
Can someone explain the Stax heirarchy to me? If the electrostatic system is so inherently superior, in how many ways and at how many price points can it be marketed? I just can't follow all these Stax models, why some are twice the price of others, why some are drooled over and others apparently shunned. Aren't they all electrostatics?
I owned a Stax Sigma and a Lambda back in the 70s. These models had a clear differentiation of presentation, with very different housings. There was also the Lambda Pro, which apparently had a thinner diaphram and was more expensive, though I was never sure why. Since then a plethora of models has sprouted, and I must say I'm quite surprised at the number of people who are intimately familiar with all the models and which ones measure up and which don't. I'm just totally confused.
Even I'm not sure of the Lambda hierarchy myself. There are some people (notably spritzer) who prefer the original SR-Lambda normal bias to the Lambda Pro and many of the later models, others whose favorite happens to be the Lambda Nova Signature (also discontinued), and still others who may not have a particular favorite, but regard even the lowly SR-202 to deliver sound that outclasses dynamic flagships. (Ortho flagships are a slightly different matter.) Especially when you factor in quotes like these:
"Dinna matter where you start with Stax, you're starting near the top of earphones. Welcome to the wonderful world of clear sound."
"I've been a fan of stax headphones for years. They are the one brand where you don't have to get a flagship to hear high end sound. Heck I would even take an old 202 over a pair of ed8, d7000, and even hd800."
There seems to be some difference in the materials used; the SR-202 only has a felt/cloth headband like the vintage Lambda and Lambda Pro, while the SR-303 on up adds some sort of pleather layer on top to help the headband retain its shape. The SR-507 is also touted as using genuine leather earpads instead of pleather like the vast majority of Lambdas (and I might just pick up a pair to replace my worn-out Lambda earpads). The SR-404 lacks the genuine leather pads and a slightly-revised "fork"/"cup holder"/headband with notched adjustments for the headband on each side that the SR-507 has, but apparently has the same exact drivers. Maybe the earpads are what provide the difference in the sound? Who knows...
But we should also note that Stax likes to sell their headphones as systems, given that they do need specialized amplifiers and all. That could affect the sound somewhat. But in spite of that, Inner Fidelity measured some differences between the current Lambda models, all running from a Blue Hawaii SE...not sure if that's strictly down to the change in materials.
Whatever the case may be, I'll just keep enjoying my vintage Lambda, even with its significant alterations like the thicker diaphragm (2.5 microns vs. 2.0 microns originally; I don't know why whoever rebuilt these went for a thicker one, instead of the same or possibly even thinner) and the lack of the original mineral wool. That atmospheric, transparent sound is too delightful. (But if these fail for any reason, my wallet is gonna hurt really hard as I attempt to get my hands on an SR-202 and a driver unit with Pro bias...)










