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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 6528 
One-stage Milq++ and the DHT's alleged tone 6527 
DHT Milq? 6527 
The DHT journey. 6527 
DHT tone 6527 
Well, why not? 6526 
Holding the Fort 6526 
My DHT experiment: Preface 6526 
Input tube and DC heaters 6525 
Reimyo Pat 777 6525 
My DHT experiment: Observations 6521 
DHT or 300B? 6521 
300B 6521 
Talking, perception and the grounds for objectively 6521 
The Wine Via the Wine Glass 6520 
Hence the confusion 6520 
My DHT experiment: some conclusions. 6520 
Reality Reconstruction is not a functionality. 6520 
My experience with DHTs 6520 
Pigmented coloration? 6520 
Dht-dht 6520 
Dynamic viscosity? 6520 
The Pallette preamp... 6520 
If one DHT is good, two must be better? 6520 
"soul" of tubes 6520 
There is a difference... 6520 
Vibration injection? 6520 
Homework # 4334 6520 
The 01A-71A-10Y-45 chain 6520 
Old valves have more soul! 6519 
Was it soul or soil? 6519 
It was just a heading 6519 
Adjustable color: TIMBRE LOCK? 6519 
Neutral or neutral/uncoloured? 6519 
..are lacking in power, dynamics and bandwidth. 6519 
Timbre-Lock. Not quite ready for prime time. 6519 
Injection of analog dither? 6519 
Subliminal signal 6519 
The idea of analog randomanization. 6519 
Okay, what Avicena Power Generator 6519 
I hope you will be hearing about it. 6518 
Avicenna = Arabian 6518 
Persian, not Arab 6518 
The “second solution” - a major disappointment 6518 
More words to describe "sux" please 6518 
Revolution 6518 
The non-melodramatic DHT? 6518 
One-stage DHTs 6517 
One other thing 6517 
One stage 6517 
Brewing, thinking and heating 6517 
Physical characteristics of electronic devices 6517 
I see the things differently. 6517 
Don't waste time being "creative" 6517 
The audiophile attitude 6517 
The where and why of design choices 6517 
Blah blah blah 6517 
Laconic Clarity vs. Comfort vs. Nostalgia 6517 
Do I need to be hissing? 6517 
...associated with lack of neutrality and colorati... 6517 
John Broskie's Partial feedback amplifier 6517 
Randomness vs. freedom and the Homework # 4334 6516 
What is randomness? 6516 
Those least three possibilities… 6516 
Randomness and Music's Prerogative 6516 
It works, … sort of. The revolution is canceled. 6516 
Thorsten Loesch’s article about DHT SETs 6514 
A Beautiful Mind 6513 
Some summary and conclusions from the first phase. 6511 
Second phase: revising requirement for my DHT objectives. 6496 
Tubes for your DHT amp 6496 
Abandoning Milq? 6496 
Will see how it goes.... 6496 
Single-stage Milq vs. Sun Audio VT-2A3 6494 
Topology and 2A3? 6494 
6SN7-2A3 amps? 6494 
Type Casting 6494 
Sun Audio SV-2A3 6494 
6sn7-2a3 6494 
Topology vs parts 6494 
For a DHT amp, you are listening to the power supply 6494 
The vintage tubes syndrome. 6494 
Parts Frenzy 6494 
Too many new sounds 6494 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6493 
New tubes 6492 
Milq bias vs. batery bias 6492 
The batteries are a tricky thing. 6492 
Swimming the ocean at night? 6492 
New 2A3 6492 
To kill of do not kill the capacitor. 6491 
The JJ Electronic amp. 6490 
JJ 2A3 and amp 6490 
Czech tubes 6488 
Single plated vs Double plated? 6488 
Mono plate 2A3 tubes 6488 
I suggested once VT52 tube 6487 
The 800R vs. 1800R vs. 5500R 6487 
YO-186 as the output tube. 6484 
Here she is. 6483 
Some talks about the new production tubes 6479 
New 2A3 tubes 6479 
Some thoughts about one-IHT vs. multiple-DHT 6479 
The Sun Audio with 6E5P 6478 
Multistage DHT circuits 6477 
Wrong tube or wrong topology – here is the question. 6476 
Emission Labs 2A3 6476 
Some comment and questions about then 2A3 talks. 6476 
Which Chinese 2A3? 6476 
OK, for a first time I like the San Audio Kit. 6476 
The YO186 Strip Show 6476 
More on the 2A3 comparisons 6475 
It will be interesting…. 6475 
OPT impedence 6475 
More about the Plate Loading 6475 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6470 
2A3 data 6470 
The New 2A3 tubes 6470 
How many stages I need for 110dB sensitivity, smal... 6470 
How many stages and why... and who makes that 45 o... 6469 
Everything about everything. 6469 
Some very good points... and... possibly more logi... 6469 
Options, options, options.... 6469 
I think we agree overall 6469 
An IDHT with more gain? 6468 
You don't ask for much now, eh? 6468 
2A3 tube impressions 6463 
Interesting analogy 6463 
NOS 2A3 tubes versus new tubes 6463 
Hmmm, let me try this one again... 6463 
Sylvania 2A3 identification 6463 
A picture is worth a thousand micromhos? 6463 
I have more interest in the period tubes 6463 
Why NOS tubes? 6462 
The Holly Ignorance 6462 
Tube tasting 6462 
The cathodes’ flatulence? 6462 
Make mine thoriated please 6462 
Any Germans out there? 6462 
6E5P VS 6E6P 6462 
Vibrations? What do you with them? 6462 
Vibration in tubes and sounds 6462 
UX4 vs UX4ruskie 6461 
Ringing the tubes? I do not know how about that. 6461 
Tube sound and vibration 6461 
The thoughts collection about YO186? 6455 
The lights look green for the YO tube 6454 
"Melquiades" with YO-186. Something like... 6454 
My version of RE-604 and PX4 6453 
The YO186 tube sockets. 6453 
B4/B5 British made 6452 
The YO186’s sockets and prices 6452 
DHT 2A3 amplifier rectification 6451 
My attitude toward tube rectification. 6451 
Tu-be or not Tu-be, seems Tu-be the question. 6450 
It looks like DHT DSET is shaping up. 6449 
The Sylvania 2A3 NOS report 6446 
The Citizen Kane syndrome. 6446 
Sylvania 2A3 in a World without Color 6445 
Are NOS and new manufacture comparing oranges to o... 6445 
That all is incorrect in a way…. 6445 
NOS vs new 2A3 tubes 6445 
The identical operation environment? 6445 
Preferred 2A3 operating point 6445 
The sound of the 2A3 however? 6445 
Circuit modification for 2A3 optimization 6444 
How to get max power from 2A3 6444 
2A3 voltages, loads and realized output power 6444 
Optimal operation of 2A3: an experiment 6444 
Tubes, Whole Circuits, Expectations and Sound 6444 
Gain is not power. 6444 
2A3 amplifier modification & Optimization 6444 
Specialized DSET approach 6444 
6C33/2A3 DSET? 6444 
SET usable power and making the most of it 6444 
The 2A3 loading 6444 
DSET solution for EdgarHorn? 6444 
Optimizing the 2A3 6444 
How much to DSET a DSET 6444 
DSET for Titan 6444 
The Best of All Worlds 6444 
Multiamp setup 6443 
Optimizing the (NOS) 2A3... "KM-style"? 6443 
There are many opportunities, it all depends what ... 6443 
Modifying amplifer to optimize NOS 2A3 performance 6443 
Conceptualizing Melquiades DSET is done 6437 
2A3 and 400V supply 6437 
Pudding and the chicken wires 6436 
Another shot at numbers 6436 
How to cook the "uninformed" anode. 6436 
Okay, so this might work.... 6436 
The DHT Milq DSET, the prebuilt draft. 6436 
Looks good, but.... 6435 
2A3 with slightly lover filament voltage? 6435 
Less is more... usually. 6435 
Where to burn gain? how? and where to get beter st... 6434 
Stepping Out 6434 
Said to be good, but 6434 
Gain to lose 6434 
Why nothing is simple with this damn amp! 6434 
Another idea for losing gain 6434 
What's best 6434 
Options, options... 6434 
Actually, it is not so bad. 6434 
Other compromises... 6433 
Cathode vs. fixed with DHT 6432 
Is it glowing yet? 6412 
It is comming.... 6412 
The new MF channel. 6406 
I started to work on the Milq’s DHT Island. 6405 
Innerstage loading vs. OPT loading. 6397 
The intestage loading talk. 6394 
My playback feels like it is broken. 6389 
1 in 50? 6389 
Yes, it was after PP2000 6389 
Die Walküre soldering. 6388 
The post Die Walküre soldering 6387 
Another amp arond YO186 6386 
Gain? 6386 
The Unexpected problem with DHT Milq. 6386 
Simple is good 6385 
Ok, I am moving forward. 6385 
The Milq DSET is up. 6384 
My DH DSET – 2 days later. 6382 
Here is more data to reconcile. 6382 
Hm, that is interesting and unpleasant so far. 6381 
Ok, what do I want? 6381 
Let Go of Some Conceptual "Restrictions"? 6381 
The Milq DH DSET, the further thoughts in progress. 6381 
Crunching Numbers; Shaping Sound 6381 
How about the tweeter? 6380 
Tweeter Efficiency? 6380 
Safe and Sound 6380 
More mystery with tweeter but still on the subject. 6380 
Some clarifications. 6380 
How about that?!!! 6380 
Further considerations: DC-coupling. 6378 
Head Room 6378 
To kill the mandatory 13dB 6377 
DC coupling and killing 13db and driving 6e5p miller and.... 6377 
I do not think that it might be damaging… 6377 
Again with the PS 6377 
AKA J.C. Morrison’s amp but… 6375 
Parallel Universe 6375 
Melquiades HD MF DSET, Draft13. 6373 
Why I let other people build them... 6373 
Ok, it's going to right direction. 6373 
Ok, it looks already very close…. 6372 
The Loftinish-Whitish, well sort of…. 6369 
MF: the pre-final version. 6369 
Loftin-White? 6369 
Did anyone hear the PX4 amplifiers? 6369 
What Could use Improving at This Point? 6369 
The Milq’s MF front-end is done 6365 
Why I Let Other People Build Them, II 6365 
Define really quiet 6364 
Another variable of sound 6364 
Backlash? 6364 
Alternative filament supplies 6364 
I kind of faced a problem with AC 6364 
Going down the DC path 6363 
It is not about the “whole sound” but about “molec... 6363 
Molecular sound 6363 
AC-DC heater supply 6363 
The Tentlabs are $10 worth PS. 6363 
The unexpected resolution of AC vs. DC quandary. 6363 
The devil is less scared than it depicted. 6363 
Hiss or Hum 6363 
AC transformers 6363 
I have seen the Promised Land 6362 
OK, the choke noise is not a problem anymore 6362 
Ok, it is working fine but… 6361 
Divide and Conquer 6361 
The design phase is over. 6360 
The unexpected insanity! 6359 
Loading 6359 
Looking for inspiring ideas for 'universal' loadin... 6359 
A filaments Sherlock Holmes wanted. 6359 
Going the Distance 6359 
Read the f*** manual! 6359 
Agreed. 6359 
I agree 6359 
The filament transformer 6359 
Center-tap and options 6359 
Something like this…. 6359 
Avoiding "Dial-an-Amp" 6359 
The foreplay is going on. 6359 
Split balance 6358 
Further thoughts about my DH filaments 6358 
The Shuguang 2A3 tubes. 6358 
SHuguang 6358 
Going through…. 6357 
The 2.5V noise vs. 4V noise. 6356 
More about Shuguang 2A3C 6356 
Hum vs voltage 6356 
Meow about the tubes… 6356 
To Be a Content Cat 6356 
Completed! 6353 
Tradition 6353 
Absolutely beautiful! 6353 
The 'film' caps in PS 6352 
Science or religion 6352 
Mass Extinction 6352 
Electrolytics, technology and time 6352 
No more questions about PS capacitors. 6352 
Capacitor choices 6352 
Good time. Welcome back. Thanks God. 6351 
The minor day of Quartets. 6351 
Them's the Breaks 6351 
Eventually! 6350 
So Soon? 6350 
DHT MF channel and 6-ch amp: first conclusions 6350 
All Abuzz about Nothing 6349 
The wire for DC-coupling 6349 
The Dirt on DIY Backlash 6349 
DSET vs. the “better tubes”. 6349 
How to test the DH tubes properly? 6348 
Pairing up tubes for SE use 6347 
The DHT live reserve 6346 
Some interestng models 6346 
Eaten alive. 6346 
The tubey déjà vu? 6345 
The new concept of my output transformer. 6341 
The 4V takes a lead. 6337 
Listening the DH and the striped down version of M... 6334 
I kind of slowly learn what I need. 6334 
More HF from a transformer and DHT? 6332 
Since You Don't Need the Gain 6331 
Exiting the design mode? 6331 
Bye-bye the input divider on MF! 6331 
A few steps back and a gaint leap ahead. 6327 
Single-stage vs. DHT amp. 6326 
Setting up the new Playback 6325 
And the winner is… so far 6322 
If you like type 45... 6322 
Type 45... they're not all the same 6322 
Favorite Flavor? 6322 
The 45 times Meow... 6322 
The problem that I see is… 6322 
Running the 45 6322 
The 10Y...and bye bye Newton 6321 
The commentaries about everything. 6321 
Driver tube and biasing 6321 
DHT drivers 6321 
The ideas are worth trying? 6321 
A question about the polishing the things…. 6317 
The Particular Tube, I'm afraid... 6317 
Driving the 45... cathode first 6316 
ST or Globe; old or new... 6316 
Whatever sticks to the wall as an operation point ... 6316 
The attenuating crap in secondary. 6316 
Operating points and cathode current 6316 
The Burgeoning Opportunities! 6316 
Actually it is not so simple. 6316 
Resistors at the front 6315 
A minor alternation of a position 6315 
The era of enlightenment. 6312 
The devil is in the details.... 6312 
Constructing Sound 6312 
A new view on the DHT evaluation. 6311 
The “strange” YO186 6302 
The dead guy’s lessons. 6257 
2S4S and 2A3 6248 
Ho to use the YO186 6241 
YO 186 fundamental flavor 6241 
The YO-YO tube and "fundamentals" channel 6241 
The live without the YO186, again.... 6239 
Not anymore! 6228 
The very good YoYonisation! 6227 
….above and below two very clean channel. 6226 
The DHT and esoteric imaging deformation. 6213 
DHT, YO186, or??? 6213 
I had no idea how ‘different’ it is. 6160 
The Kazitsky Manufacturing and YO104, some history. 6159 
"Absolution and Eternal Refuge." 6156 
Sofia Electric Type 45 Mesh 6146 
The true association of YO186's Sounds. 5908 
All the Best from Burgundy 5908 
Cheesy tubes 5907 
Me and my DHT references… 5798 
Y0-186 in winter. 5701 
Y0-186 sounds like… 5700 
Rethinking the YO186 tube. 5669 
In My Dreams 5669 
Grunt from type 45? A ridicules comment. 5669 
Blame? 5668 
When good is not good enough. 5668 
45s, Drivers, and 45s 5668 
Hm, that was so simple after all! 5667 
How the YO186 was used. 5251 
What is old is new? 5250 
YO186 vs. type 45. 5249 
The YO186 is gone.... :-( 4798 
That sucks. 4798 
YO186 4796 
Hm, what the hell is going on? 4796 
I do not think that anybody but me would like YO186 4796 
A hallucination? 4793 
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