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A single 6H30 will power almost any phones to extreme volumes, for example.
True... I built an amp using a single 6H30pi and a Sowter 9351. It sounded very nice. But it had two issues: The Miller capacitance of a 6H30p is high, so you need a fairly low-Z source to drive it. And the 9351 costs 91 GBP each - given today's worthless dollar, that's $360 worth of OPTs, plus shipping from England.
I was exposed to a schematic using 6H30 on psu and 6H30pi on the amp sections (sorry, not literate enough to know which 'stage') but it requires 6 Lundahl transforners at around $1k for the Sweedish iron, unless I was confused about the trannies required for the balanced build.
True... I built an amp using a single 6H30pi and a Sowter 9351. It sounded very nice. But it had two issues: The Miller capacitance of a 6H30p is high, so you need a fairly low-Z source to drive it. And the 9351 costs 91 GBP each - given today's worthless dollar, that's $360 worth of OPTs, plus shipping from England.
Pete
That's a lot. I got a pair of 1W parafeed 5K:32 transformers from electra-print for under $100. I also got a pair of nickel lams to swap into those, also for $100, which means $200 for Nickel parafeed transformers. Or, $200 for Intact Audio's nickel AVC's which can be used as an OPT (I am working on a version right now with 71a's). Or, my single feed 5K:32 electra-prints gapped at 35mA weren't more than $150 or so.
Lundahl has the LL1930 which will work for differential or single ended parafeed at about $120 or so. The Hammond 119DA is decent at $60, though they were more decent when they cost $30 for the pair last year. A pair of power toroids can be had for about $40 and can sound surprisingly good.
Headphoneus Supremus: HeadFest '07 Lead Organizer The DOTU
Originally Posted by pmillett
Hey, if you don't like overkill, go for a (practical and perfectly "adequate") opamp-in-a-box!
Besides, it can double as a beverage warmer.
I really think this thread needs to be titled "Nate Maher's Menace". Nate did all the work. I only helped because Nate promised to pick up my beer tab at CanJam. He doesn't know what he signed himself up for
Or maybe call it Maher's Menace...
...Maher's Millett Menace...
...Menacing Maher's Millett...
...Maher's Mega-Massive Menace...
Pete
One vote for Maher's Menacing Millett. Too bad Nate's going to need a second mortgage to cover that bar tab! Talk about menacing.
dsavitsk, I've been very interested in both the L'espressivo and the S^3 amps you've put together for quite awhile. I'm looking at putting together a high-end tube amp in the near future, but perhaps I'll start out with a balanced L'espressivo to start (I've never heard a transformer coupled amp, only OTL).
I've been thinking of going more along the line that Nate has gone, though, as all the top tube amps that are easy to get impressions on are, for the most part, overbuilt OTL amps (Wheatfield, Zana Deux, Singlepowers).
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aka LightMeDark and yhamez on other forums feedback
One vote for Maher's Menacing Millett. Too bad Nate's going to need a second mortgage to cover that bar tab! Talk about menacing.
Al, my plan is to get him started drinking whisky and only later remind him that I agreed to pick up the beer tab. As my West Coast lawyer I may need backup on this...
Headphoneus Supremus: HeadFest '07 Lead Organizer The DOTU
Originally Posted by n_maher
Al, my plan is to get him started drinking whisky and only later remind him that I agreed to pick up the beer tab. As my West Coast lawyer I may need backup on this...
Given that your East Coast counsel is a ball of nerves and and will be rather distracted, I will gladly step in and practice law outside my jurisdiction to back you up on this one. Only problem I foresee is that Pete has been reading this thread, so we had better scrub our posts.
I'm going to create a thread for this amp since it is my intention at the end of the build to publish the schematic and any relevant details so that anyone who's crazy enough can build this amp.
Well we have already established I'm crazy......
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Sources:Computer->Buffalo DAC/0404USB/Nixon USB DAC and Tube DAC/Alien DAC/Archos AV500/4G Ipod/1G Nano
Headphones:Omega IIs/HE 1.2b/DT880/Darth Beyer/HD650/E4C/K240/K340/K701/K1000/ATH-W5000/AH-D5000/KSC75/Triple-Fi 10 Pro
Amps:SRM-007Ta/KGBH/Little Dot 2 ++/Millet Max Hybrid(BJT&MOSFET)/M3/B22(Balanced and 3Ch)/Xin Reference/Mini3
Interconnects: Homemade
Al, my plan is to get him started drinking whisky and only later remind him that I agreed to pick up the beer tab.
TV : Are you stuck in a deadend job?
Homer : May be.
TV : Are you sitting on your couch in front of the tv ...
Homer : What's it to you?
TV : Are you on to your 3rd beer of the evening?
Homer : Does whiskey count as beer?
Given that your East Coast counsel is a ball of nerves and and will be rather distracted, I will gladly step in and practice law outside my jurisdiction to back you up on this one. Only problem I foresee is that Pete has been reading this thread, so we had better scrub our posts.
Wait... you owe me beer too, don't you? I sense a conflict of interest...
Linear Mode
