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JDS Labs C5/C5D (pg96) portable amp/amp+DAC - Page 81

post #1201 of 3335
Quote:
Originally Posted by imackler View Post

Quote:
Originally Posted by miceblue View Post

Well, you can buy an AVR programmer, solder 3x2 header pins to the C5's PCB, and install it via Arduino. :p

No way! Is that the only way?! 

Straight from the blog entry:

http://blog.jdslabs.com/?p=464

Quote:
In pursuit of retiring analog potentiometers in DIY HiFi, we’re releasing C5′s firmware under the CC BY-SA 3.0 license. Note that a 6-pin header and ISP programmer are required to write to C5.

 

 

Ah this is some interesting firmware code. :D

I might actually like this more than my current "slow volume change" mode which changes volume 1 step every 110 ms instead of the default 55.


Edited by miceblue - 7/31/13 at 6:45pm
post #1202 of 3335
Quote:
Originally Posted by miceblue View Post

Straight from the blog entry:

http://blog.jdslabs.com/?p=464

 

 

Ah this is some interesting firmware code. :D

I might actually like this more than my current "slow volume change" mode which changes volume 1 step every 110 ms instead of the default 55.

 

We can perform the update for the cost of shipping ($3.30 in USA, $12 international). Simply ship to the address on our contact page and include your original order number on the box.

 

For those who prefer the DIY route:

Soldering can be avoided by attaching a pogo pin adapter to an ISP programmer. I believe miceblue posted a tutorial in the reviews section. We can post a guide if there's interest.

Reply
post #1203 of 3335

lol it's been a long time since I've heard about Arduino.  It brings back memories of my electronics classes.  Is that thing still alive? 

post #1204 of 3335
Quote:
Originally Posted by jseaber View Post

 

We can perform the update for the cost of shipping ($3.30 in USA, $12 international). Simply ship to the address on our contact page and include your original order number on the box.

 

For those who prefer the DIY route:

Soldering can be avoided by attaching a pogo pin adapter to an ISP programmer. I believe miceblue posted a tutorial in the reviews section. We can post a guide if there's interest.

 

Thanks, Jon.  That's very reasonable.

post #1205 of 3335
Quote:
Originally Posted by ThurstonX View Post

 

Thanks, Jon.  That's very reasonable.

Indeed, I've always enjoyed dealing with JDS Labs. Always great prices on their part

 

Question Answered in under 4 hours, wonderful Customer Service from JDS Labs as always

 

So I'm wondering... wheather I want this or the Fiio E12, the LME 4xxx op amps in the E12 capture my attention, seeing as I prefer the LME 4x series over any Op 2x I've heard, I use and Lme 49990 in my Matrix M Stage [which was a  Op 2134, and I belive the op 2227 was in the cMoy bb wasn't it] Ethier way I enjoyed the OP 2x with lean cans, but hated them with Darker Warmer cans, the Lme However has proven to be very nice with both sets

 

Non the less, I'm soon to purchase [hopefully] a Fiio X3 and a pair of Fostex T50 Modded Mad Dogs, I had the Mad Dogs b4 and sadly out of my E11 and my cMoy [Sourced from my Hm 601] they where horribly warm [proably the Hm 601's fault tbh] Non the less even at home with my Odac, the mad dogs where just to warm. Out of the oDac cMoy chain and my Stock M Stage at the time

 

So I'm once again going to revist the mad dogs, and I'm looking for a Brighter Airy Amp, as opposed to the warmer ones I've had in the past. I Jds Labs, the make a top notch product. But I'm wondering if it's as detailed and clean as the E12 [it seems the bass boost is better 6.0 at 80 compared to 4.2 at 100]

 

Any thoughts you guys <3 [seeing as the e12 is cheaper, I'd most likely buy it new, and get the C5 used] 


Edited by Mshenay - 8/2/13 at 9:31am
post #1206 of 3335
C5 is definitely more airy, detailed, and transparent next to the E12. E12 sounds congested but deep, warm mids but bright, and I find the bass boost to intrude into the mids more so than that of the C5. The E12 has more of a punchy bass boost whereas the C5 is deep and chest-punching
post #1207 of 3335
Quote:
Originally Posted by miceblue View Post

C5 is definitely more airy, detailed, and transparent next to the E12. E12 sounds congested but deep, warm mids but bright, and I find the bass boost to intrude into the mids more so than that of the C5. The E12 has more of a punchy bass boost whereas the C5 is deep and chest-punching

Yea that's the feeling I get from looking at the different Bass Boosts, still though OP2227 <.<

 

Still it's JDS labs, If I had an issue I know they'd help me faster and better than Fiio ever would, 

 

I'll proably lean towards the JDS as well, seeing as it's also smaller than the E12 [I think so anyways looking at the dimesions] 

post #1208 of 3335

Yeah the E12 is larger and heavier than an iPhone 4S. I don't carry it around in my pocket because it's too big for me. I also ride on the bus to get to places and I've found that the E12 picks up quite a bit of RFI noise...and it gets excruciatingly loud in dead-zones; I have to unplug everything and take the headphones off my head until I pass the dead-zone.

post #1209 of 3335
Quote:
Originally Posted by miceblue View Post

Yeah the E12 is larger and heavier than an iPhone 4S. I don't carry it around in my pocket because it's too big for me. I also ride on the bus to get to places and I've found that the E12 picks up quite a bit of RFI noise...and it gets excruciatingly loud in dead-zones; I have to unplug everything and take the headphones off my head until I pass the dead-zone.

So I've ditched the Mad Dogs once again, I keep hearing how dark they are and I don't want to go back to that [although those Alpha Pads where the sexiest I'd ever worn]

 

How well would the C5 do with a K550 sourced LINE out from a Hifiman Hm 601... I want as close to neutral I can get, with a Bass boost when I need it. and ofc I want that bass to stay tight.

 

I will say that me old E11 +the Hm 601 was suprsingly Tight on my Dt 990s :O I was impressed at how TIGHT the bass was on the Hm 601 [imo with limited DAP experince] and I liked the dt 880 with my cMoy and my Hifiman, which leads me to belive that the C5 and Hifiman should work even better for a K550 [assuming the k550 has a simmlar neutral sound like the dt 880]

 

Just wondering if I want, the Sub or Mid bass boost... the cMoy did poorly with the Dt 990, where as the E11 did wonderfully... so how will the C5 do with both cans I wonder. Well how does a C5 do with keeping an un bass boosted k550 neutral, and for those who own the C5. How well does it do with boosting bass heavy cans like the Dt 990 [which... really enjoys a Mid bass boost around 100hrz,] although it't not bad with an 80hrz boost... 

 

Still any one listen to this amp for a neutral can, and a bass heavy one xD [If I'm going to buy the more expensive C5 wanna make sure it will work with both portable cans] 


Edited by Mshenay - 8/3/13 at 12:35pm
post #1210 of 3335

Has anyone paired the C5 with the AKG K240 MKII? I'm intrigued by these (looking for semi-open), but the C5 is the unchangeable variable in the equation.

 

Cheers.

beerchug.gif

 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

Well, in a few days I'll be posting a review of how the C5 pairs with the AKG Q701s  atsmile.gif


Edited by ThurstonX - 8/5/13 at 4:08pm
post #1211 of 3335
Quote:
Originally Posted by miceblue View Post

I posted my impressions in the FiiO E12 thread, but I definitely think the C5 is worth the price difference.

 

Comparisons to C5:

In short, I'd say the C5 is worth the price difference between the E12 ($60 USD).

  • More pocket-friendly interface
  • More portable form-factor
  • More space for jacks on the front-plate
  • Easier-to-use volume controls
  • Deeper, larger "theater" bass boost [perhaps pre-mass-release E12 would have been like this]
  • Larger soundstage with better instrument separation
  • Closer in sound to my reference amp, Objective 2
  • Clearer midrange
  • More detail in the treble
  • More fatiguing during long listening sessions
  • No channel imbalance
  • No noise on high-gain mode

 

Thanks for the review. I realize this is an old post, but I'm just now comparing the E12 with the C5. I'm leaning toward the C5. You give a lot of complements, but your comment that the C5 is "more fatiguing" has me worried. Would you please elaborate or did you mean "less" fatiguing than the E12?

post #1212 of 3335

You know, i never understood the whole 'fatigue' thing.  I love treble as much as I do bass.  I never get 'fatigued' from hearing high highs.  None of my friends do either, they're like 'fatigue? get outta town!'  If I am fatigued from an amp, I wouldn't know it.

post #1213 of 3335
Quote:
Originally Posted by chengsta View Post

You know, i never understood the whole 'fatigue' thing.  I love treble as much as I do bass.  I never get 'fatigued' from hearing high highs.  None of my friends do either, they're like 'fatigue? get outta town!'  If I am fatigued from an amp, I wouldn't know it.

 

It may be a personal issue. I can imagine if you enjoy listening, _except_ that the highs are a little harsh, I can understand fatigue. It just doesn't seem to mesh with everything else positive that's said about the C5. Admittedly I didn't read through this entire thread (it took months to write, it would take months to read...) but I don't think anyone described it as harsh. I wonder if miceblue may have meant to refer to the E12 as fatiguing.

post #1214 of 3335

Imo, neither are fatiguing amps! The E12 is a darker amp w/ less treble than the C5 but the C5 is really smooth and neutral. The C5 does have more detail than the E12, but I don't think its presented in an unpleasant, demanding way. Personally, I'd be more likely to get tired of the laid back richness of the E12 than the neutral C5. 


Edited by imackler - 8/5/13 at 4:33pm
post #1215 of 3335

I would say I'm fatigued by harsh treble pretty easily, but then again, flat even treble, even when boosted doesn't bother me.  It's more about how high peaks are in certain treble areas.  You may not notice the peak being too loud as the overall sound isn't loud, but then over time it gets irritating to your brain and ears.

 

As for the C5, I find it the opposite of fatiguing.  In fact, most devices I use would probably be described as fatiguing in comparison.  Even the really high quality devices.  Not that they are literally fatiguing, but when using the C5, the sound is "opened up" a bit and it makes things easier to listen to for me personally.

 

I think what is more likely for most people is that the low impedance and reference flat frequency response is revealing the actual sonic signature of their phones.  Instead of having a "warm" (recessed treble) upper end and slightly boosted bass, the whole spectrum is instead ruler flat.  So the treble in comparison to their non-flat amp would seem higher and the bass lower.  That would easily result in a fatiguing sound on a lot of earphones that aren't flat to begin with. :-o

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