2. amps-preamps
  3. 138979-115924

Questions about my system.

I have an Audio Research LS-16 tubed pre-amp which runs into a Madrigal Proceed HPA2 amp.

With the help of the folks here at Audiogon I've got it all set up a tweaked and sounding good.

However, having inherited this system rather than having researched it and chosen it myself....and being new to hi-fi...I have some basic questions about these components, particularly the Proceed.

First, am I correct in saying that the HPA2 is a solid state amp? I've seen pictures inside them and saw no tubes. Huge blue capacitor looking things but no glass tubes.

Second, across the front of the amp it says "dual monaural amplifier". My guess is that this means it is essentially two mono-block amps in one package. Is that right?

Finally, why would one choose to pair a tube pre-amp with a solid state amp? Is that typical? What are the drawbacks?

Thanks,

George
n80
mechans
3,048 posts
 
Certain brands of tube amps don't sound like typical Tube equipment and sound more SS like.  If you want Tube sound use a tube output amplifier.


There is nothing wrong, per se, from your set up except you thought you had a tube power amp. The configuration you currently have tube pre and SS powerbis cpmmon and well liked by many.
n80 OP
2,133 posts
 
mechans, I was pretty sure my amp was SS. 

From what I've read in reviews etc, it sounds like the original owner knew what he was doing or was well advised regarding that matching of components and cables with this system. I guess I'm doubly fortunate in that regard.

Am I right in assuming that "dual monaural" just means two mono-blocks in one box?
hk_fan
526 posts
 
Dual Monoaural means two mono’s in a single housing, two power supplies, dual everything. The HPA’s are fantastic amplifiers, yes they are solid-state.  I owned one for a while and would still have it if one of the channels didn’t die on mine.

You inherited a very nice system, enjoy.
n80 OP
2,133 posts
 
I have heard that they are prone to failure. I hope that mine continues to function properly as repairs+shipping (100 pounds) would be too expensive for me I'm afraid.
tomic601's avatar
tomic601
13,166 posts
 
Enjoy the system
people get too wrapped up in labels- poorly executed dual mono sounds bad......
you have a fantastic preamp and while I have never heard it rumors have it a good solid amp. Enjoy
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