STAX HISTORY PART 5
STAX HISTORY PART 5
Stax SR-Lambda Series
Part of what makes the early SR-Lambdas represent Stax’s “Old School” sound concept is this. Beginning with the SR-202 Basic, the “newer” versions feature a little more “V”-shaped tuning than its predecessors. The 1987 SR-Lambda Signature is one of my favorite cars. Additionally, the SR-404 Limited and SR-404 Signature are top-notch variants. The Stax SR-507 was purposefully left out since it serves as a precursor to the more recent models in Stax’s Lambda series, which will be discussed in part 6.
Stax SR-Lambda
Released in 1979 with a “Normal bias” of 230V and a diaphragm thickness of 2.0 µm, the Stax SR-Lambda NB (Normal bias) model marked the start of the SR-Lambda adventure. Its driver is identical to that of the SR-Sigma NB, and it, too, is all black—with silver plugs and a cord. With its deep bass-free reproduction, outstanding midrange, and airy treble, it provides a sonically neutral listening experience.
Stax SR-Lambda Pro
All succeeding Stax Lambda models used this model’s 580V “Pro bias” when it came out in 1982. Importantly, Stax raised the bias from “Normal bias” to “Pro bias” to appease the technicians at Daimler Benz, who were looking for a way to cancel out low-frequency noise in the car’s interior. Similar to the SR-Lambda NB, the SR-Lambda Pro has a black color scheme and a diaphragm thickness of 1.5 µm. Compared to the “Normal Bias” model, it has a little stronger bass and a more open and airy sound profile.
Stax SR-Lambda Signature
This device is notable for its 1987 release and its thin diaphragm, measuring only 1.0 µm. It may have been “bright” when it first out, but the sound is actually enchanting and expansive. Everything from the headband and yoke to the ear cushions and cord is brown with gold-plated connections. Its rarity is a result of the small production volumes.
Stax SR-Lambda Pro Classic
An updated version of the SR-Lambda Pro with a new cable and headband debuted in 1992 to commemorate the product’s tenth anniversary. The 2.0 µm thickness is the diaphragm. It produces an open sound that is comparable to that of the original, but with somewhat more bass. It went by another name in Japan: the “SR-Lambda Spirit.”
Stax SR-Lambda Nova Series
Before going bankrupt, Stax made a final run of models in the Nova series. Three separate models in the same series define them.
Stax SR-Lambda Nova Basic (1994)
A 2.0 µm diaphragm thickness is used in this entry-level variant. The sound is well-balanced and has a solid midrange.
Stax SR-Lambda Nova Classic (1994)
It provides a slightly broader soundstage, with a soft treble and decent bass performance, thanks to its 1.5 µm diaphragm thickness.
Stax SR-Lambda Nova Signature (1994)
The driver is identical to that of the Nova Classic; however, the housing, headband, ear pads, and cable are brown in color. Recognized for its spacious soundstage and neutral, balanced sound.
Stax SR-202 Basic (1999)
Following their bankruptcy, Stax made a triumphant return with this model. With a 1.5 µm diaphragm thickness, it provides a well-rounded sound characteristic that downplays the “V” form.
Stax SR-303 Classic (1999)
Quite similar to the SR-202 Basic, however, the cable and ear cushions are different. It keeps the bass in check and the treble open.
Stax SR-404 Signature (1999)
An updated version of the SR-303 Classic with the same driver and upgraded ear cushions and cord. It has excellent bass and midrange and produces a light, well-balanced sound.
Stax SR-404 Limited (2009)
In honor of SR-Lambda’s 30th anniversary, this limited edition set features a silver-plated wire with gold-colored insignia and real leather ear pads. Its sound is more expansive than that of the SR-404 Signature, with deeper bass, a great middle, and a light, airy treble.
Stax SR-207 Basic (2011)
It offers a well-rounded sound with solid treble and bass, however it isn’t as light as earlier models, thanks to its 1.35 µm diaphragm thickness.
Stax SR-307 Classic (2011)
Very much like the SR-207 Basic, but with a new set of earbuds and a different cord. The bass is a little better, and the treble is more open.
Stax SR-407 Signature (2011)
Similar to the “07” series, it uses the same driver. The sound is wide and has improved dynamics.
