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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 6514 
One-stage Milq++ and the DHT's alleged tone 6513 
DHT Milq? 6513 
The DHT journey. 6513 
DHT tone 6513 
Well, why not? 6512 
Holding the Fort 6512 
My DHT experiment: Preface 6512 
Input tube and DC heaters 6511 
Reimyo Pat 777 6511 
My DHT experiment: Observations 6507 
DHT or 300B? 6507 
300B 6507 
Talking, perception and the grounds for objectively 6507 
The Wine Via the Wine Glass 6506 
Hence the confusion 6506 
My DHT experiment: some conclusions. 6506 
Reality Reconstruction is not a functionality. 6506 
My experience with DHTs 6506 
Pigmented coloration? 6506 
Dht-dht 6506 
Dynamic viscosity? 6506 
The Pallette preamp... 6506 
If one DHT is good, two must be better? 6506 
"soul" of tubes 6506 
There is a difference... 6506 
Vibration injection? 6506 
Homework # 4334 6506 
The 01A-71A-10Y-45 chain 6506 
Old valves have more soul! 6505 
Was it soul or soil? 6505 
It was just a heading 6505 
Adjustable color: TIMBRE LOCK? 6505 
Neutral or neutral/uncoloured? 6505 
..are lacking in power, dynamics and bandwidth. 6505 
Timbre-Lock. Not quite ready for prime time. 6505 
Injection of analog dither? 6505 
Subliminal signal 6505 
The idea of analog randomanization. 6505 
Okay, what Avicena Power Generator 6505 
I hope you will be hearing about it. 6504 
Avicenna = Arabian 6504 
Persian, not Arab 6504 
The “second solution” - a major disappointment 6504 
More words to describe "sux" please 6504 
Revolution 6504 
The non-melodramatic DHT? 6504 
One-stage DHTs 6503 
One other thing 6503 
One stage 6503 
Brewing, thinking and heating 6503 
Physical characteristics of electronic devices 6503 
I see the things differently. 6503 
Don't waste time being "creative" 6503 
The audiophile attitude 6503 
The where and why of design choices 6503 
Blah blah blah 6503 
Laconic Clarity vs. Comfort vs. Nostalgia 6503 
Do I need to be hissing? 6503 
...associated with lack of neutrality and colorati... 6503 
John Broskie's Partial feedback amplifier 6503 
Randomness vs. freedom and the Homework # 4334 6502 
What is randomness? 6502 
Those least three possibilities… 6502 
Randomness and Music's Prerogative 6502 
It works, … sort of. The revolution is canceled. 6502 
Thorsten Loesch’s article about DHT SETs 6500 
A Beautiful Mind 6499 
Some summary and conclusions from the first phase. 6497 
Second phase: revising requirement for my DHT objectives. 6482 
Tubes for your DHT amp 6482 
Abandoning Milq? 6482 
Will see how it goes.... 6482 
Single-stage Milq vs. Sun Audio VT-2A3 6480 
Topology and 2A3? 6480 
6SN7-2A3 amps? 6480 
Type Casting 6480 
Sun Audio SV-2A3 6480 
6sn7-2a3 6480 
Topology vs parts 6480 
For a DHT amp, you are listening to the power supply 6480 
The vintage tubes syndrome. 6480 
Parts Frenzy 6480 
Too many new sounds 6480 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6479 
New tubes 6478 
Milq bias vs. batery bias 6478 
The batteries are a tricky thing. 6478 
Swimming the ocean at night? 6478 
New 2A3 6478 
To kill of do not kill the capacitor. 6477 
The JJ Electronic amp. 6476 
JJ 2A3 and amp 6476 
Czech tubes 6474 
Single plated vs Double plated? 6474 
Mono plate 2A3 tubes 6474 
I suggested once VT52 tube 6473 
The 800R vs. 1800R vs. 5500R 6473 
YO-186 as the output tube. 6470 
Here she is. 6469 
Some talks about the new production tubes 6465 
New 2A3 tubes 6465 
Some thoughts about one-IHT vs. multiple-DHT 6465 
The Sun Audio with 6E5P 6464 
Multistage DHT circuits 6463 
Wrong tube or wrong topology – here is the question. 6462 
Emission Labs 2A3 6462 
Some comment and questions about then 2A3 talks. 6462 
Which Chinese 2A3? 6462 
OK, for a first time I like the San Audio Kit. 6462 
The YO186 Strip Show 6462 
More on the 2A3 comparisons 6461 
It will be interesting…. 6461 
OPT impedence 6461 
More about the Plate Loading 6461 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6456 
2A3 data 6456 
The New 2A3 tubes 6456 
How many stages I need for 110dB sensitivity, smal... 6456 
How many stages and why... and who makes that 45 o... 6455 
Everything about everything. 6455 
Some very good points... and... possibly more logi... 6455 
Options, options, options.... 6455 
I think we agree overall 6455 
An IDHT with more gain? 6454 
You don't ask for much now, eh? 6454 
2A3 tube impressions 6449 
Interesting analogy 6449 
NOS 2A3 tubes versus new tubes 6449 
Hmmm, let me try this one again... 6449 
Sylvania 2A3 identification 6449 
A picture is worth a thousand micromhos? 6449 
I have more interest in the period tubes 6449 
Why NOS tubes? 6448 
The Holly Ignorance 6448 
Tube tasting 6448 
The cathodes’ flatulence? 6448 
Make mine thoriated please 6448 
Any Germans out there? 6448 
6E5P VS 6E6P 6448 
Vibrations? What do you with them? 6448 
Vibration in tubes and sounds 6448 
UX4 vs UX4ruskie 6447 
Ringing the tubes? I do not know how about that. 6447 
Tube sound and vibration 6447 
The thoughts collection about YO186? 6441 
The lights look green for the YO tube 6440 
"Melquiades" with YO-186. Something like... 6440 
My version of RE-604 and PX4 6439 
The YO186 tube sockets. 6439 
B4/B5 British made 6438 
The YO186’s sockets and prices 6438 
DHT 2A3 amplifier rectification 6437 
My attitude toward tube rectification. 6437 
Tu-be or not Tu-be, seems Tu-be the question. 6436 
It looks like DHT DSET is shaping up. 6435 
The Sylvania 2A3 NOS report 6432 
The Citizen Kane syndrome. 6432 
Sylvania 2A3 in a World without Color 6431 
Are NOS and new manufacture comparing oranges to o... 6431 
That all is incorrect in a way…. 6431 
NOS vs new 2A3 tubes 6431 
The identical operation environment? 6431 
Preferred 2A3 operating point 6431 
The sound of the 2A3 however? 6431 
Circuit modification for 2A3 optimization 6430 
How to get max power from 2A3 6430 
2A3 voltages, loads and realized output power 6430 
Optimal operation of 2A3: an experiment 6430 
Tubes, Whole Circuits, Expectations and Sound 6430 
Gain is not power. 6430 
2A3 amplifier modification & Optimization 6430 
Specialized DSET approach 6430 
6C33/2A3 DSET? 6430 
SET usable power and making the most of it 6430 
The 2A3 loading 6430 
DSET solution for EdgarHorn? 6430 
Optimizing the 2A3 6430 
How much to DSET a DSET 6430 
DSET for Titan 6430 
The Best of All Worlds 6430 
Multiamp setup 6429 
Optimizing the (NOS) 2A3... "KM-style"? 6429 
There are many opportunities, it all depends what ... 6429 
Modifying amplifer to optimize NOS 2A3 performance 6429 
Conceptualizing Melquiades DSET is done 6423 
2A3 and 400V supply 6423 
Pudding and the chicken wires 6422 
Another shot at numbers 6422 
How to cook the "uninformed" anode. 6422 
Okay, so this might work.... 6422 
The DHT Milq DSET, the prebuilt draft. 6422 
Looks good, but.... 6421 
2A3 with slightly lover filament voltage? 6421 
Less is more... usually. 6421 
Where to burn gain? how? and where to get beter st... 6420 
Stepping Out 6420 
Said to be good, but 6420 
Gain to lose 6420 
Why nothing is simple with this damn amp! 6420 
Another idea for losing gain 6420 
What's best 6420 
Options, options... 6420 
Actually, it is not so bad. 6420 
Other compromises... 6419 
Cathode vs. fixed with DHT 6418 
Is it glowing yet? 6398 
It is comming.... 6398 
The new MF channel. 6392 
I started to work on the Milq’s DHT Island. 6391 
Innerstage loading vs. OPT loading. 6383 
The intestage loading talk. 6380 
My playback feels like it is broken. 6375 
1 in 50? 6375 
Yes, it was after PP2000 6375 
Die Walküre soldering. 6374 
The post Die Walküre soldering 6373 
Another amp arond YO186 6372 
Gain? 6372 
The Unexpected problem with DHT Milq. 6372 
Simple is good 6371 
Ok, I am moving forward. 6371 
The Milq DSET is up. 6370 
My DH DSET – 2 days later. 6368 
Here is more data to reconcile. 6368 
Hm, that is interesting and unpleasant so far. 6367 
Ok, what do I want? 6367 
Let Go of Some Conceptual "Restrictions"? 6367 
The Milq DH DSET, the further thoughts in progress. 6367 
Crunching Numbers; Shaping Sound 6367 
How about the tweeter? 6366 
Tweeter Efficiency? 6366 
Safe and Sound 6366 
More mystery with tweeter but still on the subject. 6366 
Some clarifications. 6366 
How about that?!!! 6366 
Further considerations: DC-coupling. 6364 
Head Room 6364 
To kill the mandatory 13dB 6363 
DC coupling and killing 13db and driving 6e5p miller and.... 6363 
I do not think that it might be damaging… 6363 
Again with the PS 6363 
AKA J.C. Morrison’s amp but… 6361 
Parallel Universe 6361 
Melquiades HD MF DSET, Draft13. 6359 
Why I let other people build them... 6359 
Ok, it's going to right direction. 6359 
Ok, it looks already very close…. 6358 
The Loftinish-Whitish, well sort of…. 6355 
MF: the pre-final version. 6355 
Loftin-White? 6355 
Did anyone hear the PX4 amplifiers? 6355 
What Could use Improving at This Point? 6355 
The Milq’s MF front-end is done 6351 
Why I Let Other People Build Them, II 6351 
Define really quiet 6350 
Another variable of sound 6350 
Backlash? 6350 
Alternative filament supplies 6350 
I kind of faced a problem with AC 6350 
Going down the DC path 6349 
It is not about the “whole sound” but about “molec... 6349 
Molecular sound 6349 
AC-DC heater supply 6349 
The Tentlabs are $10 worth PS. 6349 
The unexpected resolution of AC vs. DC quandary. 6349 
The devil is less scared than it depicted. 6349 
Hiss or Hum 6349 
AC transformers 6349 
I have seen the Promised Land 6348 
OK, the choke noise is not a problem anymore 6348 
Ok, it is working fine but… 6347 
Divide and Conquer 6347 
The design phase is over. 6346 
The unexpected insanity! 6345 
Loading 6345 
Looking for inspiring ideas for 'universal' loadin... 6345 
A filaments Sherlock Holmes wanted. 6345 
Going the Distance 6345 
Read the f*** manual! 6345 
Agreed. 6345 
I agree 6345 
The filament transformer 6345 
Center-tap and options 6345 
Something like this…. 6345 
Avoiding "Dial-an-Amp" 6345 
The foreplay is going on. 6345 
Split balance 6344 
Further thoughts about my DH filaments 6344 
The Shuguang 2A3 tubes. 6344 
SHuguang 6344 
Going through…. 6343 
The 2.5V noise vs. 4V noise. 6342 
More about Shuguang 2A3C 6342 
Hum vs voltage 6342 
Meow about the tubes… 6342 
To Be a Content Cat 6342 
Completed! 6339 
Tradition 6339 
Absolutely beautiful! 6339 
The 'film' caps in PS 6338 
Science or religion 6338 
Mass Extinction 6338 
Electrolytics, technology and time 6338 
No more questions about PS capacitors. 6338 
Capacitor choices 6338 
Good time. Welcome back. Thanks God. 6337 
The minor day of Quartets. 6337 
Them's the Breaks 6337 
Eventually! 6336 
So Soon? 6336 
DHT MF channel and 6-ch amp: first conclusions 6336 
All Abuzz about Nothing 6335 
The wire for DC-coupling 6335 
The Dirt on DIY Backlash 6335 
DSET vs. the “better tubes”. 6335 
How to test the DH tubes properly? 6334 
Pairing up tubes for SE use 6333 
The DHT live reserve 6332 
Some interestng models 6332 
Eaten alive. 6332 
The tubey déjà vu? 6331 
The new concept of my output transformer. 6327 
The 4V takes a lead. 6323 
Listening the DH and the striped down version of M... 6320 
I kind of slowly learn what I need. 6320 
More HF from a transformer and DHT? 6318 
Since You Don't Need the Gain 6317 
Exiting the design mode? 6317 
Bye-bye the input divider on MF! 6317 
A few steps back and a gaint leap ahead. 6313 
Single-stage vs. DHT amp. 6312 
Setting up the new Playback 6311 
And the winner is… so far 6308 
If you like type 45... 6308 
Type 45... they're not all the same 6308 
Favorite Flavor? 6308 
The 45 times Meow... 6308 
The problem that I see is… 6308 
Running the 45 6308 
The 10Y...and bye bye Newton 6307 
The commentaries about everything. 6307 
Driver tube and biasing 6307 
DHT drivers 6307 
The ideas are worth trying? 6307 
A question about the polishing the things…. 6303 
The Particular Tube, I'm afraid... 6303 
Driving the 45... cathode first 6302 
ST or Globe; old or new... 6302 
Whatever sticks to the wall as an operation point ... 6302 
The attenuating crap in secondary. 6302 
Operating points and cathode current 6302 
The Burgeoning Opportunities! 6302 
Actually it is not so simple. 6302 
Resistors at the front 6301 
A minor alternation of a position 6301 
The era of enlightenment. 6298 
The devil is in the details.... 6298 
Constructing Sound 6298 
A new view on the DHT evaluation. 6297 
The “strange” YO186 6288 
The dead guy’s lessons. 6243 
2S4S and 2A3 6234 
Ho to use the YO186 6227 
YO 186 fundamental flavor 6227 
The YO-YO tube and "fundamentals" channel 6227 
The live without the YO186, again.... 6225 
Not anymore! 6214 
The very good YoYonisation! 6213 
….above and below two very clean channel. 6212 
The DHT and esoteric imaging deformation. 6199 
DHT, YO186, or??? 6199 
I had no idea how ‘different’ it is. 6146 
The Kazitsky Manufacturing and YO104, some history. 6145 
"Absolution and Eternal Refuge." 6142 
Sofia Electric Type 45 Mesh 6132 
The true association of YO186's Sounds. 5894 
All the Best from Burgundy 5894 
Cheesy tubes 5893 
Me and my DHT references… 5784 
Y0-186 in winter. 5687 
Y0-186 sounds like… 5686 
Rethinking the YO186 tube. 5655 
In My Dreams 5655 
Grunt from type 45? A ridicules comment. 5655 
Blame? 5654 
When good is not good enough. 5654 
45s, Drivers, and 45s 5654 
Hm, that was so simple after all! 5653 
How the YO186 was used. 5237 
What is old is new? 5236 
YO186 vs. type 45. 5235 
The YO186 is gone.... :-( 4784 
That sucks. 4784 
YO186 4782 
Hm, what the hell is going on? 4782 
I do not think that anybody but me would like YO186 4782 
A hallucination? 4779 
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