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Site News: 26 Aug 2026

Romy the Cat has found another room. I’ve started a new fiction project under my name, Roman Bessnow. The new work is at MutationsBook.com
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Thread WITH the new posts.

Legends: "Week" - last week posts, "Bold" - entered last 48 hours.
Single-stage Melquiades vs. DHT amps 6559 
One-stage Milq++ and the DHT's alleged tone 6558 
DHT Milq? 6558 
The DHT journey. 6558 
DHT tone 6558 
Well, why not? 6557 
Holding the Fort 6557 
My DHT experiment: Preface 6557 
Input tube and DC heaters 6556 
Reimyo Pat 777 6556 
My DHT experiment: Observations 6552 
DHT or 300B? 6552 
300B 6552 
Talking, perception and the grounds for objectively 6552 
The Wine Via the Wine Glass 6551 
Hence the confusion 6551 
My DHT experiment: some conclusions. 6551 
Reality Reconstruction is not a functionality. 6551 
My experience with DHTs 6551 
Pigmented coloration? 6551 
Dht-dht 6551 
Dynamic viscosity? 6551 
The Pallette preamp... 6551 
If one DHT is good, two must be better? 6551 
"soul" of tubes 6551 
There is a difference... 6551 
Vibration injection? 6551 
Homework # 4334 6551 
The 01A-71A-10Y-45 chain 6551 
Old valves have more soul! 6550 
Was it soul or soil? 6550 
It was just a heading 6550 
Adjustable color: TIMBRE LOCK? 6550 
Neutral or neutral/uncoloured? 6550 
..are lacking in power, dynamics and bandwidth. 6550 
Timbre-Lock. Not quite ready for prime time. 6550 
Injection of analog dither? 6550 
Subliminal signal 6550 
The idea of analog randomanization. 6550 
Okay, what Avicena Power Generator 6550 
I hope you will be hearing about it. 6549 
Avicenna = Arabian 6549 
Persian, not Arab 6549 
The “second solution” - a major disappointment 6549 
More words to describe "sux" please 6549 
Revolution 6549 
The non-melodramatic DHT? 6549 
One-stage DHTs 6548 
One other thing 6548 
One stage 6548 
Brewing, thinking and heating 6548 
Physical characteristics of electronic devices 6548 
I see the things differently. 6548 
Don't waste time being "creative" 6548 
The audiophile attitude 6548 
The where and why of design choices 6548 
Blah blah blah 6548 
Laconic Clarity vs. Comfort vs. Nostalgia 6548 
Do I need to be hissing? 6548 
...associated with lack of neutrality and colorati... 6548 
John Broskie's Partial feedback amplifier 6548 
Randomness vs. freedom and the Homework # 4334 6547 
What is randomness? 6547 
Those least three possibilities… 6547 
Randomness and Music's Prerogative 6547 
It works, … sort of. The revolution is canceled. 6547 
Thorsten Loesch’s article about DHT SETs 6545 
A Beautiful Mind 6544 
Some summary and conclusions from the first phase. 6542 
Second phase: revising requirement for my DHT objectives. 6527 
Tubes for your DHT amp 6527 
Abandoning Milq? 6527 
Will see how it goes.... 6527 
Single-stage Milq vs. Sun Audio VT-2A3 6525 
Topology and 2A3? 6525 
6SN7-2A3 amps? 6525 
Type Casting 6525 
Sun Audio SV-2A3 6525 
6sn7-2a3 6525 
Topology vs parts 6525 
For a DHT amp, you are listening to the power supply 6525 
The vintage tubes syndrome. 6525 
Parts Frenzy 6525 
Too many new sounds 6525 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6524 
New tubes 6523 
Milq bias vs. batery bias 6523 
The batteries are a tricky thing. 6523 
Swimming the ocean at night? 6523 
New 2A3 6523 
To kill of do not kill the capacitor. 6522 
The JJ Electronic amp. 6521 
JJ 2A3 and amp 6521 
Czech tubes 6519 
Single plated vs Double plated? 6519 
Mono plate 2A3 tubes 6519 
I suggested once VT52 tube 6518 
The 800R vs. 1800R vs. 5500R 6518 
YO-186 as the output tube. 6515 
Here she is. 6514 
Some talks about the new production tubes 6510 
New 2A3 tubes 6510 
Some thoughts about one-IHT vs. multiple-DHT 6510 
The Sun Audio with 6E5P 6509 
Multistage DHT circuits 6508 
Wrong tube or wrong topology – here is the question. 6507 
Emission Labs 2A3 6507 
Some comment and questions about then 2A3 talks. 6507 
Which Chinese 2A3? 6507 
OK, for a first time I like the San Audio Kit. 6507 
The YO186 Strip Show 6507 
More on the 2A3 comparisons 6506 
It will be interesting…. 6506 
OPT impedence 6506 
More about the Plate Loading 6506 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6501 
2A3 data 6501 
The New 2A3 tubes 6501 
How many stages I need for 110dB sensitivity, smal... 6501 
How many stages and why... and who makes that 45 o... 6500 
Everything about everything. 6500 
Some very good points... and... possibly more logi... 6500 
Options, options, options.... 6500 
I think we agree overall 6500 
An IDHT with more gain? 6499 
You don't ask for much now, eh? 6499 
2A3 tube impressions 6494 
Interesting analogy 6494 
NOS 2A3 tubes versus new tubes 6494 
Hmmm, let me try this one again... 6494 
Sylvania 2A3 identification 6494 
A picture is worth a thousand micromhos? 6494 
I have more interest in the period tubes 6494 
Why NOS tubes? 6493 
The Holly Ignorance 6493 
Tube tasting 6493 
The cathodes’ flatulence? 6493 
Make mine thoriated please 6493 
Any Germans out there? 6493 
6E5P VS 6E6P 6493 
Vibrations? What do you with them? 6493 
Vibration in tubes and sounds 6493 
UX4 vs UX4ruskie 6492 
Ringing the tubes? I do not know how about that. 6492 
Tube sound and vibration 6492 
The thoughts collection about YO186? 6486 
The lights look green for the YO tube 6485 
"Melquiades" with YO-186. Something like... 6485 
My version of RE-604 and PX4 6484 
The YO186 tube sockets. 6484 
B4/B5 British made 6483 
The YO186’s sockets and prices 6483 
DHT 2A3 amplifier rectification 6482 
My attitude toward tube rectification. 6482 
Tu-be or not Tu-be, seems Tu-be the question. 6481 
It looks like DHT DSET is shaping up. 6480 
The Sylvania 2A3 NOS report 6477 
The Citizen Kane syndrome. 6477 
Sylvania 2A3 in a World without Color 6476 
Are NOS and new manufacture comparing oranges to o... 6476 
That all is incorrect in a way…. 6476 
NOS vs new 2A3 tubes 6476 
The identical operation environment? 6476 
Preferred 2A3 operating point 6476 
The sound of the 2A3 however? 6476 
Circuit modification for 2A3 optimization 6475 
How to get max power from 2A3 6475 
2A3 voltages, loads and realized output power 6475 
Optimal operation of 2A3: an experiment 6475 
Tubes, Whole Circuits, Expectations and Sound 6475 
Gain is not power. 6475 
2A3 amplifier modification & Optimization 6475 
Specialized DSET approach 6475 
6C33/2A3 DSET? 6475 
SET usable power and making the most of it 6475 
The 2A3 loading 6475 
DSET solution for EdgarHorn? 6475 
Optimizing the 2A3 6475 
How much to DSET a DSET 6475 
DSET for Titan 6475 
The Best of All Worlds 6475 
Multiamp setup 6474 
Optimizing the (NOS) 2A3... "KM-style"? 6474 
There are many opportunities, it all depends what ... 6474 
Modifying amplifer to optimize NOS 2A3 performance 6474 
Conceptualizing Melquiades DSET is done 6468 
2A3 and 400V supply 6468 
Pudding and the chicken wires 6467 
Another shot at numbers 6467 
How to cook the "uninformed" anode. 6467 
Okay, so this might work.... 6467 
The DHT Milq DSET, the prebuilt draft. 6467 
Looks good, but.... 6466 
2A3 with slightly lover filament voltage? 6466 
Less is more... usually. 6466 
Where to burn gain? how? and where to get beter st... 6465 
Stepping Out 6465 
Said to be good, but 6465 
Gain to lose 6465 
Why nothing is simple with this damn amp! 6465 
Another idea for losing gain 6465 
What's best 6465 
Options, options... 6465 
Actually, it is not so bad. 6465 
Other compromises... 6464 
Cathode vs. fixed with DHT 6463 
Is it glowing yet? 6443 
It is comming.... 6443 
The new MF channel. 6437 
I started to work on the Milq’s DHT Island. 6436 
Innerstage loading vs. OPT loading. 6428 
The intestage loading talk. 6425 
My playback feels like it is broken. 6420 
1 in 50? 6420 
Yes, it was after PP2000 6420 
Die Walküre soldering. 6419 
The post Die Walküre soldering 6418 
Another amp arond YO186 6417 
Gain? 6417 
The Unexpected problem with DHT Milq. 6417 
Simple is good 6416 
Ok, I am moving forward. 6416 
The Milq DSET is up. 6415 
My DH DSET – 2 days later. 6413 
Here is more data to reconcile. 6413 
Hm, that is interesting and unpleasant so far. 6412 
Ok, what do I want? 6412 
Let Go of Some Conceptual "Restrictions"? 6412 
The Milq DH DSET, the further thoughts in progress. 6412 
Crunching Numbers; Shaping Sound 6412 
How about the tweeter? 6411 
Tweeter Efficiency? 6411 
Safe and Sound 6411 
More mystery with tweeter but still on the subject. 6411 
Some clarifications. 6411 
How about that?!!! 6411 
Further considerations: DC-coupling. 6409 
Head Room 6409 
To kill the mandatory 13dB 6408 
DC coupling and killing 13db and driving 6e5p miller and.... 6408 
I do not think that it might be damaging… 6408 
Again with the PS 6408 
AKA J.C. Morrison’s amp but… 6406 
Parallel Universe 6406 
Melquiades HD MF DSET, Draft13. 6404 
Why I let other people build them... 6404 
Ok, it's going to right direction. 6404 
Ok, it looks already very close…. 6403 
The Loftinish-Whitish, well sort of…. 6400 
MF: the pre-final version. 6400 
Loftin-White? 6400 
Did anyone hear the PX4 amplifiers? 6400 
What Could use Improving at This Point? 6400 
The Milq’s MF front-end is done 6396 
Why I Let Other People Build Them, II 6396 
Define really quiet 6395 
Another variable of sound 6395 
Backlash? 6395 
Alternative filament supplies 6395 
I kind of faced a problem with AC 6395 
Going down the DC path 6394 
It is not about the “whole sound” but about “molec... 6394 
Molecular sound 6394 
AC-DC heater supply 6394 
The Tentlabs are $10 worth PS. 6394 
The unexpected resolution of AC vs. DC quandary. 6394 
The devil is less scared than it depicted. 6394 
Hiss or Hum 6394 
AC transformers 6394 
I have seen the Promised Land 6393 
OK, the choke noise is not a problem anymore 6393 
Ok, it is working fine but… 6392 
Divide and Conquer 6392 
The design phase is over. 6391 
The unexpected insanity! 6390 
Loading 6390 
Looking for inspiring ideas for 'universal' loadin... 6390 
A filaments Sherlock Holmes wanted. 6390 
Going the Distance 6390 
Read the f*** manual! 6390 
Agreed. 6390 
I agree 6390 
The filament transformer 6390 
Center-tap and options 6390 
Something like this…. 6390 
Avoiding "Dial-an-Amp" 6390 
The foreplay is going on. 6390 
Split balance 6389 
Further thoughts about my DH filaments 6389 
The Shuguang 2A3 tubes. 6389 
SHuguang 6389 
Going through…. 6388 
The 2.5V noise vs. 4V noise. 6387 
More about Shuguang 2A3C 6387 
Hum vs voltage 6387 
Meow about the tubes… 6387 
To Be a Content Cat 6387 
Completed! 6384 
Tradition 6384 
Absolutely beautiful! 6384 
The 'film' caps in PS 6383 
Science or religion 6383 
Mass Extinction 6383 
Electrolytics, technology and time 6383 
No more questions about PS capacitors. 6383 
Capacitor choices 6383 
Good time. Welcome back. Thanks God. 6382 
The minor day of Quartets. 6382 
Them's the Breaks 6382 
Eventually! 6381 
So Soon? 6381 
DHT MF channel and 6-ch amp: first conclusions 6381 
All Abuzz about Nothing 6380 
The wire for DC-coupling 6380 
The Dirt on DIY Backlash 6380 
DSET vs. the “better tubes”. 6380 
How to test the DH tubes properly? 6379 
Pairing up tubes for SE use 6378 
The DHT live reserve 6377 
Some interestng models 6377 
Eaten alive. 6377 
The tubey déjà vu? 6376 
The new concept of my output transformer. 6372 
The 4V takes a lead. 6368 
Listening the DH and the striped down version of M... 6365 
I kind of slowly learn what I need. 6365 
More HF from a transformer and DHT? 6363 
Since You Don't Need the Gain 6362 
Exiting the design mode? 6362 
Bye-bye the input divider on MF! 6362 
A few steps back and a gaint leap ahead. 6358 
Single-stage vs. DHT amp. 6357 
Setting up the new Playback 6356 
And the winner is… so far 6353 
If you like type 45... 6353 
Type 45... they're not all the same 6353 
Favorite Flavor? 6353 
The 45 times Meow... 6353 
The problem that I see is… 6353 
Running the 45 6353 
The 10Y...and bye bye Newton 6352 
The commentaries about everything. 6352 
Driver tube and biasing 6352 
DHT drivers 6352 
The ideas are worth trying? 6352 
A question about the polishing the things…. 6348 
The Particular Tube, I'm afraid... 6348 
Driving the 45... cathode first 6347 
ST or Globe; old or new... 6347 
Whatever sticks to the wall as an operation point ... 6347 
The attenuating crap in secondary. 6347 
Operating points and cathode current 6347 
The Burgeoning Opportunities! 6347 
Actually it is not so simple. 6347 
Resistors at the front 6346 
A minor alternation of a position 6346 
The era of enlightenment. 6343 
The devil is in the details.... 6343 
Constructing Sound 6343 
A new view on the DHT evaluation. 6342 
The “strange” YO186 6333 
The dead guy’s lessons. 6288 
2S4S and 2A3 6279 
Ho to use the YO186 6272 
YO 186 fundamental flavor 6272 
The YO-YO tube and "fundamentals" channel 6272 
The live without the YO186, again.... 6270 
Not anymore! 6259 
The very good YoYonisation! 6258 
….above and below two very clean channel. 6257 
The DHT and esoteric imaging deformation. 6244 
DHT, YO186, or??? 6244 
I had no idea how ‘different’ it is. 6191 
The Kazitsky Manufacturing and YO104, some history. 6190 
"Absolution and Eternal Refuge." 6187 
Sofia Electric Type 45 Mesh 6177 
The true association of YO186's Sounds. 5939 
All the Best from Burgundy 5939 
Cheesy tubes 5938 
Me and my DHT references… 5829 
Y0-186 in winter. 5732 
Y0-186 sounds like… 5731 
Rethinking the YO186 tube. 5700 
In My Dreams 5700 
Grunt from type 45? A ridicules comment. 5700 
Blame? 5699 
When good is not good enough. 5699 
45s, Drivers, and 45s 5699 
Hm, that was so simple after all! 5698 
How the YO186 was used. 5282 
What is old is new? 5281 
YO186 vs. type 45. 5280 
The YO186 is gone.... :-( 4829 
That sucks. 4829 
YO186 4827 
Hm, what the hell is going on? 4827 
I do not think that anybody but me would like YO186 4827 
A hallucination? 4824 
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