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I know active high and low pass filters are very accurate and generally didn't need a zobel circuit but would a passive high and low pass with a zobel circuit provide a more nature sound than actives or actives the only way to go?

Also for you tube heads I getting into circuitry mainly audio filters, power stabilization and pondering getting into diy amplifier building. I am wondering are there any tube pre amps that can convert high level input to low level output and what type of distortion would be seen at say 6v output Max on the low level line. I ask cause I thought I read around tubes produce distortion regardless a and if the case can it be lower.

Also I was reading about class a/d amplifiers but can locate one or a circuit diagram to compare with a class a and class d to see the implementation of hybrid setup

I know active high and low pass filters are very accurate and generally didn't need a zobel circuit but would a passive high and low pass with a zobel circuit provide a more nature sound than actives or actives the only way to go? Also for you tube heads I getting into circuitry mainly audio filters, power stabilization and pondering getting into diy amplifier building. I am wondering are there any tube pre amps that can convert high level input to low level output and what type of distortion would be seen at say 6v output Max on the low level line. I ask cause I thought I read around tubes produce distortion regardless a and if the case can it be lower. Also I was reading about class a/d amplifiers but can locate one or a circuit diagram to compare with a class a and class d to see the implementation of hybrid setup

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[–] • 0 pt

forgot to respond to ya sorry. i did get a few things capable from it after examining butler audio tube amps but in all couldn't agree to the price to build it. alot of things made it a challenge and mostly to me that was needing digital means to controll voltage as simple resistor networks or small cap banks wouldnt let me get the ideal configurations to accomplish my goal and the transformer was huge

[–] • 1 pt

transformer was huge

Yep. Welcome to yesterday, it's why we live in today instead.

[–] • 1 pt

still prefer the clarity of tubes anyday. might try to source out a butler audio tube amp and just use a dc to 110 converter and enjoy. however i have decided which way im going to go with my trucks sub bass and will just build a 3d polygon which cuts through truck bed header and cabin then i can start with one sub and as i buy more add them to the polygon unbtil i have 4 18's in free-air. will retain both my read seats and gain all my space back.

ill probably grab a raspberry pi 5 and add to ADC hats and found 2 4 channel output DAC hats so i can also enjoy the dsp featues of the RPI5 plus i have a radio dash kit for my truck to install a 9" screen for a nice multimedia setup. i think ill even be able to use the harness i have to retain swc functions

[–] • 0 pt

clarity

That was never my experience with a vacuum amp, but to each his own.