[ameyer17]

I was looking through the back of my MS1s... the driver appears to say:
HF/106/92
32 (ohm symbol)
SR 100 32
A quick google search shows that there was a Grado SR 100 at some point... so, it appears that the MS1 is based on the now discontinued SR100
EDIT
I'm not sure. Upon further review, it might say SR400 or SRA00

 

[eitook]

interesting revelation....
i always thought the ms1 was based on the sr125. Lets wait for the other ms1 owners to chirp in on this

 

[akerman]

Most say SR125, some say SR80 - though I've always thought it weird that they would be priced lower than the SR125, if that's what they're based on.. doesn't match up with the fact that MS2 costs the same as SR325 and MSpro costs the same as RS-1.

 

[LTUCCI1924]

HI: I would think the MS-1 are based on the 125 because I had the 60,80 and the MS-1 sound a lot nicer than either of them. IMO. I now have the 225 and although the 225 sound better than the MS-1, I could have very easily have lived with the MS-1 and for their price I think the MS-1 are a great buy.

 

[Yikes]

I think that the Grados (and therefore the Allessandros) are great products, but the rumors that the MS-1’s are modified SR-125’s are purely the delusions of MS-1 owners believing that they have found some Special deal.

There was a thread that talked about the differences: http://www6.head-fi.org/forums/showthread.php?t=116226

My thoughts on the matter:

Quote:

Originally Posted by Yikes How are they "tweaked"? How is it "modified"? I'd bet that the MS-1 is basically a SR-80. The 80 are the top model with a 1/8 mini jack. Why would they put a 1/8" plug on a set of headphones intended for the Pro Market? It’s because the 80's come with it that's why. Some might say that the MS-1’s claimed frequency response of 20 – 22khz means that it is a SR125. The specification without a tolerance is meaningless. If I claim that the SR-60 has a response of 12hz to 30khz it is just as true. Without listing a tolerance (+- 3db) any specification is true. Even a 1” tweeter could have 20hz to 50khz listed, and it would be true. The only problem is that at 20hz it might be down 50db, but it still has output. Then there is the MS-2, obviously it’s an old SR-325. Please tell me how they are tweaked and or modified? Wait a second; in order to say exactly how they are modified you would have to know what model it is based upon. SR-80 $95 retail = MS-1 $99 retail SR-325 $295 retail = MS-2 $299 retail RS-1 $695 retail = MS-Pro $699 retail Do you really think that Grado would continue selling Alessandro SR-125’s (to be made into MS-1’s) if Alessandro undercut Grados own SR-125 by $50? I think not. Don’t get me wrong. I am a Grado fan, and therefore I must be an Alessandro fan. Alessandro is just another marketing channel for Grado. Alessandro owners can believe that they are getting a “tweaked” Grado, it’s great marketing.

 

[xluben]

 

[enemigo]

Yikes:
You're not taking the UHPLC voice coil into the consideration. Also, is there reasjon to believe that Alessandro would deliberately forge the specs?

The idea of the MS-1 beeing based on the SR-100 seems pretty good to me. I hope someone pursuits this explaination.

Knut

 

[SptsNaz]

I really doubt this, but I guess it never hurts to find out. Maybe the MS2 are based on the SR300's? Nah

 

[James63]

I just ordered a MS-2i the other day. Before I ordered I e-mailed them to make sure they were made from the new 325i version. They said yes it is.