[Paladin79]

Psvane (pa-van) They are works of art.
EL-34 PH Matched Sextet originally purchased for RAAL VM-1a. And 6SN7 T ll Matched Pair. For reasons previously mentioned I'm leaving the hobby.

PM me if you get a chance,

 

[Zachik]

just send him a PM, you know you want those...

What if I am just asking for a friend?

 

[artur9]

Some here might suggest a 70% solution, but each still has an optimum value. Or so I'm told.

I thought the recommendation was for a 7% solution. 70% might be lethal? @KoshNaranek can you help?

 

[LobalWarming]

@FLTWS - prices would be useful...

Prices are so gauche. They're works of art. Can't put a price on that... https://www.christies.com/events/americana-week/what-is-on

 

[SuperRoo]

@FLTWS - prices would be useful...

This is where I bought mine. https://www.vivatubes.com/new-matched-quad-4-psvane-6sn7-uk-black-plate-gold-pins-vacuum-tubes/

 

[Paladin79]

Another totally off topic question for all you schiitheads A recent "mad science" projects out of the warped minds of myself and wife consists of a diy truck camper to fit our dodge dakota. Enjoying weekends out on forest service roads, the coast etc.



Looking for a small bluetooth speaker, USB-C rechargeable - not needing earth shaking volume, good balance preferred ....

Very cool indeed!!!

JBL pulse is a great little bluetooth speaker. New model has lot of cool lighting effects

I was looking for an upgrade on an Infinity I have and in parenthesis they say JBL.

 

[theeclone]

Chord for sure does that. I didn't get the impression that the MCB uses much more than a few hundred taps, but that's just an impression I've gathered.

Pretty sure the collection of links you posted contains one from Jason stating it's more taps than that. I'll try to dig it up.

 

[macdonjh]

If anybody wants some foundational knowledge that helps to understand interpolation filters like Schiit's Megacomboburrito filter, I found this guy's videos really helpful. You just need a bit of maths background, but the nice thing about these videos is you don't need to have learned differential equations (I never got that far in calc), because with FIR filters you're dealing w difference equations, which are easier to understand.

Based on Mike & Jason's posts, I believe Megacomboburrito uses a FIR filter, with 10's of thousands of coefficients, or "taps". As somebody mentioned (can't recall who that was. Oh well...), a typical way to go about making an interpolation filter is to add zeros between the original samples as the first step. Then a FIR filter can essentially transform them into non-zero values, through successive delays and multiply-accumulate operations using the chosen coefficients. I wouldn't be surprised if Schiit was using a technique other than this "zero stuffing", but there's no way to know for sure about that at this point, unless I've missed some of their posts. This guy's videos step through the process of implementing a FIR lowpass filter:



It seems that part of, if not most of the secret sauce in the MCB filter is in how the FIR filter coefficients were chosen. You can use something like matlab to generate filter coefficients for you but you'll end up with a filter that probably sounds nowhere near as good as MCB. Mike et al came up with their own way to generate the coefficients they needed for bit perfect interpolation, optimized in both the time and frequency domains. And they've programmed sharc DSP chips, presumably mostly to run the multiply-accumulate operations to implement the FIR filter with its many taps, though there may he more to it than that when it comes to what the sharc chip is doing.

I'll work on the architecture for MCB-II after dinner tonight. I'll post the results in the morning.

not

 

[theeclone]

Chord for sure does that. I didn't get the impression that the MCB uses much more than a few hundred taps, but that's just an impression I've gathered.

Here it is: https://www.head-fi.org/threads/sch...robable-start-up.701900/page-90#post-10629320

 

[Plautus001]

Another totally off topic question for all you schiitheads A recent "mad science" projects out of the warped minds of myself and wife consists of a diy truck camper to fit our dodge dakota. Enjoying weekends out on forest service roads, the coast etc.



Looking for a small bluetooth speaker, USB-C rechargeable - not needing earth shaking volume, good balance preferred ....

UE Boom has worked for us for 5 years

 

[KoshNaranek]

I thought the recommendation was for a 7% solution. 70% might be lethal? @KoshNaranek can you help?

If I understand the question correctly, you are asking the toxicity of 70% or 140 proof alcohol. Taken straight in small quantities it should not kill but very high alcohol concentrations taken repeatedly can lead to Barrett's esophagus and esophageal cancer.

If the question was tongue in cheek then I apologize for being such a straight man.

 

[Pondoro]

Here it is: https://www.head-fi.org/threads/sch...robable-start-up.701900/page-90#post-10629320

"This isn't Burger King, this is math." I'm gonna use that at work some day. Corporations are kinder and gentler now, I may get a counseling session.

 

[theeclone]

"This isn't Burger King, this is math." I'm gonna use that at work some day. Corporations are kinder and gentler now, I may get a counseling session.

Still trying to wrap my head around how to calculate all those taps! Guess that's why I never worked at Rand Corp.

 

[FLTWS]

To any interested party: The Psvane EL-34's were purchased direct from China, the rest of the Psvane's from Grant Fidelity in Canada.

 

[rkw]

Another totally off topic question for all you schiitheads A recent "mad science" project out of the warped minds of myself and wife consists of a diy truck camper to fit our dodge dakota. Enjoying weekends out on forest service roads, the coast etc.

Reminded me of Tyll Hertsens from the InnerFidelity website, who was well known and influential in the audiophile headphone community when he gave it up to go on the road. He was featured in this video recently.