Is the Rode Classic a sleeping 251?
Rode microcrophones are a shining beacon of mass production here in Australia and have established a brand sound that many know and love. This modification is a great Alternative to buying an expensive vintage microphone as it offers sonics without the pricetag.
The Rode Classic has a build style reminiscent of European the classics of the golden era of sound. and it's circuit topology is very reminicent of the 251, one of the greatest mics of all time. The Classic also sports a NOS Ge 6072a tube and Jensen transforer. There were two types of capsule used over the Rode classic's production period one K67 centre terminated type and another edge terminated type but with similar design topology to a k67. As the capsule is responsible for 85% of a microphones sound, and the and the circuit is VERY close that of the original 251. The addition of a true multi chaimbered OP12 is the missing link that closes the gap!
 
Enter the OPR 251 MOD
It's important to point out that the capsule and it's housing or "head basket" are the ultimate dictator in the sound of any microphone,  imparting the all important sonic fingerprint or DNA if you will, other components and circuit topology also matter, but but not nearly as much.
With that said going straight to the source and replacing the capsule goes a long way. I use my hand made OP12 which is Modelled on the original multi-chaimbered ck12. The capsule famous the world over and the capsule used in venerable C12 and 251 microphones, which are now fetching $20,000- $30,000 USD on the pro audio market. To add icing to the cake the signal path is restored to that of the 251 enhancing sound and fortifying a truly classic sound.
The mod brings the classic  into a completely different teritory. Think airy highs a huge low end and glorious proximity effect along with the amazing detail that the 251 is are known for.
Maybe it's time to make your classic a true classic?
Prices are excluding GST