Dagostino hd momentum, is lack of rubes a problem?

Is that output imp on preamp side and input on amp side?

never have understood impedance

Source output impedance to pre input impedance, and pre output impedance to amp input impedance (and to a degree, amp to speaker as well)
All need the 1:10 or higher ratio

(1000ohm = 1kohm)

So a source with 100ohm output impedance is good into pre input impedance with 10 x that, which is 1000ohms. (1000ohm is referred to as 1kohm).

Cheers George

So why do ohms ratios increase from source to pre and then to amp and then to speaker.

thanks

 i have spoken with Dan Way back when  1988 we hit it off  hung out a few times  got  together at the Listing Room Scarsdale NY & at his Factory in Orange CT  Solid State is what he is very good at  & had no interest in tubes  even its its just output stage  I too have tried to Mix & match my Krell  Amps With AR tube preamp  and a few other big name tube preamps as far as i am concerned it just does not match up i will keep my KRELL  Amp & pre amp anytime over tube  I do love VAC tube Equipment  but then comes  the tube insanity of rolling tubes & it just never stops   it s  one or the other   i am all in Solid state  M L , J R , Krell will do just fine good night 

So why do ohms ratios increase from source to pre and then to amp and then to speaker.

thanks

Output should be low, so they can drive unimpeded into high impedance.

Imagine a traffic jam caused by 10 lanes coming into 1, that’s like a high output impedance looking at a lower input impedance, 10:1 not good.
You want the opposite. 1:10

Cheers George

Love analogy.  I am not tu smart, pictures make it easy.

so driving uphill toward higher impedance is good. Speakers are on hilltop and source is at bottom of hill

like a high altitude with lower air resistance, ie. why jets fly high in air. Signal path gets alot easier thru all the circuitry and cabling as it flows toward speakers.