Balanced audio technology VK500/1000: "Single-Ended Bridge" Topology, 450W into 4 Ohm
A typical solid-state ampliﬁer
will have four or ﬁve gain stages, with a feedback loop traversing these same
stages to correct the signal. The VK-500 uses only two gain stagesówithout
global feedback. Unusually direct for any ampliﬁer, this purist signal path is even
more surprising in a design of such high power. The ingenuity of the signal
path is complemented by a unique single-ended bridge topology that allows the
use of superior N-channel MOSFETs in both driver and output stages. The
result is a clear, open sound that breathes life into music.
This sounds like a design from Mr. Nelson Pass.
Also the review about
Balanced Audio Technology VK-500 Reviews
Perhaps a transition from a "ZEN"-topology to a "CSPP" (Circlotron)??
Who knows more about BAT's topology?
Yes , it is always employed Balanced Bridge / PPP ( Circlotron ) topology inside of this ( Viktor`s ) BAT SS or Tube PP Amp .
are anywhere schematics for download?
like krell, they don't release schematics. good luck!
Had a Pr ... not a fan .....................:(
The phrase "balanced single-ended", first used IIRC by Bel Canto, and an
oxymoron if there ever was one, is nevertheless pretty descriptive.
It is likely:
1) Circlotron, either Common-Drain or Common-Source.
2) Two conventional single-ended output stages operated in balanced mode,
either Common-Drain or Common-Source, biased by a CCS or variable
3) If the product is advertised as lacking global feedback, then it very likely
is a Common-Drain version of 1 or 2
(Fet pin references. Your pins may vary)
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