Just listened to some Fostex T50RPs today... WOW! - Page 626

I tried pad stacking, got nice separation too with the stock pads over the srh840, but I'm also looking forward toward trying the beyer velour pads.

 

I got slightly better soundstage by using a pair of JMoney Beyerdynamic earpads.  As far as I can tell, it didn't lose any bass from the Shure SRH840 pads so this is a nice discovery.  Super comfy as well.  I tried stuffing some foam under my Shure pads, but had a harder time sealing for some reason and lost a little bass.

I am thinking that I might be wanting more bass than these can provide.  My test track is the Ultimate Woofer Test by Techmaster PEB.  Not audiophile listening for sure, but I like to test bass extension and articulation with it.  My HD650's have a lovely rumble on that song and can hit all the frequencies, but I find the T50rp's to not have enough oomph, especially in the deepest bass regions.  For 95% of music, not noticeable and these are fantastic sounding.  But it would be awesome if they could hit just a little harder.

 

My current setup is with Jmoney Beyerpad, plasticine on baffles, stiff felt with holes punched into it on the back of the driver, acoustic foam and felt in cup, unrolled cotton balls in cup.  Visible baffle port is taped over, nothing done to the cup bass vent.  Moving towards the DBV 3 from BMF, although I don't think I will be doing anything more to enhance the treble as it is already a tiny bit much for my preferences.  I am going to keep experimenting to get more bass.  Never thought I was a basshead, but I guess I am.  I will be getting some LCD-2's in a week so will finally be able to really A/B the T50rp's against them.

Do you own the said E7 already?
If yes, that should suffice even if it may not bring out the full potential--something we don't really need on the go.
Otherwise the O2 is transportable.

The O2 is typically configured with rechargeable 9v batteries. I think they last between 6-8 hours on a charge. They can't be powered by USB though. And if you're already lugging a laptop, the 02 doesn't add much weight. What will you be using as your DAC?

I don't have a DAC or AMP as I am just getting into the headphones and never really needed one to drive my IEMs so I am open to pretty much anything.  Didn't know the O2 could run off of batteries, so that makes it more of a possibility, but would I be better off getting the Fiio E17?  I do most of my listening in the library or at my desk so while weight and size isn't a huge issue I obviously don't want to be sitting in a little study carrel with a massive amp.

Edited by micrors4 - 10/17/12 at 5:40pm

Sure, the E17 will work...
I don't have enough experience with the O2/ODAC to tell you which is better but the E17 has a easier form factor for portability and even with USB charging off it can operate as a DAC without using much power at all from the battery.

Does it 'bring out the T50RP's full potential'? I'd say nay but eh... what's 'best'/'full potential' anyway.
Many of the users in this thread use O2 though for semi-portable/transportable amp.

Would the DAC have a noticeable impact on the sound quality as I don't have much experience with them because I usually just drive my IEMs straight out of my Ipod Classic.

The O2 only has a line-in so, you would have the send the signal through a dac then into the line-in, otherwise you have to send it from your already amplified headphone jack.

Would the DAC have a noticeable impact versus just sending the line out of my ipod to a AMP?

I was assuming it was being used for a laptop for some reason. Out of an ipod, the line-out will work fine as the internal dac on the ipod would be fine.

I use both a laptop and an ipod depending on where I am which was why I was looking at potentially getting a fiio e7.

Not sure how much the DAC itself does but at least in my case the amp extends the highs and lows among other benefits.
The DAC will only be used when plugged to your PC. What you could try for your iPod is to get a LOD interface, which bypasses the iPod's amp but not its own DAC.
If anyone sees misinformation in my post, do correct.


On another note regarding leakage, electrical tape alone will not fully block sound from coming out via the vents, but helps. If you stack layers of something over it, that may help.

I don't mind if they leak a little, but I usually do most of my listening in a quiet library so I just don't want them to be as bad as fully open-back headphone, many others have there ibuds blaring so if it doesn't leak more then those I will be fine.

They won't; at least in my case they do not. And I did not layer my electrical tape.