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- Jan 9, 2003
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Yep I remember hearing the Stax 727a amp, and it was like a bad joke compared to any of KGST/KGSShv/BHSE. Having a backup isn't a bad idea. I really like KGSShv for that since IMO it's the first amp (as per affordability) capable of driving the heck out of 007 and ES1a (these have the exact same sensitivity to my ears). So I'll probably always keep around my old as dirt 500V onboard IXYS KGSShv -- I'm quite fond of it and tonally it's more similar to T2 than all other KGSShv flavors (again IMO).The 007 and SGL Sr. are the hardest to drive stats I have ever owned, most other stats aren't in the same boat. The 007 is just ridiculous. I wasn't a big fan of it until I got the T2, it easily made the biggest difference of any headphone. I think the CRBN after those two is next in line, and then the x9000 (which really, isn't that hard to drive).
That said, I've always had reserve stat amps on hand in case anything happens to my main amp. Over the past few years, I've had the SRM1-MK2 and the T1s. Even with the 009, there is no mistaking the difference in dynamics with a better amp. There is a quantum leap in performance between any stax amp that I've heard (fyi I have not tried the 717 or T2) and the BHSE for example. I mean quantum leap, no hyperbole (clearly this is hyperbole lol). I simply would not own a TOTL stax headphone without one of the notable, capable amps.. which is a bit different from my perspective of dynamics. I.E. an affordable GSX Mini or similar can power just about anything decently.
And exactly -- traditional dynamics (moving coils) are so freaking easy to drive. A GSX mini will have power reserves you would never even dream of approaching there. I'm not as familiar with the hard to drive planars, but the mini still drove the heck out of Susvara when I had them.