CPC indexing code H03F2200/549 refers to "the amplifier comprising means to emulate the vacuum tube behaviour". There aren't many patents but some interesting ones: https://patents.google.com/?q=(H03F2200/549)
Have fun!
Cabirio
Have fun!
Cabirio
I already have enough tube sound on records from the 1960s and early 1970s. It is authentic too. My solid-state equipment reproduces tube sound perfectly. 😉
Ed
Ed
It's easy to have transistor circuit to produses dominant secon harmonic, even 0.5%, look here: https://www.diyaudio.com/community/...ne-non-gnfb-preamp.395695/page-2#post-7591547
Damir
Pretty complicated solution to solve a "problem" that does not really exist. Sort of like AI and IOT !
Complexity increases , reliability goes down ..... everything become proprietary $$$$ ....
OS
I have been tempted to use the JDS Labs Element III as a preamp because it has customizable 2nd and 3rd harmonics.
https://jdslabs.com/product/element-iii/
https://jdslabs.com/product/element-iii/
Oh , I forgot about them. The Mac 's really refined output trafo tech. All those years of making killer (big $$) valve amp.
If I ever get around to building a real Valve amp , I would reverse engineer a Mac design. Try to find some orphaned Mac trafo's , aswell !
OS
That is the fun with solid state.
No extra iron.
With old Quasi Outputs and very simple
second gain stages. The harmonic profile
more than good.
As far as what it is "missing" to not yet be
full tube emulation.
Is basically peoples imagination and what they think it needs.
Sound remains the same.
No extra iron.
With old Quasi Outputs and very simple
second gain stages. The harmonic profile
more than good.
As far as what it is "missing" to not yet be
full tube emulation.
Is basically peoples imagination and what they think it needs.
Sound remains the same.
You may have noticed that there are no driver transistors. It is often assumed that emitter followers have a low output impedance. In actual practice, the output impedance is the impedance at the Base divided by Beta. A single VAS transistor with a bootstrapped current source can have significant output impedance, perhaps several K. Feedback can reduce the output impedance, but that goes out the window when the amp clips, much like a tube guitar amp which have damping factors in the low single digits.
There is no need to waste time with these... There are digital players that imitate the sound of a tube amplifier 😉
The imitation isn't good enough for professional players. They still prefer tube amps by a wide margin.
I still think tube amps are a waste of time. I think the best sound is a well made 3rd harmonic suppressed BJT. Besides, the most important thing is what you listen to and what you convert to analog. There is no point in wasting more water to wash the mud than the clean water you will obtain. The funny thing is to choose new generation speakers and choose the amplifier from the 1700s.
Tube amps are FUN to build.
Jet skis are fun too. Also waste time, money, and fuel. Everything fun does, why should tube amps be any different?
Jet skis are fun too. Also waste time, money, and fuel. Everything fun does, why should tube amps be any different?
It's just funny how tube fans think they're listening to the best sound. They may also be riding in cars running on LPG.
