View Full Version : Osawa OS 101 Moving Induced Cartridge

07-27-2012, 03:27 PM
The main reason for opening this thread is first its making me enjoy spinning my lps and very little info availible on this cart,and i am having a great time spinning some lps on this excelent IMHO cart.
Its been spinning for some 30/40 hours on my Kenwood KD 990 TT and it has blended into a one of the carts that will not leave my stable.
Tracking at 2.1gms this cart tracks very well,the tapered cantilever makes this cart sing much to my liking especially on the double bass drum pounding for heavy metal music.
It has an excelent thunderous tight bass,that surports the whole sound.
Soundstage is centered and stereo effect pronounced.
Highs are NOT splashy and sound very real that is not easy to get from other carts i have.
I am enjoying this cart very much.

INF wanted please (manufacturer,stylus options,etc) dont be shy!!

Here are the specs for the OS 101 /201 / 301 cartridges

And some fotos of the beast

This OS 301 pic from VE is to have a view of the top of the cart

07-27-2012, 04:34 PM
Neat how it uses an unusually small spherical tip .5mil, too bad the specs dont list the inductance. often wondered what happened to Osawa, cartridge resembles a Nagaoka in appearance.

07-29-2012, 06:02 AM
Well i really would like to know who made this cart??
the research i made gives me hints of Nagatron ,Nagaoka but nothing conclusive.
here are some other carts and stylus that seem to be the same maybe this will help to put some more information on this cart.

ASTATIC N1640 N1642
EVG 3092D PM3092D
ONKYO DN-1005 DN1005
RECOTON SP813 SP893 813 893
SANSUI SN-28 SN-37 SN28 SN37
SHARP STY-104 STY-122 STY-114 STY104
STY122 STY114
YAMAHA N-2500 N2500 N-2600 N2600

SV-28 SV28
SHARP C-104 C-114 C104 C114
YAMAHA CG-2600 CG2500 CG2600

SANSUI 1100 2200 4400 920 100 2200
FR-D25 FRD25 FR-D25B FRD25B FR-25 FR25
SR-212 SR212 IS-660 IS660 IS-770 IS770 IS970
P-D20 PD20 SR-212 SR212

07-29-2012, 01:24 PM
There are also various reference to J. Osawa in "Gramophone" magazine:

The company is still around but seem to have evolved and left the audio field.:scratch2:

07-29-2012, 06:00 PM
Thks for your help on this research Balifly i had googled up that inf.
I think you have a Nagaoka MP11 can you or someone else tell me if this cart resembles the MP 11 in any way?
I did find this very similar fotos of a Unitra Fonica with Tenorel stylus

07-29-2012, 07:38 PM
Here is so so picture of the unused MP-11, still in the cartridge case.:music:

07-29-2012, 08:34 PM
Looks like a Shure crossed with an ADC.

07-29-2012, 09:26 PM
I have a Osawa OS200mp on a Dual 1257 that I have not been able to find any info about. It is a great sounding cartridge. I hope I can find a stylus for it. I tried a few months back and the only thing I could find was stylus for the os101. Good luck with yours.

07-30-2012, 09:27 AM
There is a difference in this stylus replacement stylus and my Original let the image rotate and compare the inside the original(1st post) has a metal strip the replacement does not have. Will this affect SQ??

07-31-2012, 08:13 PM
I too have an Osawa-branded Nagaoka OS-200MP. You can find some info on the line (100, 200, 300) on page 14 within Michael-Otto's Nagaoka archive:

The stylus you want is the N-200MP ( %26tag%3Derwinssammelsuri%26linkCode%3Dsp1%26camp% 3D2025%26creative%3D165953%26creativeASIN%3DB0063D AN4G). Actually, the one you really want is the N-300MP ( with the carbon fiber cantilever. At 120 Euros, it's a little expensive for us USians.

The rumor is that Nagaoka was a great admirer of Pritchard's ADC designs. Sure enough, some of their stuff (eg, the OS-101) strongly resembles ADC's 1969-71 models ( I believe Osawa was simply the name of the original importer/distributor.

07-31-2012, 10:00 PM
I too have an Osawa-branded Nagaoka OS-200MP. You can find some info on the line (100, 200, 300) on page 14 within Michael-Otto's Nagaoka archive:

The stylus you want is the N-200MP ( %26tag%3Derwinssammelsuri%26linkCode%3Dsp1%26camp% 3D2025%26creative%3D165953%26creativeASIN%3DB0063D AN4G).

The rumor is that Nagaoka was a great admirer of Pritchard's ADC designs. Some of their stuff strongly resembles the 1969-71 models ( I believe Osawa was the name of the original importer.

Thanks for posting the links and the interesting information.

On a related matter, I have a Nagatrone 185E with out a stylus.

I think I have found a new unused one.

Any information about this company would be very welcome! :thmbsp:

08-01-2012, 04:25 AM
On a related matter, I have a Nagatrone 185E with out a stylus. I think I have found a new unused one.

705-D# is the Pfanstiehl stylus index number for the 185E. So far, all I can find are conicals.
Nagatron was one of Nagaoka's several acknowleged cartridge brands. IMS, Nagaoka, Jeweltone and Osawa are the others I know of. Nagaoka also did covert OEM work for many other far more famous (in the NA market, at least) brands.

08-01-2012, 07:53 PM
Thanks for the info. I really like this cartridge.

08-02-2012, 09:39 AM
Well this cart is a keeper, great for doublebass drums and heavy metal.
So do you guys think the Nagaoka MP 100 stylus will fit this cart??as well.

08-02-2012, 11:42 AM
I have a 101 and it is my favorite cart for some reason. I can't bring myself to get rid of it, even though I have it on a turntable I hardly ever use. It just sounds great to me. That's always subjective, but it is true.

Osawa made two lines of carts - the MP and OS, as I recall. The OS is the lower end one (yours), but it is a lot easier to get needles for those and impossible for the higher end MP ones unless you want to dump a ton of cash. They were related to Nagaoka somehow as a company.

The MP stuff will not fit this, so you are lucky in that those are pricey and hard to find, and that you can find a replacement sub needle fairly easily. The 101 used a .5 spherical. I sub the Sansui SN28 needles in mine. They are conical .7, but sound fine. You can get those off of ebay cheap enough. The jobber number is 698-d7. Every one I have found was great . I suppose if you found a 698-de you would find the eliptical 201/301 needle, and the fit is the same. In theory if you found a 698-d3 you could play 78 rpms!

08-02-2012, 12:19 PM
eb2jim Thk you for some objective information.So is the MP the same cart internally and uses the same stylus as the Nagaoka MP 100/110?
The OS series is also Made buy Nagaoka?? but is a different cart altogether and uses a stylus that fits only the Os series?

08-02-2012, 05:41 PM
I don't believe the MP is the same internally as the OS. They are two different animals. The Nagaoka MP is the same as the Osawa MP from what I have found. I have a couple of the Osawa MP carts in my junk pile. I just can't be bothered buying a needle for them. They don't look like the OS cartridges.

I don't know if the OS stuff was even made by Osawa or Nagaoka. That series seems to have been designed to use the Sansui styli, so it may be an original cartridge designed to use a fairly easy to source needle, or it could just be a re-badged cartridge made by someone else. It may actually be a variant of the Sansui ST28 cartridge. I don't know specifically, and have no Sansui cartridge to compare it with. But it is a well-made and nice sounding cartridge for sure.

08-02-2012, 05:45 PM
It seems it also was a needle for Sanyo/Fisher (makers of the MG29/RedEd/Goldring Elektra) and Pioneer, among others. You can see the same needle holder here:

08-03-2012, 04:17 AM
Plenty of conical stylus available,actually im not looking for a spare stylus o got 1/2 dozen of these carts for a nice price.
Have not seen a replacement stylus for sale that has a "metal strap" inside the stylus body like the one i have.See pict
So no one can identify the manufacture of this cart???

08-05-2012, 08:37 AM
What are your opinions on the manufacturer?
I found this pic of a Adc 220 and it looks similar to the Osawa.

08-06-2012, 03:55 PM
ADC and its successor company Sonus are still well-regarded in the US, though they've both been out of the phono cartridge business for decades. Both companies were founded by the late Peter Pritchard.

That 220X represents the look and layout of the ADC line ca. 1970, just before the introduction of the famous XLM. Nagaoka (the OEM of the Osawa cartridges) was apparently a fan of Pritchard's induced-magnet designs, and they're still using the principle in their current MP (moving permalloy-- call it moving iron) models.

08-07-2012, 12:01 PM
Yes Wualta this was by what i have read from my research known back then as "The Brick" i have one adc 220 like this but the styli shanks are different.
Do you think this Osawa OS101 was made by ADC?
What about the metal strip inside the stylus casing?

08-09-2012, 05:38 AM
Nomenclature: The 220 (don't get it confused with the 220X above or the similar 220XE, both true Bricks) is a bright-red "pre-Brick" design that actually has more in common with the later XLM-- the magnet is in the stylus.

Most of the Japanese induced-magnet (aka moving-iron or MI) carts I've seen keep the magnet in the body, Brick style, which is odd, since the Bricks are the only cartridges Pritchard designed that way, as far as I know, and they were only on the market for 5 years, tops.

Now here's the interesting bit: I just got, from Korea of all places, a bunch of integrated cartridge-headshells by various manufacturers. A couple of Sonys (not made by Sony, of course), a couple of Technics/National/Panasonic/Matsushitas, and one that looks just like your 101 except of course it's built into a headshell. Same color, same everything...except the stylus doesn't have that funny little metal button.

Based on my study of Brickology, I'm going to guess that its function is just like that of the round slotted/channeled metal button on Brick styli that ends up sandwiched between the magnet and cantilever when you slide the stylus on. The only function I can see it having is a pole piece to concentrate the flux of the magnet. It also helps hold the stylus to the body.

So: nice to have, since if my guess is correct, it increases sensitivity, but not absolutely necessary.

I typed that, then went to do a little snooping and found this very interesting bit on the site. They show two versions of the Pfanstiehl index # 698 stylus, and they call the "button" a "helper magnet". Wild. Is the button magnetic on your stylus? Take a look:

08-10-2012, 03:22 AM
Yes they do have one with the metal strip as a volume booster.i had wondered about the output volume because the specks for this cart are 2.8 mV and my amp knob is +- the same as when i hear my AT3400 rebadged(Pioneer PC 220) that states 3.5mV.
Well this cart really has a great sound,
It has a deep bass,nice midrange and the highs are tight.
It also tracks really well and what i like best is the speed at which it picks the signal,making it very focused.
A Keeper on my stable.

08-12-2012, 11:27 AM
Did you happen to check that "metal strap" / "button" to see if it really is a magnet?

08-30-2012, 06:43 PM
The OS-1/2/300MP crowd can finally get an original elliptical stylus for their cartridge for a reasonable price. It's not state-of-the-art, but for $17 shipped, I won't complain. Take a look at this Nagatron (another Nagaoka brand), and remember, Nagaoka loved to OEM cartridges for everyone. So I wasn't surprised to find that Nagaoka had made a clone of their own Osawa/Nagaoka OS series--the Nagatron 1400ER:

Does the cartridge body look familiar? It should. That snoot hanging down from the front-end overhang is the magnet holder, just where it is in the OS-200MP. More importantly, its Nagatron-brand 4x7 elliptical stylus, the 1440E, fits the OS-200MP perfectly.

It not only fits but sounds great at 2g. I detected a little brightness way up top, but again, for the price...

If you go looking for the 1440E stylus: Using the 735 Pfanstiehl index # for the 1400ER's styli, all you'll find is conicals, 735-D7. You won't find a 735-DE. But you will find online auction sites selling the 1440E. And there may be other clones out there. They may look different, just as the 1440E looks very different from the N-1/2/300P.

They're something to use while you save up for that N-300MP stylus.

Back to the Osawa 101 for a moment: Technics even sold a version called the SD-37. So there should be lots of styli in disguise out there, hiding in plain sight. Still haven't found an elliptical (OS-201, 301) yet, though.

09-22-2012, 08:24 AM
Well Thats great news Wualta Thanks for letting us know the results of your research and about these options
My OS 101 has become one of my favorite now with near 250 hours use.Although not shure from the beginning i could tell it sounded like the Nagoaka bass signiture sound.
I love this cart.

09-22-2012, 12:18 PM
Good to hear. It's frustrating that it's so hard to find anything but conicals for these carts. They're all relatives of one another, just with different plastic bits. If you broke the cantilever assembly free of the plastic, you could use one of the different Nagaoka styli in your 101.