Sure thing, you're very welcome! Always best to be prepared! I got mine from Victor, but I believe they are common enough to find easily online. However, unfortunately I'm unsure of the exact part number at the moment. It might be best to ask Victor, as not only would he know, he might have...

You're very welcome! Yes, that is strange, but makes some sense since the amp is still able to run. When I blew both of mine, the amp no longer worked in the particular channel where the FET went out, so that may explain the orange instead of purple light. I did some quick searches of the...

I've used dozens of 807s in the 8200 over the years, including ceramic ATS-25s, without issue. I have also blown two FETs thus far, knock on wood! On the DX version, the light always turned purple I believe when the FETs blew (it's been awhile). Both times the tubes were bad, with one blowing...

Thank you @Harmonique131 for sharing your experience! I agree the 8200DX is an amazing amp that pairs very well to all sorts of additional gear. During my journey, I have found that power cables can make a huge difference compared to other changes and DIY has really amazing value, if done...

@ProfessorC1983, I've run my DX almost every day since 2014 and it hasn't developed any sort of hum, so there may be a slight issue with yours. In my experience this is generally due to a tube(s), so maybe swapping them out and seeing if it goes away might be a good place to start. Also, does...

Nice near-field/headphone setup! I like how spacious and organized it is, very nice!

Awesome! Very cool and interesting in regards to your impressions of the headphone output settings, really good to know! I'm also glad to hear the Sophias are working out so well! Would you say they are way beyond the KT77s overall, just a few steps above, or on par, but just different? For...

@jonathan c, really great impressions, thank you for sharing them! Let us know how it fares with your higher ohm headphones too! I have modded HD650s as well as ZMF Auteurs, and both at 300 ohms sound absolutely sublime out of my non-R version. At the same time my 80 ohm custom Beyers sound...

Jeez, some of these NOS tubes are fetching crazy prices! The 6550s have been hard to come by for awhile now and prices have always been quite high. I have a Tung-Sol, RCA (rebranded Tung-Sol I believe), as well as GE 6550a pair. All sound great in the 8200, with my current favorite being the...

@UntilThen, congratulations! While I haven't owned the TU-8500 nor I have really auditioned one before, many 8200 owners have really enjoyed it! I believe some have even commented that they liked it more than the 8200! All depends on where your biggest need is though... I currently only have...

@jonathan c, congratulations and welcome to the club! Let us know how it goes and what questions you have along the way! :beerchug: @UntilThen, very cool about the KT77s, I'll have to pick up a pair! From what I gather it is a substitute for the EL34, hence the long thin bottle design. I...

@urbanfox, you're very welcome! The biggest deals to be had in NOS tubes are simply rebrands, so knowing what to look for is a real game changer. Several manufacturers have little things like this on their rebrands, such as GE and their dot pattern, in addition to Mullard. @UntilThen, as far...

I agree, these tubes are in short supply and prices will continue to rise. The nice thing about the 8200 is that while you still have choices for NOS, if you are willing to pay, there are also options for new stock, which are getting better every day. The best way to determine if an EL34 is a...

@UntilThen, you're very welcome! Yes, there is so much fun to be had with the 8200! I actually haven't tried the Gold Lion KT88 reissues yet, but weeks ago I decided I probably should and have a plan going forward, so soon. While I do have a few pairs of KT88s, none are the original and very...

@UntilThen, I'm so glad the mini-audition went well and you are really enjoying the sound! The ATS-25s you linked below are the ones you want, with the round plates. These ATS-25 round plates, paired with Amperex 7316s, were the combo that bested the Studio with the Utopias that day...