[taso89]

Does anyone know what opamp is in the socket? I'm thinking of putting the OPA627 in the I+ when my HDAM comes in.

 

[Trapper32]

Quote:

Originally Posted by taso89 /img/forum/go_quote.gif Does anyone know what opamp is in the socket? I'm thinking of putting the OPA627 in the I+ when my HDAM comes in.

The opamp used is the MC33078...

 

[taso89]

Never heard of it.. I think I'm going to try LT1364, LM4562, OPA627 at some point and I'll be sure to post results

By the way, 30+ hours of burn-in later, I can definitely pick up the warmness in the sound. It's something that seemed to develop and may get warmer as I go along. I can see now what difference the high current does for the Denons, adds a lot more speed (attack) and works quite well with partial markl mods resulting in improved midrange and more natural highs and soundstage.

BTW, not to detract anyone if they're on the edge trying to decide whether to buy, but the amp seems fairly sensitive to RFI; I have to keep my blackberry about a foot and a half away to avoid noise. It's not a big deal to me but I thought it's worth mentioning as I never had this problem with the Zero.

 

[Covenant]

Quote:

Originally Posted by taso89 /img/forum/go_quote.gif Never heard of it.. I think I'm going to try LT1364, LM4562, OPA627 at some point and I'll be sure to post results

Mmmm, 627 in a hybrid sounds like a juicy combo

Be sure to post results!

 

[Pricklely Peete]

Quote:

Originally Posted by Covenant /img/forum/go_quote.gif Mmmm, 627 in a hybrid sounds like a juicy combo Be sure to post results!

It sure does....I wonder what an HDAM might do in one of these ?

Peete.

 

[Pricklely Peete]

Quote:

Originally Posted by taso89 /img/forum/go_quote.gif I didn't even expect my I+ until tomorrow, but it appears that they rushed it from JFK to my dorm I have some unboxing pics for everyone, sorry if they are blurry I took them on a Blackberry: They glow a little bit but way too faint to see with flash, and only get warm but not hot; I've had them on for an hour and they're still touchable.

By the sounds of it some dude named emill will deliver the manual by hand

Peete.

 

[djork]

Quote:

Originally Posted by taso89 /img/forum/go_quote.gif Never heard of it.. I think I'm going to try LT1364, LM4562, OPA627 at some point and I'll be sure to post results

That's much appreciated. looking forward to your results.

 

[darkswordsman17]

Quote:

Originally Posted by Trapper32 /img/forum/go_quote.gif The opamp used is the MC33078...

I believe that's the same one used in the PreSonus Central Station.

I am mistaken, the PCS uses MC33079D.

 

[Danika k]

Quote:

Originally Posted by taso89 /img/forum/go_quote.gif Does anyone know what opamp is in the socket? I'm thinking of putting the OPA627 in the I+ when my HDAM comes in.

According to this list (http://www.head-fi.org/forums/f5/lis...t-amps-355789/) the I+ uses LM4562.

 

[Seba]

But if you take a look at Little Dot's own pics and my pics you can see that it uses MC33078

 

[nsx_23]

How are people enjoying these so far? I'm on the edge about buying one of these as an intro to tube amps.

 

[taso89]

^
I think they will wonderfully complement your Grados (I'm not sure about the Ultimate Ears), I plan to get a pair of SR225's myself when my wallet permits me as I miss the Grado sound

I'm sure it will only be improved once we explore opamp and tube rolling options, I feel that the opamp here is crucial and is something that can almost definitely be improved; it's the "last line in the chain" so whatever sonic differences one opamp yields vs. another should be quite audible. Plus it's as simple as taking one opamp out and putting another in.

 

[REB]

Quote:

Originally Posted by nsx_23 /img/forum/go_quote.gif How are people enjoying these so far? I'm on the edge about buying one of these as an intro to tube amps.

I'm enjoying it very much. It's my intro into tube amps as well. I'm using it with a K401 (incredible synergy) and a K501 (good synergy). It has some 30+ hours on it and it sounds warm, but not too warm. It's more neutral than I thought it would be and it allows the details in recordings to come out. It seems to add some soundstage to the K501 and a lot of soundstage to the K401 (particularly with good recordings). I haven't tuberolled as of yet (although I ordered the amp with the best tube upgrade), but I will in the near future. For now I am very satisfied, especially given the price, which is absurdly low. The amp does noticeable better with low impedance phones. It drives my HD600 but not to its fullest potential and it simply can't drive a pair of old 600 Ohm DT900's. But it's not fair to ask that, I gues. With AKGs it does very well. I also use it to watch movies (same headphones) and given its good soundstage, that also works well.

 

[Seba]

I'm starting to hear differences between the two amps with RS-1.

MKIV SE sounds much more detailed, refined and has probably drier bass. Oh, and soundstage is bigger too.

I+ on the other hand sounds a little thick and because of that doesn't bring all those nice little details up front (you have to concentrate to find them).

So next step could be to start some op-amp rolling to I+ to see if it can improve to MKIV SE level. I'm thinking of starting with 2xLT1028 or 1xLT1364.

 

[taso89]

Seba,

I'll PM you sometime next week with my LT1364 impressions and you can tell me if they match your impressions with it. I'll try a couple of other opamps and maybe order some of the free ones as well