp

Hello all! I'm in the market for a portable headphone amp, and I've done a bit of research and am trying to decide between the JDS c5 and the ALO the National. I'm going to be using this thru my iPod classic 160gb and some NAD hp50s (ordered and on the way). I'm back and forth on which I should...

Micro USB (male) to Mini USB (male)   I need this to connect my Galaxy S4 to my JDS Labs C5D dac/amp.  Where can I get a good one?

Can I use this JDS Labs C5 Headphone Amplifier with Fiio E18 for my Galaxy s4 ?

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...

I just ordered a pair of Mad Dogs after trying them out yesterday and now I'm looking for a portable amp to go with them! I mainly listen to my iPhone/laptop as a source on the train or at my school library so portability is important. I'm looking at the $150 range but I could stretch it a...

Just heard about this on Reddit and didn't see a thread here. I've been considering getting a DAC and an amp to use with my iPhone 5 and this looks perfect for the price ($249)   I emailed Jason from JDS and he says it DOES work with iPhone 5 (and other devices obviously), you do need a...

I've been reading this section of the forum with great interest and want to buy my first portable amp. I had been considering the C&C BH or F1 but would also consider spending much more to get a really good amp that I'd hopefully never feel the need to upgrade from and that would save me money...

Hi, i need some headphones or earphones for the price listed in the post title(about $150 - $220).   I mostly listen to music from the 80's such as Paul Simon and Nanci Griffith. i am driving it form my HTC one x and don't want an amp. they need to be portable to an extent but i don't really...

I recently got a Shure SE535 (Special Edition) when I was in Hong Kong. It's my first truly high-end audio device. Before I had a Sennheiser HD 595.   The problem that I have with these earphones is that I can hear a very noticeable and annoying hiss when I connect them directly to an iPod...

 First let me start out by saying that I know that the UH-4 is a amp/dac combo. That said, I don't know enough about how to read the specs of each unit to make an informed decision. Looking at the summary's  they both have digital volume control, bass boost ( C5 +6.5db@ 80 Hz) ( UH-4 2x gain...

INFO: http://www.jdslabs.com/products/70/c5-headphone-amplifier/ http://www.jdslabs.com/products/84/c5d-amplifier-dac/         JDS Labs C5 Review:   I would like to thank John for sending me this engineering sample of the C5 for me to review. I will write as honest review as possible...

I was at an AV expo on the weekend, and I found this:           Unfortunately I didn't get to listen to it, but I'm pretty keen to give it a whirl within the next few weeks.   Felt decent in the hand, the pot turned well, didn't feel "cheap", and my little camera phone didn't...

As the title suggests, I'm looking for a portable amp that has the same sound technicalities (or better) than the O2 amp.   I know the O2 officially is portable, but I'm looking for an amp to stack my DX50 on.  The JDS C5 forms a very nice stack with the DX50, but I'm not convinced about its...

I am wondering how much power the alpha dogs really need. What are your opinions on a JDS Labs ODAC and C5 rig?  My source would be my phone which is a HTC One. Any better options? Cheers! 

I'm looking to make a rig for 2 purposes   1.  for use with my 300 watt stereo system's output after being input through my mbpro.  (this stereo system is 13yrs old; nothing special)   2. for use with my iphone 4s/ipods   I have Urbanears Zinken headphones that are new.   I am looking to...

I know that's a common question, but with a maximum of 300€ what's the best?

hi, all you lovely people out there...   I'm stuck in a dilemma here which is that i cant decide on which portable amplifier to buy. I currently own a pair of custom 1964 quads and a pair of denon d2000's...   love the sound of both these earphones...just want an amp to pair with them  ...

Spider Surround Pro headphone amp/dolby surround decoder review Firstly i would like to thank Spider for sending me this amp to review, I will write as honest a review possible. This amp received over 50hrs of burn in, no changes were noted. Gear Used: IPod Classic 160gb (rockboxed) > Standard...

Can i use Lg optimus g pro as my main source ??? portable source i mean with flac files??? or should i need to add and amp??? im going to use CIEM and V-moda m100 with Fiio e17 or JDSlabs C5???

whats up headfi? ive been wanting to ask this. im going on a trip soon and i plan on taking my Leckerton 6smk2 and jds labs c5 but im concerned with keeping these things safe and scratch free. id like to know what i can use to store them in.

I currently have a JDS Labs C5 and ODAC combo. The amp & a Sansa Clip+ have been serving me very well on my travels. Now that I'm back in the office (a craptacular Dell laptop docking station setup), I'm moving back to my ODAC setup on Windows + Foobar 2000.   When I was setting things up the...