IROX Blue Cartridge

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IROX Blue Cartridge

by Sound-Smith

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Product Code:
IROX Blue Cartridge
IROX Blue Cartridge
Have a question about this product? Please email our audio advisor or call 1-877-929-8729 with any questions or concerns regarding your equipment purchase.

The IROX Blue cartridge is hand-made to extremely exacting specifications by the president and chief engineer of the Soundsmith, using carefully selected and precision processed magnetic materials. The unique design results in a virtually ”indestructable" cartridge, providing the listener with unparalleled performance through employing a tiny, ultra-low mass high-purity moving iron element. The IROX Blue cartridge differs primarily from other cartridges in that the moving mass has been reduced to an astonishing small level, with the stylus* and cantilever** using the best choices of material, shape and structure to achieve a level of durability heretofore not achievable. A key optimizing element in The IROX Blue is the use of a singlepiece, ultra low-mass moving iron, stylus and cantilever assembly. In a similar sense to a “moving coil” cartridge, it does not have user replaceable styli, as The IROX Blue is designed for optimal performance. The IROX Blue is a “moving iron” design, and is compatible only with standard “moving magnet” phono inputs. It does not require the use of a special “moving coil” input or moving coil preamp. Your production select cartridge is housed in an handmade composite body to enhance the performance.

The Soundsmith has taken great care to manufacture this cartridge to exacting standards and performance. It should provide you with many years of fine listening from your treasured vinyl collection.

Here is the "micro-manufacturing" reality:

Although most entry level cartridges from all manufacturers are machine made, ours are hand made. Even so, the reality is that when you are manufacturing something so tiny, that has to perform so well, all of them are NOT the same. If you don’t see this statement from other manufacturers, then this is a "secret" they don’t want to share, and quite understandably so.

So.....what does Soundsmith do?? We carefully hand build each and every cartridge, test them, and keep accurate records by serial number of their performance. Those that meet or exceed specifications are sold. But, there are always a few that don't measure well. What do we do with them? We don't sell them. We break them down and re-use some parts that can be used again. Does this cost real money ? You bet. But what it does do is this.....the ones that DO pass our stringent testing out-perform many cartridges selling for two, three, four, or even five times the price. Are we unabashedly proud of our hand-made cartridges??


Some ask: "Moving Iron Cartridges better?? I thought that moving COIL types are the best??"

Our cartridges overturn the myth that moving coil cartridges are the only path towards perfection. After all, what is the accepted “advantage” of moving coil cartridges? Low effective moving mass, right? Well, we've got less. Much less. And if you understand EFFECTIVE moving mass, Less IS more. Why is that good? Because when you lower the moving system mass, it’s easier to control. If it’s easier to control, the stylus can stay in better contact with the groove walls. That’s good, because if you can’t stay in contact with the groove walls, you can’t hear what’s on the record.

Stylus: Selected Contact Line low mass Nude Stylus
Radius of curvature: 6 x 17 μm
Cantilever: Boron
Recommended Tracking force: 1.8 to 2.2 Grams
Effective tip mass: 0.32 mg
Compliance: 10μm/mN (low compliance)
Frequency response:
15-45,000 Hz ± 2.0 dB
Channel Separation (stereo only): 1000 Hz >28 dB 50-15,000 >25 dB
Channel difference: <1.0 dB (Stereo) <0.5 dB (Dual)
Mono operation- w/optimal VTF setting
Output voltage: 2.4 mV
Cartridge weight: 10.27 Grams
Loading: ≥ 47 kΩ

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