Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › FiiO Mont Blanc/E12 portable headphone amp, 880mW, slim design, full metal case. Bass boost and Cross feed!
New Posts  All Forums:Forum Nav:

FiiO Mont Blanc/E12 portable headphone amp, 880mW, slim design, full metal case. Bass boost and... - Page 47

post #691 of 3263
Quote:
Originally Posted by ClieOS View Post

 

Just so we be clear: That is the correct way to use ANY amp. Always plug in the headphone after you turn the amp on, not before.

Well that is if you are testing with stuff you don't know.

 

For something like the E12 or other units that you know don't have a loud transient pop on turn on with headphones that you are familiar with and know won't have trouble with. I would say you wouldn't need to always do it.

 

On another note

I have been marathoning Ghost in the Shell. I LOVE Tachikoma!!! biggrin.gif. I don't really care for anyone else. But Tachikoma is great. Especially near the end of Season 1!!! beerchug.gif Great assisting character.

post #692 of 3263
Quote:
Originally Posted by bowei006 View Post

Well that is if you are testing with stuff you don't know.

 

No, that is when you are doing it in the correct way. Just because you want to skip a step because you believe it is safe to do so doesn't make it a correct practise when using an amp, or any source in the matter. Better to keep a good habit then regret latter. Another good habit to have is to always learn to turn the volume knob down to minimum before plugging in a headphone and after removing the headphone. It is the little trivial things that will save you in the long run.

post #693 of 3263
Quote:
Originally Posted by ClieOS View Post

 

No, that is when you are doing it in the correct way. Just because you want to skip a step because you believe it is safe to do so doesn't make it a correct practise when using an amp, or any source in the matter. Better to keep a good habit then regret latter. Another good habit to have is to always learn to turn the volume knob down to minimum before plugging in a headphone and after removing the headphone. It is the little trivial things that will save you in the long run.

I'll keep that in mind when I test out new stuff. Thanks.

 

To be honest, I only posted to get a comment out of you/conversation on the show as I am enjoying it right now. But this is the E12 section so I get it. tongue.gif

post #694 of 3263
Quote:
Originally Posted by Apo0th3karY View Post

 

 

*ding ding ding*

 

I think we have an audiophile winner here.

 

How about the effect on sound signature? Does it add a warm/bright tilt? Does it bring mids forward at all? Does it box in the sound stage compared to unamped? Or does it improve upon the soundstage? 

 

As for the volume pot being stiff, I like the sounds of that, micro adjustments will be easier. Has anyone tested the efficacy of LOD vs 3.5-3.5 interconnect? How's battery life; does the sound degrade after so long?


I don't think it alters the sound signature that much in terms of warm/bright, but everything does sound more alive. The instruments sound a lot closer and more to the front, but I'm not sure how much of that is the amp's soundstage and how much is the drivers being properly driven.

 

I haven't run out of batteries yet, but it did charge very fast when I got it. I haven't heard this detail mentioned, but apparently the amp has two charging rates depending on how much power it can get through the USB. It signals this by blinking the battery light slower or faster. So if anyone has an E12 that's taking a long time to charge, it might be on the slow rate and need a better USB port to go faster. And yes, you can use it while it charges, unlike the E11.

post #695 of 3263
Quote:
Originally Posted by ClieOS View Post

Just so we be clear: That is the correct way to use ANY amp. Always plug in the headphone after you turn the amp on, not before.

When I had my Little Dot tube amp, I never did that. It was plug headphones in first, and generally left them in. Always had volume on minimum to start with. I assume this applies to solid state amps then?
post #696 of 3263

I think this thread needs more pictures....

 

 

 

 

 

 

post #697 of 3263
I can't see any more pictures biggrin.gif
post #698 of 3263
Quote:
Originally Posted by gavinfabl View Post


When I had my Little Dot tube amp, I never did that. It was plug headphones in first, and generally left them in. Always had volume on minimum to start with. I assume this applies to solid state amps then?

 

No, you are just being lucky so far. Tube amps is generally much more noisy than solid state as they require warm up. They also tend to have more voltage drift during start up as well, as more prone to failure in general. Even though the odds flavour you, it is still Russian roulette in the long run and you just have to wish for no problem during start up as a big DC voltage spike might just burn out whatever you are connecting o the amp.

post #699 of 3263
Quote:
Originally Posted by Tsujigiri View Post

I think this thread needs more pictures....

 

 

 

 

 

 

 

 

 

Oh man, that zune HD is really sexy, I also own one just like yours and find the HP kinda weak, my Alessandro MS1i are well driven at 14 without amp and with my handmade cmoy make that just 5 or 6. How does that fiiio is working for you?

post #700 of 3263
Quote:
Originally Posted by gavinfabl View Post

When I had my Little Dot tube amp, I never did that. It was plug headphones in first, and generally left them in. Always had volume on minimum to start with. I assume this applies to solid state amps then?

As ClieOS said, tube amps generally are MORE dangerous and less predictable than solid state amps! That first moment the amp turns on, the pop is like a SS amp on high gain with the volume turned very high going POP! for a moment. Bad for your hearing, and as the other have said, could "pop" out your headphones too. Though SS amps generally are more predictable, that moment where everything becomes active at once when you turn it on is still dangerous.

Many people don't know that, so the delay Feiao mentioned that was built-in to the E12 is a nice safety feature that should help 99% of the time... but still it's better to be safe than sorry, and just plug in your headphones after turning your amp on.

ClieOS' avatar is pretty cool, I like the choice for it's symbolism: the machine with a soul. You can imagine how that relates to audio gear and music wink.gif
I personally thought the TV show was "Ghost in the Shell: Lite" compared to the first movie. The little blue guys don't appear in the movie, but the concepts are more mature and characters IMO more interesting. I didn't like the second movie too much though, I thought there were too many disjointed and overly complex scenes, as if the director was grasping to express a challenging idea but didn't know how to express it clearly. The first Ghost in the Shell, Akira, Neon Genesis Evangalion, Princess Mononoke, Spirited Away, and a few others were/are my favorite Animes before I moved on to other hobbies.

Boweii, under what conditions do you hear those whine noises? I'll see if I can reproduce them with my gear, but I suspect you are just hearing amplified background noise from other components before the Mont Blanc. To be honest I haven't even needed to try high gain yet biggrin.gif

Apothecary,
I could not detect a difference between bass boost on or off, unless a really low bass note hit, and then the effect was just a bit more presence for that bass note. And I think that's perfect, I feel like the boost is "safe" to leave on with almost any song. It doesn't change vocals or acoustic guitar, and even with bass-heavy dubstep and trip-hop tracks the bass doesn't clip levels and distort. I would like to watch the movie Inception with the bass boost on, that'll be fun smily_headphones1.gif
post #701 of 3263
Quote:
Originally Posted by Tsujigiri View Post

I guess the Mont Blanc pens are just laying there by coincidence ;-)

post #702 of 3263

I have no issue with the recessed crosstalk and gain.  I actually prefer it as it is two less switches that could be accidentally adjusted.  With a portable amp such as this, it is easy to move the wrong switch.  IMO, crosstalk and gain are more personal preference and headphone dependent, so they wouldn't need to be changed often which is probably the reason they are recessed.  I like the looks and overall design, especially for the amount of power the E12 puts out.  My Vamp is only 150 mw x 2 and I sometimes run near full power with my M-100.  I would need the E12 if I purchase more power-hungry headphones.
 

post #703 of 3263
Quote:
Originally Posted by feiao View Post


we have installed a tiny relay inside the Mont Blanc, so the headphone will not connected to the amp output till the power on noise is disappear. the physical noise is the sound when the relay is connect. also the relay will disconnect when there are any DC output or over current output so it can protect your expensive headphone.

I don't remmember any other portable amps have such design but it is very common in speaker amplifier. also we put the same tiny relay in our X3.

I thought it looked like a relay from the picks. Is this because there's no output coupling caps? I assume that you're still using a charge pump so that you don't need to worry about offset drift. Has the supply been refined as well?

post #704 of 3263
Thread Starter 
Quote:
Originally Posted by goodvibes View Post

I thought it looked like a relay from the picks. Is this because there's no output coupling caps? I assume that you're still using a charge pump so that you don't need to worry about offset drift. Has the supply been refined as well?

 

Not , the Relay is designed to avoid " Pop" sound when turn on/off the amp and other situation when we need to isolate the output of the amp with headphone.

 

the Mont Blanc used +/- 11V power supply not any charge pump and output capacitor. 

post #705 of 3263
Quote:
Originally Posted by Evshrug View Post

Boweii, under what conditions do you hear those whine noises? I'll see if I can reproduce them with my gear, but I suspect you are just hearing amplified background noise from other components before the Mont Blanc. To be honest I haven't even needed to try high gain yet

 

Those are voltage step up noise from the power switching circuit. To get the full benefit from the opamp, E12 must runs on very high voltage with a true dual-supply. The original idea was the AAA Li-ion batteries pack that give +/-14V that needed to be charge separately, but it was discarded in flavour of the current +/-11V batteries setup (there was a vote / opinion gathering of some sort if any of you remember) - lower in voltage, but still high enough to do the job, and can be charged by USB. However, to get the 5V USB charging to work on a +/-11V system, you will need a step up circuit and like any circuit of this kind, they tend to be noisy. In exchange however, we are spared from carrying a dedicated charger or the inability to use when charging. I'll say it is a compromise for the better.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Portable Headphone Amps
Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › FiiO Mont Blanc/E12 portable headphone amp, 880mW, slim design, full metal case. Bass boost and Cross feed!