Rotel RA-1062 vs Simaudio Moon I-5

I managed to get the I5 in my system to corroborate my earlier claims.

First of all, I want to make clear that my Yamaha's NS 1000M are not in stock form. Their croosovers and cables were replaced for a simplified version. Remember, LESS IS MORE, BUT NOT LESSER... I now reckon that the Yammies are a bit compressed in their stock form. Excessive detail is very often mistaken for resolution and accuracy. NOT THE SAME THING, one cannot fool the ear...

This time I used a slightly different set-up for null test both amps in order to get a more objective measurement than just listening for the null. By doing so I managed to measure each amp connected to the 1k's and in my listening room. What I did is very simple, I connected a tape recorder to the amp which was measuring the null. This way I was able to monitor the difference level between the output and input of the amp under test by the means of a peak level meter (LED vu-meter) while also getting additional gain. The LED vu-meter is scaled from minus infinite to +6 dB, through -10, -6, -3, 0, and +3 dB levels, with the red range going from 0 dB upwards.

With "Just a friend of mine" song from the belgians "Vaya con Dios" for example, the I5 is systematically hitting the 0 dB mark, while the 1062 roughly passes the -6 dB level. This level difference was consistent through out all the music tested.

I can now safely say that the Rotel 1062 is at least 6 dB, or two times, better than the Sim I5. That's how good the Rotel is...

As for the sound, I can confirm that the I5 rounds-off important little spacial and harmonic clues adding extra body (normally, a sign of 2nd order harmonic distortion strong presence, the I5 THD figure of 0.1% confirms this somewhat, which the ear interprets like a far more natural and pleasant occurrence as opposed, for example, to odd-order harmonic distortion from an amp when clipping; try to play a piano key and then play that same key simultaneously with another one positioned one octave higher, you'll get more body to the sound). The 1062 has far more, two times more, resolution and it is therefore two times more accurate. With the Rotel you get more of the piano and more of the space surrounding the instruments and the musicians. You hear more of the music...

 

Not got this concept. Please explain to me what "excessive detail" is. Is this information on the recording?

Controversial.

 

So you changed the process from what you did before. Then the results are fairly much non relevant.

Next please.

 

how can detail be excessive? its either there or it isn't,

 

Let me ask you something:

How do you know when the sound is compressed?

 

We may answer, when you have answered the questions posed to you.

 

Actually I'll back our Portuguese amigo up on this one.

There are plenty of bits of kit that give the illusion of extracting greater detail by highlighting certain bands at he expense of others, thereby givin g undue prominence to some insignificant piece of minutae.

Still think he is missing the point though

 

But surely Mr M, that would be unessecary attenuation of one or more frequencies giving an impression. Not actually to much detail?

 

It would give subjectively more detail Mr P

But of course subjectivity should not come into it.

PS. Do you remember Reggie Perrin?

 

i think in this instance BD should be applauded for going the extra mile, putting his money where his mouth is, doing the tests and posting the results. if he wants to judge and choose his amp solely on the basis of this test then who are we to argue. he has stated a preference for the rotel (subjectively) and backed it up objectively which is more than most of us do. to be honest i'd not follow his path but if he's happy then great.
cheers


julian

 

Indeed i do.

 

Then do you recall the name of his employer before he set up his Grot empire?

 

would the initials be similar to someone who behaves in a similar fashion to someone else?

 

fair point Julian,and fair play to BD

but for discussion purposes,i just don't understand what this means

Excessive detail is very often mistaken for resolution and accuracy.

 

Geez, you hould be writing horoscopes for a daily

 

Saab,

Why is radio sound intentionally compressed?

If you understand that you'll have your answer.

 

On a good hifi, compression sound horrible. It's on the software though, not hidden inthe Speakies

 

oh i see

 

What is good Hi-fi, Merlin?