Phono Stage - The great analog tragedy


In the world of analog playback, there is an interesting observation. There has been tremendous innovation in the field of 
Turntable - Direct, Idler, Belt
Cartridge - MM, MC, MI
Tonearm - Gimbal, Unipivot, Linear Tracking

For all of the above designs we find some of the best reference components designed in the 50s, 60s, 70s and 80s. Most of the modern products are inspired from these extraordinary products of the past. But when it comes to phono stage, there is hardly any "reference component" from that era. They just standardized RIAA curve for sanity and left it. Manufacturers made large preamps and amps and allocated a puny 5% space for a small phono circuit even in their reference models, like a necessary evil. They didn’t bother about making it better. 

The result? It came down to the modern designers post 2000 after vinyl resurgence to come up with serious phono stages for high end systems. Unfortunately they don’t have any past reference grade designs to copy or get inspired from. Effectively, just like DACs, reference phono stages is also an evolving concept, and we don’t have too many choices when we want a really good one which is high-res and natural sounding. Very few in the world have figured out a proper high end design so far. And most of the decent ones have been designed in the past couple of decades. The best of the breed are probably yet to come.  

It is a tragedy that our legendary audio engineers from the golden era didn’t focus on the most sensitive and impactful component, "the phono stage"

pani

Showing 1 response by dynacohum

I remember attending a Boston Audio Society meeting in the late 70s at which Tomlinson Holman spoke on what prompted him to re-think his ideas on phono preamp design, which led to the Advent 300 receiver's much ballyhooed MM section, and later the full-blown version in the Apt/Holman preamp.  

He was testing an unnamed "standard solid state preamp" versus that of a Dynaco PAS tube preamp and found that the HF overload characteristics on the tube preamp were far better.  He then focused on designing a SS circuit that matched the characteristics of the PAS closely, which went into the Model 300.  Curiously, this vignette is absent from the excellent history linked above by djspinner...West Coast bias?