Atma-Sphere Tube Amplifier Forum

Learn from Ralph Karsten the Atma-Sphere founder/designer and discuss with fellow owners.
Atmasphere
What an OTL is, and why you should care
  • Sticky
  • 53
Replies
53
Views
20,134
Atmasphere
Atmasphere
L
What is it about direct heated triodes?
  • 12
Replies
12
Views
243
Atmasphere
Atmasphere
jeffreybehr
Oh-m'-god--bought a pair of MA-1/3.1s thru USAudiomart.
  • 28
Replies
28
Views
3,287
jeffreybehr
jeffreybehr
jeffreybehr
Improved some parts in my Atma-Sphere M-60/3.3 poweramps
  • 17
Replies
17
Views
2,522
twodolphins
twodolphins
O
Atma Model M-60 MkII - The missing 407
  • 0
Replies
0
Views
454
O
Olindian
M
MA-1 Lumen Reduction for the Red/Yellow Lamps
  • 7
Replies
7
Views
621
Atmasphere
Atmasphere
jeffreybehr
And now it's the MA-1s in the system and with fewer output tubes
  • 2
Replies
2
Views
700
jeffreybehr
jeffreybehr
R
Differences Between Chinese and Russia 6AS7 Tubes
  • 13
Replies
13
Views
13,385
F
ferrox
Ron Resnick
Atma-Sphere MA-2 Amplifier
  • 9
Replies
9
Views
4,991
M
MrC.
jeffreybehr
Reinstalled M-60s in the system, driving Serenity Super-7s
  • 1
Replies
1
Views
767
jeffreybehr
jeffreybehr
R
6080 Tubes or Alternate to the 6AS7 Tubes
  • 1
Replies
1
Views
5,455
jeffreybehr
jeffreybehr
R
What Cables Are You Using With Atma-Sphere Gear & Why?
  • 19
Replies
19
Views
10,799
tima
tima
F
Atma-sphere MA-1 MK 3.3 - Fuse Replacement Vs. Upgrading Power Cord
  • 0
Replies
0
Views
2,980
F
ferrox
C
Anyone hear the MA-3?
  • 13
Replies
13
Views
13,543
F
ferrox
Brian Walsh
Atma-Sphere MP-1 Mk 3.3
  • 12
Replies
12
Views
12,388
F
ferrox
Atmasphere
New preamp called the Ultraviolet!
  • 16
Replies
16
Views
18,457
Brian Walsh
Brian Walsh
Gregadd
New Atma-Sphere amp
  • 7
Replies
7
Views
8,037
Atmasphere
Atmasphere
Gregadd
Atma-Sphere Cutting Lathe
  • 32
Replies
32
Views
20,685
MylesBAstor
MylesBAstor
Gregadd
Last of the cowboys
  • 20
Replies
20
Views
14,135
Brian Walsh
Brian Walsh
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  • What’s Best Forum is THE forum for high-end audio, product reviews, advice and sharing experiences on the best of everything else. A place where audiophiles and audio companies discuss existing and new audio products, music servers, music streamers and computer audio, digital to audio converters, turntables, phono stages, cartridges, reel to reel, speakers, headphones, tube amplifiers and solid state amplification. Founded in 2010 What's Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals we enjoy learning about new things and meeting new people and participating in spirited debates.

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