After burn-in, are you feel like me ??

[munkong]

Hi, all Please explain to me,

after burn in Go-Vibe for 75 Hours, and buy a new pocketdock, put jack in the line-out, not headphone out, with grado SR80, ipod photo 40 GB, and all song rip to AAC320kbps, opa2227

I listen for 2 hours, I don't see the different more than 3-5%, it not different between amp & un-amp, I try to listen again and again, rock jass pop to classic, listen with normal level

why ?? my ear is bad ??

but i think, my ear not bad than anyone
and Go-vibe is the great amp in this forum, it not bad amp
why improvement is very very less
who can tell with this case

I read from other thread, someone told low impedance headphone can get less benefit from amp, is it true ??

How to correct, swap to new op-amp AD8066 ???
or waiting for todd open up sale, and buy HF-1 from him

regards


PS my english bad, but my ear not bad...

sure

 

[fewtch]

Sonic differences are usually "dramatized" around here. A lot of ear training is involved, but definitely a little bit of plain old drama as well.
Quote:

Originally Posted by munkong Hi, all Please explain to me, after burn in Go-Vibe for 75 Hours, and buy a new pocketdock, put jack in the line-out, not headphone out, with grado SR80, ipod photo 40 GB, and all song rip to AAC320kbps, opa2227 I listen for 2 hours, I don't see the different more than 3-5%

At Head-Fi (and many 'audiophile' forums and magazines, etc.) 3-5% is a HUGE difference

.

Also, the Go-Vibe is an example of a "transparent" amp, due to its simple design and very few parts -- according to some, the Grado RA-1 is like this as well. In other words, it functions to make the signal louder, but doesn't add much sonic signature of its own (compared to complex amps with a large number of components). Amps that have little sonic signature are more subtle in the 'improvements' they make. Some audiophiles consider "straight wire with gain" to be the holy grail of amps, but not so much around here, for some reason.

 

[ken36]

I'm not sure I believe in break-in. I do it anyway. I'm just not sure I am a true believer. Sorry Nicola.

 

[ScubaSteve87]

SR-80's could need longer than 75 hours too. I have read stuff about Grado's still changing at 200 hours.

 

[cpw]

The Grados actually do pretty well unamped so you may not notice as big a difference as you might w/ a higher impedance can like Senn HD6X0 or AKG high z phones. Doesn't mean the Grado isn't benefiting from the amp. I bet if you listen for a week or so w/ only the amp, then take it away, you'll notice the difference more clearly.
CPW

 

[munkong]

Hi all,

my problem is, if it not different in amp or un-amp, why i pay for buy amp

I think, if it not different when use go-vibe, in other amp it is the same
less different in hearing

my grado use more than 500 hours, it success in burn-in sure

My ONe question is : why EQ can use when i jump in to line-out

in my opinion, if use line-out it bypass signal from intenal amp in ipod
but why EQ can adjust if I put cable in line-out ??? Is it not true bypass

by pass in my opinion, it cut pre-amp and power-amp in ipod

are you understand in my poor english

 

[Borat]

You are correct. The iPod does not have true line out. You can control the EQ still. It bypasses volume circuit not EQ circuit. I still think it sounds better than going through headphone out though.

 

[ScubaSteve87]

I used Bass boost on my Ipod EQ through the line out to my cmoy and then the shure's. The bass is still pretty controlled and tight. If I switch to the headphone out I notice much more distortion

 

[munkong]

[size=small]ipod line-out provide the same sound as the headphone out[/size]
with line-out it give you louder volume, you cannot control volume in the line-out, but you can adjust EQ in the line-out

I put SR80 in to the pocketdock (un-amp) it can not control volume, it fix the level, again i put SR80 in to the headphone out, control volume loud as the line-out, and compare in sound character, it can hear very very less in different

[size=small]Go-Vibe is not intened the sound[/size]

I mail to ask norm, and he say :

First of all, the go-vibe simply amplifies the signal from the source and
provides the proper drive to the heaphones. It is not intended to add or
subtract anything from the sound. You're probably hearing your headphones now, the way they really sound for the first time.

with this advise, I will try to burn-in with more hours
and will back to report again

regards

 

[munkong]

Quote:

Originally Posted by fewtch Sonic differences are usually "dramatized" around here. A lot of ear training is involved, but definitely a little bit of plain old drama as well. At Head-Fi (and many 'audiophile' forums and magazines, etc.) 3-5% is a HUGE difference . Also, the Go-Vibe is an example of a "transparent" amp, due to its simple design and very few parts -- according to some, the Grado RA-1 is like this as well. In other words, it functions to make the signal louder, but doesn't add much sonic signature of its own (compared to complex amps with a large number of components). Amps that have little sonic signature are more subtle in the 'improvements' they make. Some audiophiles consider "straight wire with gain" to be the holy grail of amps, but not so much around here, for some reason.

hi, you are correct

 

[irvin59]

I think you must look at what weakness in your setup you wanted the amp to address. For example if you just want an amp to make the sound louder anything from a boosteroo to the best amp you can think of would do the trick. If you want louder sound without distortion bye bye boosteroo. If you want increased bass, your amp may not be the right one. If you want increased soundstage your grados may be the problem. Many people say they have a narrow soundstage in any conditions. If you want a more dynamic sound you may not be able to get it as the grados are already very dynamic. If you want more detail and resolution the dac in your ipod may be the weak link and there is little, if anything, any amp can do about that. Also you may want to try encoding in apple lossless format as your ears may be too good for aac 320.
An amp is not a magic wand-it can only fix certain problems, and amplify others.

 

[some1x]

Are you using lossless compression?

Low bitrate MP3s will hold back the sound quality of your syste,.

 

[meat01]

Quote:

Are you using lossless compression?

Quote:

after burn in Go-Vibe for 75 Hours, and buy a new pocketdock, put jack in the line-out, not headphone out, with grado SR80, ipod photo 40 GB, and all song rip to AAC320kbps, opa2227

I agree with Fewtch and Norm. Amplifiers amplify the signal.

 

[CookieFactory]

AAC 320 is perfectly fine.

hydrogenaudio

 

[irvin59]

Maybe he's got very sensitive ears.