Apex 460 Mods
The Apex 460 is one of the best mod platforms on the market. We have two mod options for this mic, with more on the way in 2015.
#1: Capsule Replacement
The 460's capsule is a common 32mm K67 type, found in nearly every inexpensive large-diaphragm condenser ever made. It is not a great-sounding capsule, due to its uncorrected high-frequency peak. And it's the wrong capsule for this circuit, in any case.
Our favorite (and best-selling) capsule for 460 mods is the RK-12, which is our version of the capsule in the famous C12 and ElaM 251. The RK-47 is another perfectly viable choice, if you're going for a U47 vibe.
See all of our large-diaphragm microphone capsules.
#2: Fox 460 Circuit Mod Kit
The Fox 460 circuit mod kit is a comprehensive upgrade for the Apex 460. It replaces both circuit boards, 100% of the components in the microphone, and the transformer. It contains a critical mod to the power supply, as well.
One thing to beware of when researching mods for the 460 is that much of the information available online is contradictory. You'll see advice to change the tube and/or the transformer and/or selected capacitors, for example. Some of those things might help your mic, but none of them will come anywhere close to the sonic upgrade of a comprehensive circuit mod such as the Fox 460 kit.
Why? Because only by optimizing the circuit for a specific tube and transformer can the mic's performance be maximized. If you upgrade components piecemeal, you might end up with lower output and higher distortion than in the stock mic. In fact, one popular mod we've seen recommends using a 12:1 transformer, which will drop the mic's output by 3dB while keeping the noise floor the same. That's not a mod you'll appreciate, especially considering the $129 price tag on that transformer!