OTL Asylum

OTL, Output Transformerless Amplifier User Group.

Return to OTL Asylum

Message Sort: Post Order or Asylum Reverse Threaded

Tube rolling Atma-Sphere M-60

68.205.7.110
Posted on December 28, 2016 at 09:53:38
bigamphunter
Audiophile

Posts: 1
Location: Space Coast, Florida
Joined: June 29, 2014
 Recently did a full tube roll on my M-60's. Ken-rad 6sn7's and RCA 6as7g's.
Not a night and day difference, but everything is better. Lots more dynamics,
increased micro detail-better sense of presence. There used to be collapse
of sound stage on dynamic peaks-no more and clearer. Well worth the investment
I was lucky to find all
NOS tubes. System is bi-amped with ribbon tweaters

 

Hide full thread outline!
    ...
RE: Tube rolling Atma-Sphere M-60, posted on December 31, 2016 at 00:40:13
Ogh
Audiophile

Posts: 26
Location: Oslo
Joined: November 5, 2004
 Same here. I changed the 28 output tubes in my Ma-1s to RCA 6AS7G. I gave them 72 hours of burn-in (standby). 2 of the 28 failed quite soon, but the rest have been running for close to two years with no problems. I consider changing some of the driver tubes too.

 

I'm quite happy with the Tung-Sol roundplate 'N7s..., posted on December 30, 2016 at 16:17:03
jeffreybehr
Audiophile

Posts: 5707
Location: Phoenix, Arizona
Joined: December 10, 2004
Contributor
  Since: December 13, 2004
 ...I fell in love with years ago. I accumulated a couple dozen, and this year, with my new M60 Mk.3.3s I'm using them again. I use A-S's gain-reduction plug in one spot so only 3 TSRPs per amp.
photo 2016Jun08_RC amp_2000w_zps9s1hjral.jpg

For outputs, I still have LOTS of Winged-C 6H13Cs from the couple boxes I bought this summer.

 

RE: Tube rolling Atma-Sphere M-60, posted on December 29, 2016 at 05:57:16
throwback
Audiophile

Posts: 762
Location: Colorado
Joined: December 8, 2003
 Yes. My Atma MA-1 Silver Edition amps also got a Christmas present: a set of Chatham 6as7G output tubes. More transparent, smoother, wider soundstage. Lovely, just lovely.

 

Page processed in 0.026 seconds.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]