Audio Asylum Thread Printer
Get a view of an entire thread on one page
|For Sale Ads|
In Reply to: RE: Stax Amps posted by sisterray on September 14, 2020 at 09:14:23
I have a beloved pair of SR-404s I have had for years. Also a pair of SR-007 Omega Mk.2s and an old pair of SR-4 electrets. Also the Koss electrostatics as well.
So I have used...the Stax 006t amp, a McAlister amp, and the Woo Audio energizer WEE with my speaker amp, which is a MFA D75 power. The MFA is basically a push pull class AB amp running 2 pairs of 6550/KT88 tubes.
So...I could never get the volume with SR-404s with the Stax amp. When I went to the McAlister amp, it was a big difference with the 404s. Much more detail, more "air" and you can run them a lot louder. However, I still didn't seem to have enough thump to really drive the SR-007s with this set up, which are regarded as one of the hardest e-stat phones to drive, can't get the volume.
Then came the day when I plugged in the WEE energizer to my MFA amp; it was night and day ! With the SR-007s the volume is there, and there is more detail, more air, more bass, more fat in the midrange,more imaging, actually, these headphones sound better with this set-up in every way in every aspect.
Also to my surprise, the SR-404s sound even better with the WEE/MFA set up; more detail; more air, for example.
So all of this leads me to think...perhaps for best results with SR-007s you really need a good amp, based on 6550/KT88 tubes ?
I know there are a number of companies making amps for e-stats...that seem to all based on the EL34 tube. Isn't the 6550 tube much more powerful, in the appropriate circuit with the adequate power supply ? I am sure some of these sound good...but can they really drive the SR-007s to their potential ?
I don't really want to take a chance and pick up a EL34 based amp, which I am sure would be good, but find out it doesn't quite drive the SR-007s the way they need. So for now I will stick with my current set up with the WEE and the MFA.
Good to know your experiences.
The very long-running Stax thread on Head-Case often features a "boutique" amp that is critiqued, usually savagely. If some of the "experts" (and some of them do seem to know what they're talking about) are right, there's some equipment out there that's rather shitty in construction & potentially dangerous in operation. We are strapping around 600V to our heads, after all.
"'Cause when love is gone, there's always justice./And when justice is gone, there's always force./And when force is gone, there's always Mom. Hi Mom!" Laurie Anderson, "O Superman (For Massenet)"
"there's some equipment out there that's rather shitty in construction & potentially dangerous in operation"
The McAlister falls into that category.
Post a Message!
This post is made possible by the generous support of people like you and our sponsors: