captainbeefheart Posted January 25, 2022 Share Posted January 25, 2022 11 minutes ago, MeloManiac said: Here there are pictures and schematics: https://www.diyaudio.com/community/threads/tubecube-7-pcb-inspection.346994/ Thank you!! Pretty much what I expected accept it does have feedback, I will calculate how much they are using. I don't like the current source at the output tube, you just cannot beat a simple RC network, the CCS at the cathode will have awful overload characteristics and with such a low powered amp you do not want that. I know they are en vogue at the moment but it's just not a place I would use a CCS. Other than that it's a pretty cool little amp, I like it. 2 Quote Link to comment Share on other sites More sharing options...
sunnysal Posted January 26, 2022 Share Posted January 26, 2022 On 4/17/2021 at 2:08 PM, tube fanatic said: Any pentode can be wired to operate as a triode, and there are many wonderful SETs which use pentodes wired that way. Some pentodes, when “triode strapped”, have more linear characteristics (less distortion) than some popular triodes. Triode purists may disagree....... Maynard my Dynaco MkIVs monoblocks are strapped for "triode" operation of the EL34, it sounds great! Only dropped it from my Khorn system because I installed my 2A3 PP amps...regards, tony Quote Link to comment Share on other sites More sharing options...
Area 51 Posted February 5, 2022 Share Posted February 5, 2022 On 1/24/2022 at 11:42 AM, sbcoffey42 said: I think I am going to go ahead and take the plunge. Did you do it? What are your impressions? Quote Link to comment Share on other sites More sharing options...
sbcoffey42 Posted February 5, 2022 Share Posted February 5, 2022 3 hours ago, Area 51 said: Did you do it? What are your impressions? I can't make up my mind yet. I am seriously considering the SSE board and build my own from tube labs or the ST-35 board from tubes for HI-Fi. In the meantime, I read enough to know the impact of the Pre-amp on the audio so I bought a preamp from tubes4hifi. It should be delivered today and after a reasonable burn in time will see what the next step is. Quote Link to comment Share on other sites More sharing options...
Area 51 Posted February 5, 2022 Share Posted February 5, 2022 9 hours ago, sbcoffey42 said: I read enough to know the impact of the Pre-amp on the audio so I bought a preamp from tubes4hifi. That's interesting. I have seen "there is no preamp like no preamp. Go direct." And, I have seen "the preamp is most important". I hope to experiment with both. I suppose it depends on the other links in the chain? Quote Link to comment Share on other sites More sharing options...
sbcoffey42 Posted February 6, 2022 Share Posted February 6, 2022 9 minutes ago, Area 51 said: That's interesting. I have seen "there is no preamp like no preamp. Go direct." And, I have seen "the preamp is most important". I hope to experiment with both. I suppose it depends on the other links in he chain? If you want more than one input then the preamp seems to be the thing. I plan to start this as the input to my as receiver for now until I start the next one 1 Quote Link to comment Share on other sites More sharing options...
MeloManiac Posted February 6, 2022 Share Posted February 6, 2022 5 hours ago, sbcoffey42 said: 5 hours ago, Area 51 said: That's interesting. I have seen "there is no preamp like no preamp. Go direct." And, I have seen "the preamp is most important". I hope to experiment with both. I suppose it depends on the other links in he chain? Expand If you want more than one input then the preamp seems to be the thing. I have a mechanical switch that allows me to connect 4 inputs to my Tubecube 7. 2 Quote Link to comment Share on other sites More sharing options...
DRICH9091 Posted November 1, 2022 Share Posted November 1, 2022 Can I run 89 db Polks on this? I have a moderately small room dedicated to vinyl. Quote Link to comment Share on other sites More sharing options...
82 Cornwalls Posted November 1, 2022 Share Posted November 1, 2022 10 hours ago, DRICH9091 said: Can I run 89 db Polks on this? I have a moderately small room dedicated to vinyl. Do you have one or just thinking about buying one? How loud (spl dBs) do you listen and how far from the speakers? Quote Link to comment Share on other sites More sharing options...
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