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Cypher Labs Theorem 720 - Page 18

post #256 of 309

I've been using a recently produced Theorem for a few hours and the hiss is unbearable.  It doesn't matter if it is a LCD-3, Shure SE846, or a NAD Viso HP-50.  I tried another Theorem from a friend with the same results.  We're both returning our products.  I just don't get it.

 

I noticed a little bit of hiss with a Cypher Labs CLAS -db/Duet combo and it was't much of an issue.  This hiss is ridiculous - even worse than the ALO MK3.   Compared to the non-existent noise floors of other companies, how does any company put out a product that ruins any music with silent parts?

 

A non-existent noise floor should be a minimum standard that amp manufacturers should be held to.  I understand that this is a personal preference, but all the rest of the sound seems irrelevant when I feel like there is a dang mosquito stuck in my earpad. 

post #257 of 309

There's no hiss with my LCD-2 or any other full sized can for that matter

post #258 of 309

Are you sure?  The LCD-3 is probably less sensitive than the LCD-2, and I can even hear the noise floor on it.  It drives me nuts on the SE846.   I use the LCD-3 at medium gain but I think I prefer high gain for the increased dynamics but the hiss gets worse.

 

I must be the unluckiest head-fier around!


Edited by utdeep - 3/25/14 at 5:32am
post #259 of 309
Quote:
Originally Posted by utdeep View Post
 

Are you sure?  The LCD-3 is probably less sensitive than the LCD-2, and I can even hear the noise floor on it.  It drives me nuts on the SE846.   I use the LCD-3 at medium gain but I think I prefer high gain for the increased dynamics but the hiss gets worse.

 

I must be the unluckiest head-fier around!

 

I've been so, so interested in streamlining with one of these new dac/amp combos coming out.  But it seems right now I think I'm very happy with my CLAS/RSA and CLAS/Pure II setups, because I hear nothing in the way of hiss!  Then again, I have old ears. :redface:

post #260 of 309
Go with balanced connection the hiss will be much less and bearable.
post #261 of 309

Somehow "bearable" doesn't instill a lot of confidence.

post #262 of 309

I am all balanced with both the SE846 and the LCD3. 

 

I wish they had stuck the guts of the Duet into the Theorem - it has more power for the high impedence headphones and more range for the senstive IEMs.  At any rate, I prefer the headphone out of my iPhone over this noisy amp.

post #263 of 309

have you checked back with CL?

post #264 of 309
My Theorem does not have "loud" hiss or I might get used to it since I got Rxmk3B. smily_headphones1.gif
post #265 of 309

I don't think I need to because my impressions match up with everything others have said.  We also tried two different Theorems.  I might just be very sensitive to it.

 

Unfortunately, it's a definite deal breaker.

 

If you like hiss, the RXmk3b is perfect for you.  I still liked the RX though... with the HD800.

post #266 of 309
Quote:
Originally Posted by rudi0504 View Post


Hi Sean
I prefer copper color , looks more elegance

Both combinations have some copper colour. Are you referring to the top or bottom one?

post #267 of 309
Quote:
Originally Posted by Scorpion667 View Post

Both combinations have some copper colour. Are you referring to the top or bottom one?

I like all In Copper Color , not The combination Color
Or now has Gold Color look beautiful too


Edited by rudi0504 - 3/27/14 at 4:59am
post #268 of 309

Too bad it isn't available in silver.

post #269 of 309
Quote:
Originally Posted by rudi0504 View Post

I like all In Copper Color , not The combination Color
Or now has Gold Color look beautiful too


Are all Theorem in colors plated with copper and gold? I thought Cypher Labs using real copper or gold but the prices seeem to be the same with black aluminum (?)
post #270 of 309
Has anyone tried the T-Peos H-200 or H-300 with the 720. They are not crazy sensitive IEM so I'm really hoping the noise floor will be minimal. I'll be listening with an iPhone 5s, mostly electronic music
Edited by catcherfly - 4/11/14 at 4:07pm
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