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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 6508 
One-stage Milq++ and the DHT's alleged tone 6507 
DHT Milq? 6507 
The DHT journey. 6507 
DHT tone 6507 
Well, why not? 6506 
Holding the Fort 6506 
My DHT experiment: Preface 6506 
Input tube and DC heaters 6505 
Reimyo Pat 777 6505 
My DHT experiment: Observations 6501 
DHT or 300B? 6501 
300B 6501 
Talking, perception and the grounds for objectively 6501 
The Wine Via the Wine Glass 6500 
Hence the confusion 6500 
My DHT experiment: some conclusions. 6500 
Reality Reconstruction is not a functionality. 6500 
My experience with DHTs 6500 
Pigmented coloration? 6500 
Dht-dht 6500 
Dynamic viscosity? 6500 
The Pallette preamp... 6500 
If one DHT is good, two must be better? 6500 
"soul" of tubes 6500 
There is a difference... 6500 
Vibration injection? 6500 
Homework # 4334 6500 
The 01A-71A-10Y-45 chain 6500 
Old valves have more soul! 6499 
Was it soul or soil? 6499 
It was just a heading 6499 
Adjustable color: TIMBRE LOCK? 6499 
Neutral or neutral/uncoloured? 6499 
..are lacking in power, dynamics and bandwidth. 6499 
Timbre-Lock. Not quite ready for prime time. 6499 
Injection of analog dither? 6499 
Subliminal signal 6499 
The idea of analog randomanization. 6499 
Okay, what Avicena Power Generator 6499 
I hope you will be hearing about it. 6498 
Avicenna = Arabian 6498 
Persian, not Arab 6498 
The “second solution” - a major disappointment 6498 
More words to describe "sux" please 6498 
Revolution 6498 
The non-melodramatic DHT? 6498 
One-stage DHTs 6497 
One other thing 6497 
One stage 6497 
Brewing, thinking and heating 6497 
Physical characteristics of electronic devices 6497 
I see the things differently. 6497 
Don't waste time being "creative" 6497 
The audiophile attitude 6497 
The where and why of design choices 6497 
Blah blah blah 6497 
Laconic Clarity vs. Comfort vs. Nostalgia 6497 
Do I need to be hissing? 6497 
...associated with lack of neutrality and colorati... 6497 
John Broskie's Partial feedback amplifier 6497 
Randomness vs. freedom and the Homework # 4334 6496 
What is randomness? 6496 
Those least three possibilities… 6496 
Randomness and Music's Prerogative 6496 
It works, … sort of. The revolution is canceled. 6496 
Thorsten Loesch’s article about DHT SETs 6494 
A Beautiful Mind 6493 
Some summary and conclusions from the first phase. 6491 
Second phase: revising requirement for my DHT objectives. 6476 
Tubes for your DHT amp 6476 
Abandoning Milq? 6476 
Will see how it goes.... 6476 
Single-stage Milq vs. Sun Audio VT-2A3 6474 
Topology and 2A3? 6474 
6SN7-2A3 amps? 6474 
Type Casting 6474 
Sun Audio SV-2A3 6474 
6sn7-2a3 6474 
Topology vs parts 6474 
For a DHT amp, you are listening to the power supply 6474 
The vintage tubes syndrome. 6474 
Parts Frenzy 6474 
Too many new sounds 6474 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6473 
New tubes 6472 
Milq bias vs. batery bias 6472 
The batteries are a tricky thing. 6472 
Swimming the ocean at night? 6472 
New 2A3 6472 
To kill of do not kill the capacitor. 6471 
The JJ Electronic amp. 6470 
JJ 2A3 and amp 6470 
Czech tubes 6468 
Single plated vs Double plated? 6468 
Mono plate 2A3 tubes 6468 
I suggested once VT52 tube 6467 
The 800R vs. 1800R vs. 5500R 6467 
YO-186 as the output tube. 6464 
Here she is. 6463 
Some talks about the new production tubes 6459 
New 2A3 tubes 6459 
Some thoughts about one-IHT vs. multiple-DHT 6459 
The Sun Audio with 6E5P 6458 
Multistage DHT circuits 6457 
Wrong tube or wrong topology – here is the question. 6456 
Emission Labs 2A3 6456 
Some comment and questions about then 2A3 talks. 6456 
Which Chinese 2A3? 6456 
OK, for a first time I like the San Audio Kit. 6456 
The YO186 Strip Show 6456 
More on the 2A3 comparisons 6455 
It will be interesting…. 6455 
OPT impedence 6455 
More about the Plate Loading 6455 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6450 
2A3 data 6450 
The New 2A3 tubes 6450 
How many stages I need for 110dB sensitivity, smal... 6450 
How many stages and why... and who makes that 45 o... 6449 
Everything about everything. 6449 
Some very good points... and... possibly more logi... 6449 
Options, options, options.... 6449 
I think we agree overall 6449 
An IDHT with more gain? 6448 
You don't ask for much now, eh? 6448 
2A3 tube impressions 6443 
Interesting analogy 6443 
NOS 2A3 tubes versus new tubes 6443 
Hmmm, let me try this one again... 6443 
Sylvania 2A3 identification 6443 
A picture is worth a thousand micromhos? 6443 
I have more interest in the period tubes 6443 
Why NOS tubes? 6442 
The Holly Ignorance 6442 
Tube tasting 6442 
The cathodes’ flatulence? 6442 
Make mine thoriated please 6442 
Any Germans out there? 6442 
6E5P VS 6E6P 6442 
Vibrations? What do you with them? 6442 
Vibration in tubes and sounds 6442 
UX4 vs UX4ruskie 6441 
Ringing the tubes? I do not know how about that. 6441 
Tube sound and vibration 6441 
The thoughts collection about YO186? 6435 
The lights look green for the YO tube 6434 
"Melquiades" with YO-186. Something like... 6434 
My version of RE-604 and PX4 6433 
The YO186 tube sockets. 6433 
B4/B5 British made 6432 
The YO186’s sockets and prices 6432 
DHT 2A3 amplifier rectification 6431 
My attitude toward tube rectification. 6431 
Tu-be or not Tu-be, seems Tu-be the question. 6430 
It looks like DHT DSET is shaping up. 6429 
The Sylvania 2A3 NOS report 6426 
The Citizen Kane syndrome. 6426 
Sylvania 2A3 in a World without Color 6425 
Are NOS and new manufacture comparing oranges to o... 6425 
That all is incorrect in a way…. 6425 
NOS vs new 2A3 tubes 6425 
The identical operation environment? 6425 
Preferred 2A3 operating point 6425 
The sound of the 2A3 however? 6425 
Circuit modification for 2A3 optimization 6424 
How to get max power from 2A3 6424 
2A3 voltages, loads and realized output power 6424 
Optimal operation of 2A3: an experiment 6424 
Tubes, Whole Circuits, Expectations and Sound 6424 
Gain is not power. 6424 
2A3 amplifier modification & Optimization 6424 
Specialized DSET approach 6424 
6C33/2A3 DSET? 6424 
SET usable power and making the most of it 6424 
The 2A3 loading 6424 
DSET solution for EdgarHorn? 6424 
Optimizing the 2A3 6424 
How much to DSET a DSET 6424 
DSET for Titan 6424 
The Best of All Worlds 6424 
Multiamp setup 6423 
Optimizing the (NOS) 2A3... "KM-style"? 6423 
There are many opportunities, it all depends what ... 6423 
Modifying amplifer to optimize NOS 2A3 performance 6423 
Conceptualizing Melquiades DSET is done 6417 
2A3 and 400V supply 6417 
Pudding and the chicken wires 6416 
Another shot at numbers 6416 
How to cook the "uninformed" anode. 6416 
Okay, so this might work.... 6416 
The DHT Milq DSET, the prebuilt draft. 6416 
Looks good, but.... 6415 
2A3 with slightly lover filament voltage? 6415 
Less is more... usually. 6415 
Where to burn gain? how? and where to get beter st... 6414 
Stepping Out 6414 
Said to be good, but 6414 
Gain to lose 6414 
Why nothing is simple with this damn amp! 6414 
Another idea for losing gain 6414 
What's best 6414 
Options, options... 6414 
Actually, it is not so bad. 6414 
Other compromises... 6413 
Cathode vs. fixed with DHT 6412 
Is it glowing yet? 6392 
It is comming.... 6392 
The new MF channel. 6386 
I started to work on the Milq’s DHT Island. 6385 
Innerstage loading vs. OPT loading. 6377 
The intestage loading talk. 6374 
My playback feels like it is broken. 6369 
1 in 50? 6369 
Yes, it was after PP2000 6369 
Die Walküre soldering. 6368 
The post Die Walküre soldering 6367 
Another amp arond YO186 6366 
Gain? 6366 
The Unexpected problem with DHT Milq. 6366 
Simple is good 6365 
Ok, I am moving forward. 6365 
The Milq DSET is up. 6364 
My DH DSET – 2 days later. 6362 
Here is more data to reconcile. 6362 
Hm, that is interesting and unpleasant so far. 6361 
Ok, what do I want? 6361 
Let Go of Some Conceptual "Restrictions"? 6361 
The Milq DH DSET, the further thoughts in progress. 6361 
Crunching Numbers; Shaping Sound 6361 
How about the tweeter? 6360 
Tweeter Efficiency? 6360 
Safe and Sound 6360 
More mystery with tweeter but still on the subject. 6360 
Some clarifications. 6360 
How about that?!!! 6360 
Further considerations: DC-coupling. 6358 
Head Room 6358 
To kill the mandatory 13dB 6357 
DC coupling and killing 13db and driving 6e5p miller and.... 6357 
I do not think that it might be damaging… 6357 
Again with the PS 6357 
AKA J.C. Morrison’s amp but… 6355 
Parallel Universe 6355 
Melquiades HD MF DSET, Draft13. 6353 
Why I let other people build them... 6353 
Ok, it's going to right direction. 6353 
Ok, it looks already very close…. 6352 
The Loftinish-Whitish, well sort of…. 6349 
MF: the pre-final version. 6349 
Loftin-White? 6349 
Did anyone hear the PX4 amplifiers? 6349 
What Could use Improving at This Point? 6349 
The Milq’s MF front-end is done 6345 
Why I Let Other People Build Them, II 6345 
Define really quiet 6344 
Another variable of sound 6344 
Backlash? 6344 
Alternative filament supplies 6344 
I kind of faced a problem with AC 6344 
Going down the DC path 6343 
It is not about the “whole sound” but about “molec... 6343 
Molecular sound 6343 
AC-DC heater supply 6343 
The Tentlabs are $10 worth PS. 6343 
The unexpected resolution of AC vs. DC quandary. 6343 
The devil is less scared than it depicted. 6343 
Hiss or Hum 6343 
AC transformers 6343 
I have seen the Promised Land 6342 
OK, the choke noise is not a problem anymore 6342 
Ok, it is working fine but… 6341 
Divide and Conquer 6341 
The design phase is over. 6340 
The unexpected insanity! 6339 
Loading 6339 
Looking for inspiring ideas for 'universal' loadin... 6339 
A filaments Sherlock Holmes wanted. 6339 
Going the Distance 6339 
Read the f*** manual! 6339 
Agreed. 6339 
I agree 6339 
The filament transformer 6339 
Center-tap and options 6339 
Something like this…. 6339 
Avoiding "Dial-an-Amp" 6339 
The foreplay is going on. 6339 
Split balance 6338 
Further thoughts about my DH filaments 6338 
The Shuguang 2A3 tubes. 6338 
SHuguang 6338 
Going through…. 6337 
The 2.5V noise vs. 4V noise. 6336 
More about Shuguang 2A3C 6336 
Hum vs voltage 6336 
Meow about the tubes… 6336 
To Be a Content Cat 6336 
Completed! 6333 
Tradition 6333 
Absolutely beautiful! 6333 
The 'film' caps in PS 6332 
Science or religion 6332 
Mass Extinction 6332 
Electrolytics, technology and time 6332 
No more questions about PS capacitors. 6332 
Capacitor choices 6332 
Good time. Welcome back. Thanks God. 6331 
The minor day of Quartets. 6331 
Them's the Breaks 6331 
Eventually! 6330 
So Soon? 6330 
DHT MF channel and 6-ch amp: first conclusions 6330 
All Abuzz about Nothing 6329 
The wire for DC-coupling 6329 
The Dirt on DIY Backlash 6329 
DSET vs. the “better tubes”. 6329 
How to test the DH tubes properly? 6328 
Pairing up tubes for SE use 6327 
The DHT live reserve 6326 
Some interestng models 6326 
Eaten alive. 6326 
The tubey déjà vu? 6325 
The new concept of my output transformer. 6321 
The 4V takes a lead. 6317 
Listening the DH and the striped down version of M... 6314 
I kind of slowly learn what I need. 6314 
More HF from a transformer and DHT? 6312 
Since You Don't Need the Gain 6311 
Exiting the design mode? 6311 
Bye-bye the input divider on MF! 6311 
A few steps back and a gaint leap ahead. 6307 
Single-stage vs. DHT amp. 6306 
Setting up the new Playback 6305 
And the winner is… so far 6302 
If you like type 45... 6302 
Type 45... they're not all the same 6302 
Favorite Flavor? 6302 
The 45 times Meow... 6302 
The problem that I see is… 6302 
Running the 45 6302 
The 10Y...and bye bye Newton 6301 
The commentaries about everything. 6301 
Driver tube and biasing 6301 
DHT drivers 6301 
The ideas are worth trying? 6301 
A question about the polishing the things…. 6297 
The Particular Tube, I'm afraid... 6297 
Driving the 45... cathode first 6296 
ST or Globe; old or new... 6296 
Whatever sticks to the wall as an operation point ... 6296 
The attenuating crap in secondary. 6296 
Operating points and cathode current 6296 
The Burgeoning Opportunities! 6296 
Actually it is not so simple. 6296 
Resistors at the front 6295 
A minor alternation of a position 6295 
The era of enlightenment. 6292 
The devil is in the details.... 6292 
Constructing Sound 6292 
A new view on the DHT evaluation. 6291 
The “strange” YO186 6282 
The dead guy’s lessons. 6237 
2S4S and 2A3 6228 
Ho to use the YO186 6221 
YO 186 fundamental flavor 6221 
The YO-YO tube and "fundamentals" channel 6221 
The live without the YO186, again.... 6219 
Not anymore! 6208 
The very good YoYonisation! 6207 
….above and below two very clean channel. 6206 
The DHT and esoteric imaging deformation. 6193 
DHT, YO186, or??? 6193 
I had no idea how ‘different’ it is. 6140 
The Kazitsky Manufacturing and YO104, some history. 6139 
"Absolution and Eternal Refuge." 6136 
Sofia Electric Type 45 Mesh 6126 
The true association of YO186's Sounds. 5888 
All the Best from Burgundy 5888 
Cheesy tubes 5887 
Me and my DHT references… 5778 
Y0-186 in winter. 5681 
Y0-186 sounds like… 5680 
Rethinking the YO186 tube. 5649 
In My Dreams 5649 
Grunt from type 45? A ridicules comment. 5649 
Blame? 5648 
When good is not good enough. 5648 
45s, Drivers, and 45s 5648 
Hm, that was so simple after all! 5647 
How the YO186 was used. 5231 
What is old is new? 5230 
YO186 vs. type 45. 5229 
The YO186 is gone.... :-( 4778 
That sucks. 4778 
YO186 4776 
Hm, what the hell is going on? 4776 
I do not think that anybody but me would like YO186 4776 
A hallucination? 4773 
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