Audio T Verdict
The Ortofon 2MR Blue is the cartridge to look at if you like what the 2M Blue does but your turntable needs a lower-profile cartridge. It packages the Blue's excellent Nude Elliptical stylus and 5.5mV moving magnet generator into Ortofon's 3mm lower 2MR body, making it particularly useful for Rega and other fixed-height tonearms.
The Blue is also one of the sweet spots in Ortofon's 2M family. Its Nude Elliptical diamond is a worthwhile step up from the bonded Elliptical stylus of the Red, bringing lower moving mass, improved tracking and greater retrieval of fine groove information without moving into the more demanding Fine Line or Shibata profiles further up the range.
Add full compatibility with Ortofon's 2M replacement styli and the 2MR Blue becomes a very flexible cartridge too. You can replace the Blue stylus like-for-like, move down or up the stylus range later, all while retaining the reduced-height cartridge body.
Ortofon 2MR Blue
The Ortofon 2MR Blue is a low-profile moving magnet cartridge developed for turntables and tonearms that benefit from a reduced cartridge height, including many Rega designs.
It combines the performance of Ortofon's 2M Blue concept with an ultra-slim 2MR housing that is 3mm lower than the conventional 2M body.
- Low-profile moving magnet cartridge
- Part of Ortofon's 2MR Series
- Designed for low-profile turntables and tonearms
- Particularly suitable for many Rega applications
- 3mm lower cartridge housing
- Nude Elliptical diamond stylus
- r/R 8/18µm stylus radii
- Aluminium cantilever
- Quad-coil motor system
- Split pole pin technology
- OFC coil wire
- 5.5mV output voltage
- 80µm tracking ability at 315Hz
- 20µm/mN dynamic lateral compliance
- 1.8g recommended tracking force
- 150 to 300pF recommended capacitance
- Polymer and aluminium cartridge body
- Half-inch mounting
- 6g cartridge weight
- 100% compatible with Ortofon 2M styli
What Is the 2MR Series?
The 2MR range takes Ortofon's established 2M moving magnet technology and places it inside a specially developed reduced-height cartridge housing.
Ortofon created the format for turntables and tonearms where a conventional-height cartridge can affect tonearm geometry or require additional spacers beneath the arm.
The 2MR housing is 3mm lower, allowing it to integrate more naturally into these installations.
Designed for Low-Profile Tonearms
Some tonearms provide straightforward height adjustment, while others are designed around a largely fixed vertical position.
Rega is one of the best-known examples, which is why Ortofon specifically references turntables and tonearms such as Rega when describing the 2MR Series.
The reduced cartridge body helps maintain appropriate tonearm geometry without automatically needing to raise the arm with spacers or shims.
Why Cartridge Height Matters
A cartridge does more than simply bolt onto the end of a tonearm. Its height affects the angle at which the arm and stylus sit while playing a record. The 2MR format has been developed specifically for turntables where reducing cartridge height produces a more natural mechanical fit.
3mm Lower Than the Standard 2M Body
The defining physical difference is the 3mm reduction in cartridge height.
That may sound modest, but several millimetres at the headshell can make a noticeable difference to the angle of a fixed-height tonearm.
The 2MR format therefore gives customers a purpose-designed alternative to fitting spacers simply to accommodate a taller cartridge.
2MR Blue or Standard 2M Blue?
These cartridges are aimed at different physical installations rather than representing different performance levels.
2M Blue
- Standard-height 2M body
- 7.2g cartridge weight
- Nude Elliptical stylus
- 5.5mV output
- Standard half-inch mounting
2MR Blue
- 3mm reduced-height body
- 6g cartridge weight
- Nude Elliptical stylus
- 5.5mV output
- Standard half-inch mounting
If your tonearm readily accommodates a conventional 2M cartridge, the standard Blue remains appropriate. If cartridge height is a concern, particularly on a fixed-height tonearm, the 2MR Blue is the version designed specifically for that application.
Nude Elliptical Stylus
The 2MR Blue uses a Nude Elliptical diamond stylus with radii of r/R 8/18µm.
The elliptical profile enables the stylus to follow smaller groove modulations than a simple Spherical design, while the nude construction reduces unnecessary moving mass.
This is the key mechanical upgrade that separates Blue from Red within the 2M family.
What Does Nude Mean?
A nude stylus is formed directly from the diamond rather than using a small diamond tip attached to a separate mounting shank.
Removing that additional material reduces the amount of mass the cantilever needs to move.
The stylus assembly can therefore respond more readily to rapid changes in the groove.
Blue vs Red Stylus
The Red and Blue use the same broad Elliptical 8/18µm geometry, but their construction is different.
2M Red Stylus
- Elliptical diamond
- r/R 8/18µm
- 70µm tracking ability
- 20µm/mN compliance
- 1.8g recommended tracking force
2M Blue Stylus
- Nude Elliptical diamond
- r/R 8/18µm
- 80µm tracking ability
- 20µm/mN compliance
- 1.8g recommended tracking force
The Blue's nude construction and higher specified tracking ability are the major reasons to choose it over Red.
Aluminium Cantilever
The Nude Elliptical stylus is mounted on an aluminium cantilever.
The cantilever transfers every movement of the diamond into the cartridge generator and forms a critical part of the moving assembly.
Quad-Coil Motor System
The 2MR Blue uses a high-performance motor system with quad coils and split pole pins.
The generator converts the physical movement traced by the stylus into the electrical signal sent to the phono stage.
Split Pole Pin Technology
Split pole pins are one of Ortofon's key moving magnet technologies.
The design is intended to reduce magnetic energy losses within the generator and improve linearity across the audible frequency range.
This allows the 2M platform to combine the practical advantages of moving magnet with a highly developed generator system.
OFC Coil Wire
The 2MR Blue uses oxygen-free copper coil wire.
Ortofon specifies the complete motor system as quad coils with split pole pins and OFC coil wire.
5.5mV Output
The 2MR Blue produces 5.5mV at 1kHz and 5cm/sec.
This healthy moving magnet output makes it straightforward to partner with conventional MM phono stages in integrated amplifiers or standalone units.
It does not require the additional gain needed by a low-output moving coil cartridge.
Which Phono Stage Do I Need?
The 2MR Blue is a moving magnet cartridge.
Use a suitable MM phono input. The 2M Blue platform is designed around conventional 47kOhm MM loading and Ortofon recommends a total capacitance of 150 to 300pF.
What Does Capacitance Include?
The total capacitive load includes the tonearm wiring, phono cable and phono-stage input capacitance. An adjustable phono stage can provide useful flexibility when fine-tuning a moving magnet cartridge.
80µm Tracking Ability
Ortofon specifies tracking ability at 80µm at 315Hz.
This is higher than the 70µm figure of the Red stylus and reflects the Blue's more capable Nude Elliptical assembly.
Good tracking helps the cartridge remain securely in contact with demanding groove modulation.
20µm/mN Compliance
Dynamic lateral compliance is specified at 20µm/mN.
Compliance describes the flexibility of the cartridge suspension and should be considered alongside tonearm effective mass when assessing mechanical compatibility.
1.8g Recommended Tracking Force
The 2M Blue stylus specification gives a tracking-force range of:
- Minimum: 1.6g / 16mN
- Recommended: 1.8g / 18mN
- Maximum: 2.0g / 20mN
For normal setup, begin at Ortofon's recommended 1.8g.
Don't Deliberately Track Too Light
Reducing tracking force below the manufacturer's range does not automatically protect your records. A stylus that mistracks can increase distortion and groove stress. Keep the Blue stylus within Ortofon's specified 1.6 to 2.0g range.
20-Degree Tracking Angle
The Blue stylus assembly is designed around a 20-degree tracking angle.
That makes cartridge and tonearm geometry important, which is exactly why Ortofon developed the reduced-height 2MR housing for fixed-height applications.
6g Cartridge Weight
The 2MR Blue weighs 6g.
This is lighter than the standard 2M Blue's 7.2g body and should be taken into account when balancing the tonearm and setting tracking force.
Polymer and Aluminium Body
Ortofon specifies the cartridge body as a combination of polymer and aluminium.
The reduced-height housing is engineered specifically around the mechanical requirements of the 2MR format rather than simply cutting down a standard 2M enclosure.
Standard Half-Inch Mounting
The 2MR Blue uses conventional half-inch mounting and attaches to the tonearm using two screws.
This gives it broad compatibility with suitable tonearms while retaining the lower profile of the 2MR body.
100% Compatible With 2M Styli
Ortofon explicitly states that the 2MR cartridge platform is 100% compatible with all 2M styli.
This is an important advantage because you are not locked into a special 2MR-only replacement stylus.
The direct replacement for the Blue is the Ortofon Stylus 2M Blue, but other 2M styli can be fitted if you want to change the performance level.
Replacing a Worn Blue Stylus?
If you want to retain the cartridge's original specification, fit a replacement Stylus 2M Blue. The cartridge body can stay mounted and aligned while only the stylus assembly is changed.
A Simple Upgrade From Red
The Red and Blue belong to the same 2M generator family, making a Blue stylus a particularly straightforward upgrade for a 2MR Red owner.
The cartridge body can remain fitted while the bonded Elliptical Red stylus is replaced by the Nude Elliptical Blue assembly.
Tracking force remains at the same recommended 1.8g, although it should still be checked after fitting the new stylus.
Can You Upgrade Beyond Blue?
Yes. The 2MR platform accepts the wider 2M stylus range, including Bronze, Black and Black LVB 250 options.
However, Ortofon uses different generator families within the broader 2M range, so simply fitting a higher-level stylus does not turn a Red/Blue generator into exactly the same complete cartridge as a Bronze or Black.
If you are planning a significant jump up the range, Audio T can advise whether changing only the stylus or replacing the complete cartridge makes the most sense.
Compatible Doesn't Mean Identical
Ortofon confirms physical compatibility across 2M styli, but the generator specifications differ between parts of the 2M range. For the closest intended upgrade path, Red to Blue and Bronze to Black are the natural pairings.
2MR Blue or 2MR Bronze?
Moving from Blue to Bronze changes more than just the colour of the stylus assembly.
2MR Blue
- Nude Elliptical stylus
- r/R 8/18µm
- OFC coil wire
- 5.5mV output
- 20µm/mN compliance
- 1.8g recommended tracking force
2MR Bronze
- Nude Fine Line stylus
- r/R 8/40µm
- Silver-plated OFC coil wire
- 5mV output
- 22µm/mN compliance
- 1.5g recommended tracking force
The Bronze introduces both a more sophisticated Fine Line stylus and the higher-specification Bronze/Black generator family.
Ideal for Many Rega Turntables
The 2MR format is particularly relevant to Rega turntables because many Rega tonearms use a fixed or largely fixed mounting height.
The 3mm reduced-height body helps the cartridge integrate more naturally without automatically requiring a tonearm spacer beneath the arm base.
Still Check Your Particular Turntable
Turntables can differ through platter upgrades, mats, tonearm changes and previous modifications. The 2MR is designed for low-profile applications, but Audio T can check your particular deck before installation rather than assuming every setup is identical.
Key Features
- Ortofon 2MR Blue
- Moving magnet cartridge
- 2MR low-profile body
- 3mm reduced cartridge height
- Designed for low-profile tonearms
- Suitable for many Rega applications
- Half-inch mounting
- Nude Elliptical stylus
- r/R 8/18µm stylus radii
- Aluminium cantilever
- Quad-coil generator
- Split pole pin technology
- OFC coil wire
- 5.5mV output voltage
- 80µm tracking ability at 315Hz
- 20µm/mN dynamic lateral compliance
- 1.6 to 2.0g tracking-force range
- 1.8g recommended tracking force
- 20-degree tracking angle
- 47kOhm MM load
- 150 to 300pF recommended capacitance
- Polymer and aluminium body
- 6g cartridge weight
- Blue stylus colour
- User-replaceable stylus
- 100% compatible with Ortofon 2M styli
Frequently Asked Questions
Is this the Ortofon 2M Blue or 2MR Blue?
This product is the low-profile Ortofon 2MR Blue.
Is the Ortofon 2MR Blue still current?
Yes. Ortofon continues to list the 2MR Blue within its current 2MR range.
What does 2MR mean?
2MR is Ortofon's reduced-height version of the 2M platform, developed for turntables and tonearms requiring a lower-form-factor cartridge.
How much lower is the 2MR body?
Ortofon specifies a 3mm height reduction compared with the standard 2M housing.
Is the 2MR Blue designed for Rega turntables?
Ortofon specifically identifies turntables and tonearms such as Rega as applications for the reduced-height 2MR housing.
Does it always remove the need for Rega spacers?
The body is designed to eliminate the need for spacers in appropriate low-profile installations, but individual turntable geometry can vary, so the particular deck should still be checked.
What stylus does the 2MR Blue use?
A Nude Elliptical diamond with r/R 8/18µm stylus radii.
What is the difference between Red and Blue?
The Red uses a conventional Elliptical diamond, while Blue uses a Nude Elliptical design with lower moving mass and higher specified tracking ability.
What cantilever does it use?
Aluminium.
What is the output voltage?
5.5mV at 1kHz and 5cm/sec.
What coil wire does it use?
OFC, or oxygen-free copper, coil wire.
What is the generator system?
Quad coils with Ortofon split pole pins.
Is the 2MR Blue moving magnet or moving coil?
It is a moving magnet cartridge.
Which phono stage do I need?
Use a suitable moving magnet phono input.
What capacitance does Ortofon recommend?
150 to 300pF.
What tracking force should I use?
Ortofon recommends 1.8g.
What is the tracking-force range?
The Blue stylus specification gives 1.6 to 2.0g.
What is the tracking ability?
80µm at 315Hz.
What is the dynamic compliance?
20µm/mN.
What is the tracking angle?
20 degrees.
How much does the 2MR Blue weigh?
6g.
What is the body made from?
Ortofon specifies polymer and aluminium.
What mounting system does it use?
Standard half-inch mounting using two screws.
Can I replace the stylus myself?
Yes. The 2MR Blue uses Ortofon's removable 2M stylus system.
Which stylus is the direct replacement?
The direct replacement is the Ortofon Stylus 2M Blue.
Can I fit other 2M styli?
Yes. Ortofon explicitly states that the 2MR platform is 100% compatible with all 2M styli.
Can I upgrade a 2MR Red with a Blue stylus?
Yes. Red and Blue share the same generator family, making the 2M Blue stylus the natural upgrade for a 2MR Red body.
Can I fit a Bronze or Black stylus?
They are physically compatible with the 2MR platform, but Bronze and Black use a different higher-specification generator family. For a full Bronze or Black specification, replacing the complete cartridge is the more exact upgrade.
Related Ortofon Products and Audio T Guides
Why Buy an Ortofon 2MR Cartridge From Audio T?
The 2MR range exists specifically because cartridge height and tonearm geometry matter. Audio T can help check whether your turntable needs the reduced-height 2MR body, fit and align the Nude Elliptical stylus correctly and make sure the cartridge is properly matched to your moving magnet phono stage.
- Rega cartridge compatibility advice
- Low-profile cartridge guidance
- 2M versus 2MR comparison
- Tonearm height and geometry advice
- Professional cartridge fitting and alignment
- Tracking-force setup
- Anti-skate adjustment
- MM phono-stage matching
- Capacitance and loading advice
- 2M stylus replacement guidance
- Red to Blue stylus upgrade advice
- Bronze and Black upgrade guidance
- Turntable upgrade advice
- Ongoing after-sales support
Contact your local Audio T store to discuss whether the Ortofon 2MR Blue is the right cartridge for your Rega or other low-profile turntable.