F8

[wdecho]

F8 and other videos

YouTube

 

[tubesguy]

Oh, no, another amp to wait for.

 

[Zen Mod]

damn

now I have more work to do

to draw Babelfish F8 , and amp capable to drive 0R2

wait, I already have few welders in my garage

box ticked, back to reading some funny books

 

[astromo]

Nice .. Such a pleasure to hear the laid back wisdom of the master.

I'm looking forward foo part 2.

 

[Bigun]

Interesting - design is 5 years in the making. It’s single ended JFET input, J2 like output stage using the SiC SIT’s. 2nd Harmonic dominates. More parts than the F7, with a CFA topology. 20W output into 8 Ohms, 14W to 15W into 4 Ohms.

 

[Michael Rothacher]

Awesome! Can't wait for Part 2.

 

[Soundhappy]

Interesting..J2 like output stage using the SiC SIT’s..

Not SIT's inside this time but using SemiSouth Silicon Carbide Power Jfet's.
Long life F8 ! Thanks for interview

 

[Tom V]

Didn't Nelson have an F8 at Burning Amp '19? Mario would know.

-Tom-

 

[Russellc]

Maybe it will prove to be "Ultimate J2" and regular J2 soon revealed? Me greedy. As rare as Semisouths are for us, Nelson's stash is sufficient to support more than one amp I guess...but I can wish. I have two quads of Semisouth,, one has been waiting for years for J2 release, I guess I know what I am saving other quad for, if quad is enough!

Russellc

 

[Dennis Hui]

Yes, there was an F8 prototype at BA2019.

 

[Zen Mod]

J2 is for Sissies

 

[Russellc]

Oh, no, another amp to wait for.

At least there is an upside. I'm getting a large enough pile of amps that all systems covered...can now determine a few of them are working at cross purposes and a few can be rebuilt into new ones without cost of chassis and power supply.

I already repurposed F6 into Aleph J as I felt for me in my systems, that it was very similar to F5. F5 now up to repurpose into F7 clone, or J2 clone. The F5 and F6 will return, F5 with P3 this time, and F6 with Semisouth or Toshiba outputs and resistor mods to alter 2nd order distortion.

Oh well, I'll find another parts box to put future F8 parts in...

Russellc

 

[codyt]

...F6 with Semisouth or Toshiba outputs and resistor mods to alter 2nd order distortion.

Oh well, I'll find another parts box to put future F8 parts in...

Russellc

I initially thought the F6 was a little too dry(?) for me, but messing with the source resistors and putting a BA3 FE in front has made it one my of my favorites

 

[Zen Mod]

any of Papamps is good enough to be your favorite, if you mess with it enough

most important thing he's giving is "how to mess with", not bloody particular amp

 

[codyt]

Very true. And if I didn't have people like you and pa to show me how to mess with it, I'd probably burn down the house

 

[Zen Mod]

blame Pa (only), as always

 

[Russellc]

I initially thought the F6 was a little too dry(?) for me, but messing with the source resistors and putting a BA3 FE in front has made it one my of my favorites

Oh it's a fine amp, my preference goes to other ones. But that's the whole point. Different flavors and attributes are preferred by different listeners.

I will return to F6, in slightly different tune.Same with F5. F5 is whole right now, but may turn into F7 clone or J2 clone. I feel as to my builds, F6 and F5 were cut from same sonic cloth. I feel BA3 better to my tastes, does what they do plus warmer side. Aleph J is a beauty as is M2. I feel like SissySit will be a fav once done. I just grew away from F5 and F6 sound. Nothing wrong with one's preference either way.

Russellc

 

[codyt]

Well said. One thing I do know for sure - they’re all impressive!

 

[Zen Mod]

naah

M2 Rulez Them All!

All Amps Are Equal, Just M2 is More Equal!

 

[wdecho]

Oh it's a fine amp, my preference goes to other ones. But that's the whole point. Different flavors and attributes are preferred by different listeners.

I will return to F6, in slightly different tune.Same with F5. F5 is whole right now, but may turn into F7 clone or J2 clone. I feel as to my builds, F6 and F5 were cut from same sonic cloth. I feel BA3 better to my tastes, does what they do plus warmer side. Aleph J is a beauty as is M2. I feel like SissySit will be a fav once done. I just grew away from F5 and F6 sound. Nothing wrong with one's preference either way.

Russellc

The are no culls, just different taste for different folks. My taste in FW clones is much as yours Russel. F5, F6 and my version of F7 not to my taste with my horn speakers. From what I gather a lot depends on the kind of speaker one has on which clone one likes best. Both the BA-1 and BA-2 with the BA-3 front end are exceptional amplifiers often overlooked for something newer. The V-fet is another one of my favorites. These are the 3 I listen with most in SS.