Hello All,
What solid state brands are considered high bandwidth(Besides Spectral) ?In addition, what exactly does that mean to me as a listener ? It's probably a loaded question but, I want to make sure I'm comparing like products.
For example, it is my understanding that the design of Spectral, Dartzeel, Audionet and Soulution are all high-bandwidth designs whereas my Pass amplifier is not.
Thanks
Your correct
Soulution is high bandwidth with a lot of feedback
Spectral I believe also
The issue is stability due to oscillation
Goldmund aim to have minimum phase shift, which is only achievable by high speed and bandwidth
Many of the things done to stabilise the amplifier have a habit of killing either the speed, or phase accuracy in order to make it stable
So it's a real balancing act, or very very complicated
Goldmund went down the balancing act route to avoid pitfalls, but requires highly matched transistors
Soulution use a very fast and complicated implementation .....3000 parts anyone
Of course if your pre isn't as fast well you just added a low pass filter to the situation
I don't know much about the spectral as they are not readily available out here in Oz
But my understanding is they remove the Zobel network for high bandwidth which means careful cable matching is required
Bakoon is also a high bandwidth design, but uses current rather than voltage with the satri circuit, this also has no Zobel network, and achieves stability via current mirrors which in a way is a form of very fast feedback
However they all sound quite different from each other
Ch precision is said to be a next generation version of the Goldmund, but the truth behind this I cannot verify, though the engineers worked for Goldmund, and Alan Tafffel in his review who owns Goldmund amplifiers as much as said it...