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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 6503 
One-stage Milq++ and the DHT's alleged tone 6502 
DHT Milq? 6502 
The DHT journey. 6502 
DHT tone 6502 
Well, why not? 6501 
Holding the Fort 6501 
My DHT experiment: Preface 6501 
Input tube and DC heaters 6500 
Reimyo Pat 777 6500 
My DHT experiment: Observations 6496 
DHT or 300B? 6496 
300B 6496 
Talking, perception and the grounds for objectively 6496 
The Wine Via the Wine Glass 6495 
Hence the confusion 6495 
My DHT experiment: some conclusions. 6495 
Reality Reconstruction is not a functionality. 6495 
My experience with DHTs 6495 
Pigmented coloration? 6495 
Dht-dht 6495 
Dynamic viscosity? 6495 
The Pallette preamp... 6495 
If one DHT is good, two must be better? 6495 
"soul" of tubes 6495 
There is a difference... 6495 
Vibration injection? 6495 
Homework # 4334 6495 
The 01A-71A-10Y-45 chain 6495 
Old valves have more soul! 6494 
Was it soul or soil? 6494 
It was just a heading 6494 
Adjustable color: TIMBRE LOCK? 6494 
Neutral or neutral/uncoloured? 6494 
..are lacking in power, dynamics and bandwidth. 6494 
Timbre-Lock. Not quite ready for prime time. 6494 
Injection of analog dither? 6494 
Subliminal signal 6494 
The idea of analog randomanization. 6494 
Okay, what Avicena Power Generator 6494 
I hope you will be hearing about it. 6493 
Avicenna = Arabian 6493 
Persian, not Arab 6493 
The “second solution” - a major disappointment 6493 
More words to describe "sux" please 6493 
Revolution 6493 
The non-melodramatic DHT? 6493 
One-stage DHTs 6492 
One other thing 6492 
One stage 6492 
Brewing, thinking and heating 6492 
Physical characteristics of electronic devices 6492 
I see the things differently. 6492 
Don't waste time being "creative" 6492 
The audiophile attitude 6492 
The where and why of design choices 6492 
Blah blah blah 6492 
Laconic Clarity vs. Comfort vs. Nostalgia 6492 
Do I need to be hissing? 6492 
...associated with lack of neutrality and colorati... 6492 
John Broskie's Partial feedback amplifier 6492 
Randomness vs. freedom and the Homework # 4334 6491 
What is randomness? 6491 
Those least three possibilities… 6491 
Randomness and Music's Prerogative 6491 
It works, … sort of. The revolution is canceled. 6491 
Thorsten Loesch’s article about DHT SETs 6489 
A Beautiful Mind 6488 
Some summary and conclusions from the first phase. 6486 
Second phase: revising requirement for my DHT objectives. 6471 
Tubes for your DHT amp 6471 
Abandoning Milq? 6471 
Will see how it goes.... 6471 
Single-stage Milq vs. Sun Audio VT-2A3 6469 
Topology and 2A3? 6469 
6SN7-2A3 amps? 6469 
Type Casting 6469 
Sun Audio SV-2A3 6469 
6sn7-2a3 6469 
Topology vs parts 6469 
For a DHT amp, you are listening to the power supply 6469 
The vintage tubes syndrome. 6469 
Parts Frenzy 6469 
Too many new sounds 6469 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6468 
New tubes 6467 
Milq bias vs. batery bias 6467 
The batteries are a tricky thing. 6467 
Swimming the ocean at night? 6467 
New 2A3 6467 
To kill of do not kill the capacitor. 6466 
The JJ Electronic amp. 6465 
JJ 2A3 and amp 6465 
Czech tubes 6463 
Single plated vs Double plated? 6463 
Mono plate 2A3 tubes 6463 
I suggested once VT52 tube 6462 
The 800R vs. 1800R vs. 5500R 6462 
YO-186 as the output tube. 6459 
Here she is. 6458 
Some talks about the new production tubes 6454 
New 2A3 tubes 6454 
Some thoughts about one-IHT vs. multiple-DHT 6454 
The Sun Audio with 6E5P 6453 
Multistage DHT circuits 6452 
Wrong tube or wrong topology – here is the question. 6451 
Emission Labs 2A3 6451 
Some comment and questions about then 2A3 talks. 6451 
Which Chinese 2A3? 6451 
OK, for a first time I like the San Audio Kit. 6451 
The YO186 Strip Show 6451 
More on the 2A3 comparisons 6450 
It will be interesting…. 6450 
OPT impedence 6450 
More about the Plate Loading 6450 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6445 
2A3 data 6445 
The New 2A3 tubes 6445 
How many stages I need for 110dB sensitivity, smal... 6445 
How many stages and why... and who makes that 45 o... 6444 
Everything about everything. 6444 
Some very good points... and... possibly more logi... 6444 
Options, options, options.... 6444 
I think we agree overall 6444 
An IDHT with more gain? 6443 
You don't ask for much now, eh? 6443 
2A3 tube impressions 6438 
Interesting analogy 6438 
NOS 2A3 tubes versus new tubes 6438 
Hmmm, let me try this one again... 6438 
Sylvania 2A3 identification 6438 
A picture is worth a thousand micromhos? 6438 
I have more interest in the period tubes 6438 
Why NOS tubes? 6437 
The Holly Ignorance 6437 
Tube tasting 6437 
The cathodes’ flatulence? 6437 
Make mine thoriated please 6437 
Any Germans out there? 6437 
6E5P VS 6E6P 6437 
Vibrations? What do you with them? 6437 
Vibration in tubes and sounds 6437 
UX4 vs UX4ruskie 6436 
Ringing the tubes? I do not know how about that. 6436 
Tube sound and vibration 6436 
The thoughts collection about YO186? 6430 
The lights look green for the YO tube 6429 
"Melquiades" with YO-186. Something like... 6429 
My version of RE-604 and PX4 6428 
The YO186 tube sockets. 6428 
B4/B5 British made 6427 
The YO186’s sockets and prices 6427 
DHT 2A3 amplifier rectification 6426 
My attitude toward tube rectification. 6426 
Tu-be or not Tu-be, seems Tu-be the question. 6425 
It looks like DHT DSET is shaping up. 6424 
The Sylvania 2A3 NOS report 6421 
The Citizen Kane syndrome. 6421 
Sylvania 2A3 in a World without Color 6420 
Are NOS and new manufacture comparing oranges to o... 6420 
That all is incorrect in a way…. 6420 
NOS vs new 2A3 tubes 6420 
The identical operation environment? 6420 
Preferred 2A3 operating point 6420 
The sound of the 2A3 however? 6420 
Circuit modification for 2A3 optimization 6419 
How to get max power from 2A3 6419 
2A3 voltages, loads and realized output power 6419 
Optimal operation of 2A3: an experiment 6419 
Tubes, Whole Circuits, Expectations and Sound 6419 
Gain is not power. 6419 
2A3 amplifier modification & Optimization 6419 
Specialized DSET approach 6419 
6C33/2A3 DSET? 6419 
SET usable power and making the most of it 6419 
The 2A3 loading 6419 
DSET solution for EdgarHorn? 6419 
Optimizing the 2A3 6419 
How much to DSET a DSET 6419 
DSET for Titan 6419 
The Best of All Worlds 6419 
Multiamp setup 6418 
Optimizing the (NOS) 2A3... "KM-style"? 6418 
There are many opportunities, it all depends what ... 6418 
Modifying amplifer to optimize NOS 2A3 performance 6418 
Conceptualizing Melquiades DSET is done 6412 
2A3 and 400V supply 6412 
Pudding and the chicken wires 6411 
Another shot at numbers 6411 
How to cook the "uninformed" anode. 6411 
Okay, so this might work.... 6411 
The DHT Milq DSET, the prebuilt draft. 6411 
Looks good, but.... 6410 
2A3 with slightly lover filament voltage? 6410 
Less is more... usually. 6410 
Where to burn gain? how? and where to get beter st... 6409 
Stepping Out 6409 
Said to be good, but 6409 
Gain to lose 6409 
Why nothing is simple with this damn amp! 6409 
Another idea for losing gain 6409 
What's best 6409 
Options, options... 6409 
Actually, it is not so bad. 6409 
Other compromises... 6408 
Cathode vs. fixed with DHT 6407 
Is it glowing yet? 6387 
It is comming.... 6387 
The new MF channel. 6381 
I started to work on the Milq’s DHT Island. 6380 
Innerstage loading vs. OPT loading. 6372 
The intestage loading talk. 6369 
My playback feels like it is broken. 6364 
1 in 50? 6364 
Yes, it was after PP2000 6364 
Die Walküre soldering. 6363 
The post Die Walküre soldering 6362 
Another amp arond YO186 6361 
Gain? 6361 
The Unexpected problem with DHT Milq. 6361 
Simple is good 6360 
Ok, I am moving forward. 6360 
The Milq DSET is up. 6359 
My DH DSET – 2 days later. 6357 
Here is more data to reconcile. 6357 
Hm, that is interesting and unpleasant so far. 6356 
Ok, what do I want? 6356 
Let Go of Some Conceptual "Restrictions"? 6356 
The Milq DH DSET, the further thoughts in progress. 6356 
Crunching Numbers; Shaping Sound 6356 
How about the tweeter? 6355 
Tweeter Efficiency? 6355 
Safe and Sound 6355 
More mystery with tweeter but still on the subject. 6355 
Some clarifications. 6355 
How about that?!!! 6355 
Further considerations: DC-coupling. 6353 
Head Room 6353 
To kill the mandatory 13dB 6352 
DC coupling and killing 13db and driving 6e5p miller and.... 6352 
I do not think that it might be damaging… 6352 
Again with the PS 6352 
AKA J.C. Morrison’s amp but… 6350 
Parallel Universe 6350 
Melquiades HD MF DSET, Draft13. 6348 
Why I let other people build them... 6348 
Ok, it's going to right direction. 6348 
Ok, it looks already very close…. 6347 
The Loftinish-Whitish, well sort of…. 6344 
MF: the pre-final version. 6344 
Loftin-White? 6344 
Did anyone hear the PX4 amplifiers? 6344 
What Could use Improving at This Point? 6344 
The Milq’s MF front-end is done 6340 
Why I Let Other People Build Them, II 6340 
Define really quiet 6339 
Another variable of sound 6339 
Backlash? 6339 
Alternative filament supplies 6339 
I kind of faced a problem with AC 6339 
Going down the DC path 6338 
It is not about the “whole sound” but about “molec... 6338 
Molecular sound 6338 
AC-DC heater supply 6338 
The Tentlabs are $10 worth PS. 6338 
The unexpected resolution of AC vs. DC quandary. 6338 
The devil is less scared than it depicted. 6338 
Hiss or Hum 6338 
AC transformers 6338 
I have seen the Promised Land 6337 
OK, the choke noise is not a problem anymore 6337 
Ok, it is working fine but… 6336 
Divide and Conquer 6336 
The design phase is over. 6335 
The unexpected insanity! 6334 
Loading 6334 
Looking for inspiring ideas for 'universal' loadin... 6334 
A filaments Sherlock Holmes wanted. 6334 
Going the Distance 6334 
Read the f*** manual! 6334 
Agreed. 6334 
I agree 6334 
The filament transformer 6334 
Center-tap and options 6334 
Something like this…. 6334 
Avoiding "Dial-an-Amp" 6334 
The foreplay is going on. 6334 
Split balance 6333 
Further thoughts about my DH filaments 6333 
The Shuguang 2A3 tubes. 6333 
SHuguang 6333 
Going through…. 6332 
The 2.5V noise vs. 4V noise. 6331 
More about Shuguang 2A3C 6331 
Hum vs voltage 6331 
Meow about the tubes… 6331 
To Be a Content Cat 6331 
Completed! 6328 
Tradition 6328 
Absolutely beautiful! 6328 
The 'film' caps in PS 6327 
Science or religion 6327 
Mass Extinction 6327 
Electrolytics, technology and time 6327 
No more questions about PS capacitors. 6327 
Capacitor choices 6327 
Good time. Welcome back. Thanks God. 6326 
The minor day of Quartets. 6326 
Them's the Breaks 6326 
Eventually! 6325 
So Soon? 6325 
DHT MF channel and 6-ch amp: first conclusions 6325 
All Abuzz about Nothing 6324 
The wire for DC-coupling 6324 
The Dirt on DIY Backlash 6324 
DSET vs. the “better tubes”. 6324 
How to test the DH tubes properly? 6323 
Pairing up tubes for SE use 6322 
The DHT live reserve 6321 
Some interestng models 6321 
Eaten alive. 6321 
The tubey déjà vu? 6320 
The new concept of my output transformer. 6316 
The 4V takes a lead. 6312 
Listening the DH and the striped down version of M... 6309 
I kind of slowly learn what I need. 6309 
More HF from a transformer and DHT? 6307 
Since You Don't Need the Gain 6306 
Exiting the design mode? 6306 
Bye-bye the input divider on MF! 6306 
A few steps back and a gaint leap ahead. 6302 
Single-stage vs. DHT amp. 6301 
Setting up the new Playback 6300 
And the winner is… so far 6297 
If you like type 45... 6297 
Type 45... they're not all the same 6297 
Favorite Flavor? 6297 
The 45 times Meow... 6297 
The problem that I see is… 6297 
Running the 45 6297 
The 10Y...and bye bye Newton 6296 
The commentaries about everything. 6296 
Driver tube and biasing 6296 
DHT drivers 6296 
The ideas are worth trying? 6296 
A question about the polishing the things…. 6292 
The Particular Tube, I'm afraid... 6292 
Driving the 45... cathode first 6291 
ST or Globe; old or new... 6291 
Whatever sticks to the wall as an operation point ... 6291 
The attenuating crap in secondary. 6291 
Operating points and cathode current 6291 
The Burgeoning Opportunities! 6291 
Actually it is not so simple. 6291 
Resistors at the front 6290 
A minor alternation of a position 6290 
The era of enlightenment. 6287 
The devil is in the details.... 6287 
Constructing Sound 6287 
A new view on the DHT evaluation. 6286 
The “strange” YO186 6277 
The dead guy’s lessons. 6232 
2S4S and 2A3 6223 
Ho to use the YO186 6216 
YO 186 fundamental flavor 6216 
The YO-YO tube and "fundamentals" channel 6216 
The live without the YO186, again.... 6214 
Not anymore! 6203 
The very good YoYonisation! 6202 
….above and below two very clean channel. 6201 
The DHT and esoteric imaging deformation. 6188 
DHT, YO186, or??? 6188 
I had no idea how ‘different’ it is. 6135 
The Kazitsky Manufacturing and YO104, some history. 6134 
"Absolution and Eternal Refuge." 6131 
Sofia Electric Type 45 Mesh 6121 
The true association of YO186's Sounds. 5883 
All the Best from Burgundy 5883 
Cheesy tubes 5882 
Me and my DHT references… 5773 
Y0-186 in winter. 5676 
Y0-186 sounds like… 5675 
Rethinking the YO186 tube. 5644 
In My Dreams 5644 
Grunt from type 45? A ridicules comment. 5644 
Blame? 5643 
When good is not good enough. 5643 
45s, Drivers, and 45s 5643 
Hm, that was so simple after all! 5642 
How the YO186 was used. 5226 
What is old is new? 5225 
YO186 vs. type 45. 5224 
The YO186 is gone.... :-( 4773 
That sucks. 4773 
YO186 4771 
Hm, what the hell is going on? 4771 
I do not think that anybody but me would like YO186 4771 
A hallucination? 4768 
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