MacWorks Posted February 18, 2021 Share Posted February 18, 2021 So I purchased a pair of Heresy II's last year and have them paired with a Adcom preamp and an Mondial Acurus amp. Very please with the overall sound. I have an opportunity to buy a couple of redone Dynaco Mark II's for $800 . The owner states that the are 10 watts ( thought these were 50 watt mono blocks) . So my question is will this be a jaw dropping improvement or will it just be a PIA for me and a money pit replacing tubes? Would a tube pre-amp give me a bigger bang for my buck? I listen to flac files and use Roon on a Raspberry Pi, along with Qobuz and Tidal. TIA Quote Link to comment Share on other sites More sharing options...
veloceleste Posted February 19, 2021 Share Posted February 19, 2021 . 1 Quote Link to comment Share on other sites More sharing options...
Edgar Posted February 19, 2021 Share Posted February 19, 2021 31 minutes ago, veloceleste said: Dynaco MK II’s are50 wpc mono-blocks. I'm not at all familiar with the MK II. You may be thinking of the MK III or MK IV. The links cited are not from the original Dynaco, but they claim to be faithful clones. Quote Link to comment Share on other sites More sharing options...
veloceleste Posted February 19, 2021 Share Posted February 19, 2021 . 1 Quote Link to comment Share on other sites More sharing options...
Edgar Posted February 19, 2021 Share Posted February 19, 2021 (edited) 4 minutes ago, veloceleste said: http://www.thehistoryofrecording.com/Manuals/DynaCo/Dynakit_Mark_II_Manual.pdf page 2 has specs. Very interesting ... looks like a MK III with EL34 tubes. EDIT: Or should I say that the MK III looks like a MK II with 6550 tubes? Edited February 19, 2021 by Edgar Commentary Quote Link to comment Share on other sites More sharing options...
avguytx Posted February 19, 2021 Share Posted February 19, 2021 When you do a copy/paste from another forum, you should paste it as plain text so it doesn't copy the format. It may only show up on those using the dark themed version, though. 1 Quote Link to comment Share on other sites More sharing options...
Edgar Posted February 19, 2021 Share Posted February 19, 2021 9 minutes ago, avguytx said: When you do a copy/paste from another forum, you should paste it as plain text so it doesn't copy the format. To whom was this comment addressed? Quote Link to comment Share on other sites More sharing options...
avguytx Posted February 19, 2021 Share Posted February 19, 2021 59 minutes ago, Edgar said: To whom was this comment addressed? The OP. When copied from another site, it takes the format with it. I've done that before myself. Quote Link to comment Share on other sites More sharing options...
Bubo Posted February 19, 2021 Share Posted February 19, 2021 2 hours ago, veloceleste said: I’ve almost always used a tube preamp with a solid state amp. This seems to be a common theme PS Audio after much hand wringing went this way on their new integratedes. Quote Link to comment Share on other sites More sharing options...
Edgar Posted February 19, 2021 Share Posted February 19, 2021 10 hours ago, avguytx said: The OP. When copied from another site, it takes the format with it. I've done that before myself. I see plain text in my browser (Opera), so I'm wondering what formatting you see that I don't? Off-topic, so no need to dwell on it too much. Quote Link to comment Share on other sites More sharing options...
Tarheel TJ Posted February 19, 2021 Share Posted February 19, 2021 A Dynaco tube amp will sound great with Heresies. I have used a similar setup in the past (Dynaco ST-70 w/ Heresy I). I'd add a sub if you like bass heavy music though. The Heresy doesn't dig too deep on its own. Quote Link to comment Share on other sites More sharing options...
ned Posted March 1, 2021 Share Posted March 1, 2021 Dynaco amps, if well restored will be reliable. The quality of the restoration is key. Find a tech you like and trust. They are old enough that even if they are running well and sound great they may need to be gone through. Old components drift. There's more to it than replacing output tubes. The tube pre vs tube amp is standing discussion. I opt for tube amps and SS or tube preamps. My thinking is that the speakers couple directly with the amp's output transformer while the pre couples with USB, CD players, bluetooth receivers and of course phono cartridges. Stepping up phono and adding the RIAA correction seems less magical than taking line level and bringing it up to 85db without any nasty harmonics. That said, I run a tube pre into tube amps during the winter. I am still blown away. Heresys will reward quality sources. Have fun. I bet your rig sounds great right now. Quote Link to comment Share on other sites More sharing options...
DrTUBE Posted March 1, 2021 Share Posted March 1, 2021 On 2/19/2021 at 12:37 AM, MacWorks said: So I purchased a pair of Heresy II's last year and have them paired with a Adcom preamp and an Mondial Acurus amp. Very please with the overall sound. I have an opportunity to buy a couple of redone Dynaco Mark II's for $800 . The owner states that the are 10 watts ( thought these were 50 watt mono blocks) . So my question is will this be a jaw dropping improvement or will it just be a PIA for me and a money pit replacing tubes? Would a tube pre-amp give me a bigger bang for my buck? I listen to flac files and use Roon on a Raspberry Pi, along with Qobuz and Tidal. TIA IMHO, it's certainly not a bad investment, @MacWorks... Well, only 10Watts RMS coming from a pair of EL34 in a Dynaco MKII amp is somewhat curious... That said, I drive my HERESY I HBR with a pair of compact 10Watts DIY OTL monoblocks, and it is way enough to reach an unbearable loudness level ! So with your "reputedly" MKII 10W Dynacos, it should work fine... Maybe the power tubes are connected in triode mode ? Cheers, Quote Link to comment Share on other sites More sharing options...
moray james Posted March 1, 2021 Share Posted March 1, 2021 push pull EL34 will supply between 30 - 35 watts no problem. Quote Link to comment Share on other sites More sharing options...
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