PopaTopSmith wrote:I've toyed with the idea of buying an old tube system for years but always decided against it because there is so much I don't know. Instead, I've been quite content to play my vinyl through an old Sansui 9090 and Klipsch Heresy's.
I had a 9090DB once, the Hafler DH-101 preamp run into the 9090's amp section was a revelation. Imagine a well restored tube system.
PopaTopSmith wrote:A week ago I had never heard of Dynaco but ran into an old friend who said he has the ST-70 and Pass-2 units that he'd sell me for $600. He said they work fine and have not had any modifications - and will be glad to audition them for me after the holidays. He said that they are a little more valuable due to them being 'factory wired' and he told me to read up on the Dynaco's to see what I thought.
A little pricey, but truly factory wired, unmodified units that are in pristine condition would be worth it, IMHO.
PopaTopSmith wrote:After spending some time online and in this and other forums, I've convinced myself that this might be a good entry-level tube amp / pre-amp - and that I might at some point down the road be interested in learning more about the potential modifications that are out there.
Quit reading and start listening to them!
PopaTopSmith wrote:This being my first post, I hope that I'm following the protocol for posting questions, etc.
Our Moderator, Bob Latino, will certainly let you know if you're misbehaving.
PopaTopSmith wrote:I understand that condition is very important and as far as appearances go, these two components are very, very clean. Original brown patina is unmolested, the original lettering not worn away. Assuming that I hook up my Heresy's to these and they play nicely and all functions operate correctly, would any of you please tell me what you think of the $600 price tag?
Kinda sounds like a decent deal. My recollection is that the Heresys are quite efficient - Paul Klipsch built most of his speakers that way. His favorite saying was "What the world needs is a good five watt amplifier" - that's how efficient most of the speakers he designed were. An ST-70 will not even break a sweat on those speakers; even my little 17 watt Dynaco ST-35 could drive you out of the room with Heresys.
Bob Latino sells amp kits that are as modern as you can get using vacuum tubes. If you go that route then his smallest stereo amp should be more than enough power for the Heresys. It goes without saying that they will sound better than a 55-year-old design with vintage (dying and hopelessly out-of-specification) parts. Roy Mottram (also a member) sells highly regarded vacuum tube preamps, with and without phono sections, that are an extraordinary value. Full Disclosure: I have no financial interest in any of the above items or sellers; I don't own any of their products, but I do own some old Dynaco equipment I bought over 20 years ago.
One last note: The phono section of the PAS-2 will need to have some parts changed to correct values to adhere to the RIAA curve. Without these changes you're listening to your vinyl through incorrect RIAA de-emphasis. There is a "Sticky" that addresses this issue.
So there you are, my two cents. Enjoy the tyranny of choice.
Last edited by DarthBubba on Mon Dec 30, 2013 1:49 am; edited 2 times in total (Reason for editing : Fixed a redundacy and pointed out the PAS-2 RIAA fix in the "Sticky" area.)