2. amps-preamps
  3. 1251822368

Zero Feedback: Atmasphere vs. BAT

Do Atmasphere and BAT have similar sound because they both use low or zero feedback tube designs?

I am considering these amps for my 8 ohm 89db Spendor S8e's.

I am looking for smoothness, Transparency and sound on the warm side. I am leaning toward a BAT VK75, it can be upgraded and it runs AB instead of the hot class A. You can also upgrade to VK 150. From what I can gather the 140 watt MA1 is superior in the area of dynamics, that would be the main reason to go Atmasphere to the best of my knowledge as OTL is super fast and more of a rock out style.

I am looking for used gear that can be supported over the long term by a good company.
128x128scottlanterman

Showing 2 responses by marakanetz

marakanetz's avatar
marakanetz
5,473 posts
 
Zero feedback OTLs ???
marakanetz's avatar
marakanetz
5,473 posts
 
I know VK as an engineer. No doubt about him. They use differential driving stages(balanced circuits) and classic push-pull output design that really doesn't need deep negative feedback just like most of the tube amps.

I also know that to achieve transformer-less low tube output impedance, you need deep negative feedback.

I'm not looking to buy Atmasphere equipment since it's not only within my budget, but it also too much heat, too much tubes to roll(upkeep) and lots of idle power consumption.
More to discover