the problem of "Agave Electrostatic Amplifier"

[Omega_ELS]

details ->

scheme ->

psu ->

>Max output voltage: 280Vrms

It doesn't seem like a very powerful thing.

What do you think?

 

 

 

[kevin gilmore]

highly similar to hev70 sennheiser amp. and by that i mean n-channel fet as current source into another n-channel fet with grounded gate drive.

sennheiser amp  single high voltage + 600v.

this amp +/-400v (initial guess on current way off)

output device is infineon imw120r350m1  which has input capacitance of 3460pf.  kind of high. there are better parts to use. like this one. C3M0900170D which has input capacitance of 202 pf. 

calculated output current is about 12.5ma and about 5 watts per heatsink.  going to get fairly hot.

mc33078 opamps perform very differently inverting and non-inverting.  koss esp950 uses the same part in a very different way. much better ways of doing the unbalanced to balanced conversion.

power supply about as basic and cheap as possible.

the chinese will do this for less than $500. which means that this is infinitely better than the topping eha5.  likely sounds better too.

Edited 37 minutes ago by kevin gilmore