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Cypher Labs Theorem 720 - Page 8

post #106 of 322
Quote:
Originally Posted by shigzeo View Post
 

I'm sorry, I was vague. I meant that the noise has no peaks or troughs; as long as your batteries are charged, it is a constant volume that doesn't change on cable wiggles or the volume of the music played from the source. It is exactly the sort of noise that you want- if you have to have it. My Walkmans and AMP3Pro not to mention one or two other amps, have noise that modulates even when you are not touching the chassis or twiddling the volume pot. Those non-neutral noise signatures are annoying.

Got it.  I have mild tinnitus, and you basically described what I hear in near or total silence.  The slightest sound overrides it and it is not noticeable.

post #107 of 322

My Theorem should be here tomorrow, would there be any benefits to purchase a balanced cable for my westone 4r?

post #108 of 322
Quote:
Originally Posted by Poimandres View Post

My Theorem should be here tomorrow, would there be any benefits to purchase a balanced cable for my westone 4r?

Yes With balance you can get more detail, wider soundstage and Fuller sound than single ended
IMO
post #109 of 322

There are some provisos to the above statement, but generally balanced improves signals. Balanced armature drivers aren't designed like dynamic drivers to accept different polarities necessary for wiring for balanced input, and the overall frequency can be distorted quite a bit from the original manufacturer-intended sound. Today, most BA earphones are not designed from the ground up to accept balanced signals and therefore will sound far different to their intended sound. You may like that but it is far more likely that the earphone will not perform 'better' as will a dynamic driver wired for balanced signals. It will sound different and you may like it. If you can check, check before buying.

 

The Theorem is a wonderful amp for both singe and balanced; it's your output device (earphone or headphone) that will determine if the signal improves or merely sounds different.

post #110 of 322
Quote:
Originally Posted by shigzeo View Post
 

There are some provisos to the above statement, but generally balanced improves signals. Balanced armature drivers aren't designed like dynamic drivers to accept different polarities necessary for wiring for balanced input, and the overall frequency can be distorted quite a bit from the original manufacturer-intended sound. Today, most BA earphones are not designed from the ground up to accept balanced signals and therefore will sound far different to their intended sound. You may like that but it is far more likely that the earphone will not perform 'better' as will a dynamic driver wired for balanced signals. It will sound different and you may like it. If you can check, check before buying.

 

The Theorem is a wonderful amp for both singe and balanced; it's your output device (earphone or headphone) that will determine if the signal improves or merely sounds different.

Hi Shigzeo,

 

Firstly, thanks for explaining on the balance thingy with iems. I heard some folks mention that you will get better result using balanced cable with headphones than with iems. What is your opinion on this? Thanks in advance for your input, if any.

post #111 of 322
Quote:
Originally Posted by AlanYWM View Post
 

Hi Shigzeo,

 

Firstly, thanks for explaining on the balance thingy with iems. I heard some folks mention that you will get better result using balanced cable with headphones than with iems. What is your opinion on this? Thanks in advance for your input, if any.

 

I think he just did, BA drivers being what's in most iem's.  Right?

post #112 of 322

I just got home to find that my wife had already opened my usps package from TTVJ, needless to say she wasn't happy when she discovered the bill. 

 

That aside I am very impressed that the package is sealed, every other amp that I have purchased has not been sealed, it is also of high tensile strength and took some effort to remove.  The box slides out and I expected to see the Theorem nestled in some sort of foam to absorb shock (I am sure that USPS/FedEx/UPS do not care for the package the way that they should), although prior to opening the packaging I could feel it sliding around so I knew that this was not the case.

 

This aside every aspect of the Theorem oozes quality it easily surpasses any of the previous amps that I have owned.  It is currently charging and I am having a hard time waiting for the charge to complete. 

 

My Theorem actually came with the power switch on (no led so the battery was depleted) and I turned it off before charging, do all Theorems come this way?

post #113 of 322
Quote:
Originally Posted by fiascogarcia View Post
 

 

I think he just did, BA drivers being what's in most iem's.  Right?

 

I understand the part about BA and iem. But does that naturally mean headphones will benefit from balanced?

 

 

Quote:
Originally Posted by Poimandres View Post
 

 

My Theorem actually came with the power switch on (no led so the battery was depleted) and I turned it off before charging, do all Theorems come this way?

I would be surprised if that is so. I think it is usually switched off. Most amps I have encountered out of the box have at least 1/3 power left in them. I could be wrong with the Theorem.

post #114 of 322
Quote:
Originally Posted by Poimandres View Post

 

My Theorem actually came with the power switch on (no led so the battery was depleted) and I turned it off before charging, do all Theorems come this way?

 

As long as still in plastic wrapped, it should be fine. Mine came with power off.

post #115 of 322
Hmmm it makes me wonder...everything was sealed externally and the theorem itself was sealed. Anyone else have their theorem come with the switch on?
post #116 of 322
I wonder if this will cause any issues to the battery or anything else. My serial number is also low 280 I believe.
post #117 of 322
It is certainly the best combo unit I have heard to date, however I am not sure if I will be able to get past the hiss. It reminds of low level analog hiss from a cassette or 8 track, not really as bad as from a vinyl imo. The hiss isnt loud however you can certainly hear it all the time if you listen for it which so far is the main thing that I try not to focus on however ultimately do. Maybe the best route to go would be the db with the glacier (TTVJ's deal is hard to pass up), port (the low battery life kind of nukes that) or maybe another amp. Or if it is the luck of the draw I could request another Theorem and pray it doesnt hiss.
Edited by Poimandres - 11/15/13 at 9:12pm
post #118 of 322

Any theorem you get will hiss exactly the same as the one you have now. If you don't want hiss buy the RSA intruder or the ALO international.


Edited by rmilewsk - 11/15/13 at 10:16pm
post #119 of 322
I was considering the ALO however isnt the output z around 43 ohms?

Shigzeo what are your opinions on the Theorem versus the International?
post #120 of 322

The International is ALO's most comprehensive portable. It doesn't perform as well as the Theorem does but it is a very very good machine. It is also the first ALO portable amp to not hiss much. But again, if ultimate performance is your thing, the 720 is it. Both have very powerful outputs for high ohm headphones but the Theorem extends way into the earphone level which is harder to drive for resolution.

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