Wow, my tubes have been magically transformed into super tubes thanks to this tweak: https://pearl-hifi.com/03_Prod_Serv/Coolers/Coolers.html Just kidding, but they look pretty cool (ha!) and I can definitely feel a steady stream of hot air rising from the tube now (haha!).

Shhhh!

Frankentube testing day 2 of 2: The Frankentube I found to be the best in my small collection (I have 3, the winner is one labeled Philco) went up against my 6SN7 champs today... - Mullard ECC33. The Frankentube has a an amazing sound, with incredible clarity in bass and treble, but this...

My testing today leads me to agree with you...the non-Frankie 7N7 sounds great, but dropping in a real Frankie reveals the non-Frankie is a bit thinner in the bass area and not quite as exciting. Not bad at all though. The Philco Frankentube I'm comparing it to was about $6 (cheaper than the...

Yes, I have a tester, but it is being calibrated/repaired at the moment. After a bit more testing, I think that tube is just a bit weak (it probably won't test very well). When I switched in my other Frankentube (labeled Philco, but meeting all the requirements in the original Frankentube...

I noticed something a bit odd this morning while listening to a Frankentube (well, it's a very tall 7N7 with a chrome top and metal base, at least): the bass seemed a bit light, but I kept listening, then about 30 minutes later I noticed the tube was running quite hot, so I put a...

Another question: has anyone tried an ECC32 lately? How did that turn out?

Just out of curiousity, could someone here familar with electrical engineering explain why similar tubes (e.g. Sylvania 6SN7 vs. Ken-Rad 6SN7) sound different (in particular, differencs in, say, bass or midrange)?

Just reiterating my thoughts on the (relatively cheap) ECC82 (I have two Telefunkens that were $18 each on eBay a few months ago)...this tube sounds very, very nice. Detailed, good bass, solid midrange (I'll leave the highs to someone else...my ears are a bit old). Not much warmth like the...

How did you guys know that I keep my weed in it? So which strains make the Lyr 3 sound best? Should we start a Lyr 3 joint rolling thread?

My understanding is that the ECC33 is a very close match to 6SN7 and can be used safely in a Lyr 3 (I've run quite a few for quite awhile in mine). The ECC32 (probably best known for the Mullard coke-bottle shaped tube) has different electrical characteristics (somebody here can elaborate I'm...

I've said it before, but just adding to the current discussion about the Mullard ECC33...this tube is amazing! I've been listening to all sorts of tubes this week at work (RCA red base 5692, KenRad JAN-CKR, Sylvania 3-hole Bad boy), but after popping in the Mullard this morning I'm hearing new...

Bride of Frankentube? https://www.ebay.com/itm/2-new-tubes-EL34-6CA7-RFT-Telefunken-Germany-matched-pair/382833658564?epid=805288596&hash=item5922aa0ac4:g:qL0AAOSwDXxcgjny Not sure if they can be adapted to a Lyr 3, but they look interesting.

What if everyone in this thread chipped in? https://www.ebay.com/itm/Matched-Pair-of-Standard-Sweden-33S30-5692-6SN7GT-NOS-NIB-Vacuum-Tubes/323700155462?hash=item4b5e086446:g:jHgAAOSwLeFcP7s-

I've been using CanOpener for awhile and I agree that it really opens most headphones up. In addition to effects like what CanOpener gives you (which can vary from one music style to the next, so I tend to run with minimal modifications, or just turn it on and off as needed with JRiver's easy...