New First Watt product at Axpona 2023

[Zen Mod]

it can be nothing else than regular silicone sheet, squeezed manly



........ or another superduperkosherthingie, only Pa knows about, so Greedy Boyz adding another necessary ingredient in Chase to Nirvana

 

[rickmcinnis]

Does not look like the flat side of the THF51 is actually touching the heatsink. Looks like there is a spacer/washer on the fastener between the heatsink and THF51 with this goo between them, lots of goo.

I stared at it awhile. I might have started hallucinating but I do not think so.

 

[tonyEE]

and Desmond said - it'll be SIT 5 Monos

I like it; Rich Pa is (easily) Happy Pa ..... more breadcrumbs for Greedy Boyz

I like pain. ( I wonder if You Know Who might bite again? )

I still have Tokins in the closet.

Looking at the SIT-4... hmm... was ZM ahead with the Sissy? To be honest, the Sissy is reliable and sounds really good. What does the SIT-4 give you over it?

Perhaps a more reliable and powerful SIT path ahead would be mono block Sissies?

 

[Zen Mod]

it can be nothing else than regular silicone sheet, squeezed manly

with goop, bulging and playing thingies with my brain

 

[Ben Mah]

I still have Tokins in the closet.

Build a Singing Bush ( a high powered SIT-4 like amp), or two for stereo.

 

[tonyEE]

Like Macho SIT?

 

[Ben Mah]

Zen Mod's Singing Bush with THF-51S: https://www.diyaudio.com/community/threads/the-singing-bush.349248/

 

[generg]

The complete review of SIT-4 at 6moons is out!

https://6moons.com/audioreview_articles/firstwatt-sit4/

 

[Zen Mod]

so, just to summarize - 2015 BAF SIT amp, "2SK77B 50W VFETY AMPLIFIER", finally fruited as direct production piece, in two forms:

• Mini, as SIT 4
• regular size, as upcoming SIT 5

Happy Pa, Rich Pa, happy Pa.

ZM OMMMMnihappy

 

[generg]

Happy Generg, poor Generg, rich GenergthanksPa, happy Generg

not to forget OMMMMnihappy ZM the one and only Official Court Jester

:--))

 

[Zen Mod]

OMMMMMMMMM

to that

 

[Ben Mah]

6moons.com coming next: First Watt SIT 5:

 

[generg]

https://6moons.com/audioreview_articles/firstwatt-sit5/

but only a few words still, no Review.

 

[Zen Mod]

naah.......... no pics

 

[delecoy]

FirstWatt SIT 5 heat signature:

I’m one hot amplifier away from having to install a supplementary air conditioner in the listening area 🙃

 

[Mark Johnson]

Here in the Forums: Fan inside audio chassis: variable speed, temperature controlled, analog - No PWM

 

[delecoy]

That’s awesome Mark. I need that with a mini-split attached 🙂.

All jest aside…I’m looking forward to building one of the SIT amps next, and also just installed a slightly over-sized ac earlier this year.

Texas is too hot now.

 

[August]

Interesting, I would really like to try out the 4 or 5's. I have the speakers for them, but so far I have preferred my Pass XA25 to my SissySIT. In short, more attack and rythm versus the spooky qualities. Might just be that my execution of the Sissy is lacking or a personal preference of my ears. Willing to investigate further.

 

[Ben Mah]

The XA25 is a much more powerful amplifier according to testing by Stereophile. It is also 3rd harmonic distortion dominant into 8 Ohm. That could be factors in difference in sound.

https://www.stereophile.com/content/pass-laboratories-xa25-power-amplifier-measurements

 

[August]

That's what Stereophile says and I'm not disagreeing with Atkinsons measurements, but then the INT-25 with the same exact circuit just with a front-end strapped to it is suddenly 2nd harmonic? Which I guess it is, I had one of those and it was magical. I think the 3rd or the 2nd are both a very slight sprinkling of aroma so to say and not very dominant in the common sense of the word.
The interesting thing to me is that XA25 has quite a low output impedance meaning that the 'grip' on the speakers (damping factor) is higher, but with wideband, OB, or other high sensitivity speakers a low damping factor seems to be preffered. This is why I would like to test the SIT-4 or SIT-5. Or build a follower with my Tokins 🙂