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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 6500 
One-stage Milq++ and the DHT's alleged tone 6499 
DHT Milq? 6499 
The DHT journey. 6499 
DHT tone 6499 
Well, why not? 6498 
Holding the Fort 6498 
My DHT experiment: Preface 6498 
Input tube and DC heaters 6497 
Reimyo Pat 777 6497 
My DHT experiment: Observations 6493 
DHT or 300B? 6493 
300B 6493 
Talking, perception and the grounds for objectively 6493 
The Wine Via the Wine Glass 6492 
Hence the confusion 6492 
My DHT experiment: some conclusions. 6492 
Reality Reconstruction is not a functionality. 6492 
My experience with DHTs 6492 
Pigmented coloration? 6492 
Dht-dht 6492 
Dynamic viscosity? 6492 
The Pallette preamp... 6492 
If one DHT is good, two must be better? 6492 
"soul" of tubes 6492 
There is a difference... 6492 
Vibration injection? 6492 
Homework # 4334 6492 
The 01A-71A-10Y-45 chain 6492 
Old valves have more soul! 6491 
Was it soul or soil? 6491 
It was just a heading 6491 
Adjustable color: TIMBRE LOCK? 6491 
Neutral or neutral/uncoloured? 6491 
..are lacking in power, dynamics and bandwidth. 6491 
Timbre-Lock. Not quite ready for prime time. 6491 
Injection of analog dither? 6491 
Subliminal signal 6491 
The idea of analog randomanization. 6491 
Okay, what Avicena Power Generator 6491 
I hope you will be hearing about it. 6490 
Avicenna = Arabian 6490 
Persian, not Arab 6490 
The “second solution” - a major disappointment 6490 
More words to describe "sux" please 6490 
Revolution 6490 
The non-melodramatic DHT? 6490 
One-stage DHTs 6489 
One other thing 6489 
One stage 6489 
Brewing, thinking and heating 6489 
Physical characteristics of electronic devices 6489 
I see the things differently. 6489 
Don't waste time being "creative" 6489 
The audiophile attitude 6489 
The where and why of design choices 6489 
Blah blah blah 6489 
Laconic Clarity vs. Comfort vs. Nostalgia 6489 
Do I need to be hissing? 6489 
...associated with lack of neutrality and colorati... 6489 
John Broskie's Partial feedback amplifier 6489 
Randomness vs. freedom and the Homework # 4334 6488 
What is randomness? 6488 
Those least three possibilities… 6488 
Randomness and Music's Prerogative 6488 
It works, … sort of. The revolution is canceled. 6488 
Thorsten Loesch’s article about DHT SETs 6486 
A Beautiful Mind 6485 
Some summary and conclusions from the first phase. 6483 
Second phase: revising requirement for my DHT objectives. 6468 
Tubes for your DHT amp 6468 
Abandoning Milq? 6468 
Will see how it goes.... 6468 
Single-stage Milq vs. Sun Audio VT-2A3 6466 
Topology and 2A3? 6466 
6SN7-2A3 amps? 6466 
Type Casting 6466 
Sun Audio SV-2A3 6466 
6sn7-2a3 6466 
Topology vs parts 6466 
For a DHT amp, you are listening to the power supply 6466 
The vintage tubes syndrome. 6466 
Parts Frenzy 6466 
Too many new sounds 6466 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6465 
New tubes 6464 
Milq bias vs. batery bias 6464 
The batteries are a tricky thing. 6464 
Swimming the ocean at night? 6464 
New 2A3 6464 
To kill of do not kill the capacitor. 6463 
The JJ Electronic amp. 6462 
JJ 2A3 and amp 6462 
Czech tubes 6460 
Single plated vs Double plated? 6460 
Mono plate 2A3 tubes 6460 
I suggested once VT52 tube 6459 
The 800R vs. 1800R vs. 5500R 6459 
YO-186 as the output tube. 6456 
Here she is. 6455 
Some talks about the new production tubes 6451 
New 2A3 tubes 6451 
Some thoughts about one-IHT vs. multiple-DHT 6451 
The Sun Audio with 6E5P 6450 
Multistage DHT circuits 6449 
Wrong tube or wrong topology – here is the question. 6448 
Emission Labs 2A3 6448 
Some comment and questions about then 2A3 talks. 6448 
Which Chinese 2A3? 6448 
OK, for a first time I like the San Audio Kit. 6448 
The YO186 Strip Show 6448 
More on the 2A3 comparisons 6447 
It will be interesting…. 6447 
OPT impedence 6447 
More about the Plate Loading 6447 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6442 
2A3 data 6442 
The New 2A3 tubes 6442 
How many stages I need for 110dB sensitivity, smal... 6442 
How many stages and why... and who makes that 45 o... 6441 
Everything about everything. 6441 
Some very good points... and... possibly more logi... 6441 
Options, options, options.... 6441 
I think we agree overall 6441 
An IDHT with more gain? 6440 
You don't ask for much now, eh? 6440 
2A3 tube impressions 6435 
Interesting analogy 6435 
NOS 2A3 tubes versus new tubes 6435 
Hmmm, let me try this one again... 6435 
Sylvania 2A3 identification 6435 
A picture is worth a thousand micromhos? 6435 
I have more interest in the period tubes 6435 
Why NOS tubes? 6434 
The Holly Ignorance 6434 
Tube tasting 6434 
The cathodes’ flatulence? 6434 
Make mine thoriated please 6434 
Any Germans out there? 6434 
6E5P VS 6E6P 6434 
Vibrations? What do you with them? 6434 
Vibration in tubes and sounds 6434 
UX4 vs UX4ruskie 6433 
Ringing the tubes? I do not know how about that. 6433 
Tube sound and vibration 6433 
The thoughts collection about YO186? 6427 
The lights look green for the YO tube 6426 
"Melquiades" with YO-186. Something like... 6426 
My version of RE-604 and PX4 6425 
The YO186 tube sockets. 6425 
B4/B5 British made 6424 
The YO186’s sockets and prices 6424 
DHT 2A3 amplifier rectification 6423 
My attitude toward tube rectification. 6423 
Tu-be or not Tu-be, seems Tu-be the question. 6422 
It looks like DHT DSET is shaping up. 6421 
The Sylvania 2A3 NOS report 6418 
The Citizen Kane syndrome. 6418 
Sylvania 2A3 in a World without Color 6417 
Are NOS and new manufacture comparing oranges to o... 6417 
That all is incorrect in a way…. 6417 
NOS vs new 2A3 tubes 6417 
The identical operation environment? 6417 
Preferred 2A3 operating point 6417 
The sound of the 2A3 however? 6417 
Circuit modification for 2A3 optimization 6416 
How to get max power from 2A3 6416 
2A3 voltages, loads and realized output power 6416 
Optimal operation of 2A3: an experiment 6416 
Tubes, Whole Circuits, Expectations and Sound 6416 
Gain is not power. 6416 
2A3 amplifier modification & Optimization 6416 
Specialized DSET approach 6416 
6C33/2A3 DSET? 6416 
SET usable power and making the most of it 6416 
The 2A3 loading 6416 
DSET solution for EdgarHorn? 6416 
Optimizing the 2A3 6416 
How much to DSET a DSET 6416 
DSET for Titan 6416 
The Best of All Worlds 6416 
Multiamp setup 6415 
Optimizing the (NOS) 2A3... "KM-style"? 6415 
There are many opportunities, it all depends what ... 6415 
Modifying amplifer to optimize NOS 2A3 performance 6415 
Conceptualizing Melquiades DSET is done 6409 
2A3 and 400V supply 6409 
Pudding and the chicken wires 6408 
Another shot at numbers 6408 
How to cook the "uninformed" anode. 6408 
Okay, so this might work.... 6408 
The DHT Milq DSET, the prebuilt draft. 6408 
Looks good, but.... 6407 
2A3 with slightly lover filament voltage? 6407 
Less is more... usually. 6407 
Where to burn gain? how? and where to get beter st... 6406 
Stepping Out 6406 
Said to be good, but 6406 
Gain to lose 6406 
Why nothing is simple with this damn amp! 6406 
Another idea for losing gain 6406 
What's best 6406 
Options, options... 6406 
Actually, it is not so bad. 6406 
Other compromises... 6405 
Cathode vs. fixed with DHT 6404 
Is it glowing yet? 6384 
It is comming.... 6384 
The new MF channel. 6378 
I started to work on the Milq’s DHT Island. 6377 
Innerstage loading vs. OPT loading. 6369 
The intestage loading talk. 6366 
My playback feels like it is broken. 6361 
1 in 50? 6361 
Yes, it was after PP2000 6361 
Die Walküre soldering. 6360 
The post Die Walküre soldering 6359 
Another amp arond YO186 6358 
Gain? 6358 
The Unexpected problem with DHT Milq. 6358 
Simple is good 6357 
Ok, I am moving forward. 6357 
The Milq DSET is up. 6356 
My DH DSET – 2 days later. 6354 
Here is more data to reconcile. 6354 
Hm, that is interesting and unpleasant so far. 6353 
Ok, what do I want? 6353 
Let Go of Some Conceptual "Restrictions"? 6353 
The Milq DH DSET, the further thoughts in progress. 6353 
Crunching Numbers; Shaping Sound 6353 
How about the tweeter? 6352 
Tweeter Efficiency? 6352 
Safe and Sound 6352 
More mystery with tweeter but still on the subject. 6352 
Some clarifications. 6352 
How about that?!!! 6352 
Further considerations: DC-coupling. 6350 
Head Room 6350 
To kill the mandatory 13dB 6349 
DC coupling and killing 13db and driving 6e5p miller and.... 6349 
I do not think that it might be damaging… 6349 
Again with the PS 6349 
AKA J.C. Morrison’s amp but… 6347 
Parallel Universe 6347 
Melquiades HD MF DSET, Draft13. 6345 
Why I let other people build them... 6345 
Ok, it's going to right direction. 6345 
Ok, it looks already very close…. 6344 
The Loftinish-Whitish, well sort of…. 6341 
MF: the pre-final version. 6341 
Loftin-White? 6341 
Did anyone hear the PX4 amplifiers? 6341 
What Could use Improving at This Point? 6341 
The Milq’s MF front-end is done 6337 
Why I Let Other People Build Them, II 6337 
Define really quiet 6336 
Another variable of sound 6336 
Backlash? 6336 
Alternative filament supplies 6336 
I kind of faced a problem with AC 6336 
Going down the DC path 6335 
It is not about the “whole sound” but about “molec... 6335 
Molecular sound 6335 
AC-DC heater supply 6335 
The Tentlabs are $10 worth PS. 6335 
The unexpected resolution of AC vs. DC quandary. 6335 
The devil is less scared than it depicted. 6335 
Hiss or Hum 6335 
AC transformers 6335 
I have seen the Promised Land 6334 
OK, the choke noise is not a problem anymore 6334 
Ok, it is working fine but… 6333 
Divide and Conquer 6333 
The design phase is over. 6332 
The unexpected insanity! 6331 
Loading 6331 
Looking for inspiring ideas for 'universal' loadin... 6331 
A filaments Sherlock Holmes wanted. 6331 
Going the Distance 6331 
Read the f*** manual! 6331 
Agreed. 6331 
I agree 6331 
The filament transformer 6331 
Center-tap and options 6331 
Something like this…. 6331 
Avoiding "Dial-an-Amp" 6331 
The foreplay is going on. 6331 
Split balance 6330 
Further thoughts about my DH filaments 6330 
The Shuguang 2A3 tubes. 6330 
SHuguang 6330 
Going through…. 6329 
The 2.5V noise vs. 4V noise. 6328 
More about Shuguang 2A3C 6328 
Hum vs voltage 6328 
Meow about the tubes… 6328 
To Be a Content Cat 6328 
Completed! 6325 
Tradition 6325 
Absolutely beautiful! 6325 
The 'film' caps in PS 6324 
Science or religion 6324 
Mass Extinction 6324 
Electrolytics, technology and time 6324 
No more questions about PS capacitors. 6324 
Capacitor choices 6324 
Good time. Welcome back. Thanks God. 6323 
The minor day of Quartets. 6323 
Them's the Breaks 6323 
Eventually! 6322 
So Soon? 6322 
DHT MF channel and 6-ch amp: first conclusions 6322 
All Abuzz about Nothing 6321 
The wire for DC-coupling 6321 
The Dirt on DIY Backlash 6321 
DSET vs. the “better tubes”. 6321 
How to test the DH tubes properly? 6320 
Pairing up tubes for SE use 6319 
The DHT live reserve 6318 
Some interestng models 6318 
Eaten alive. 6318 
The tubey déjà vu? 6317 
The new concept of my output transformer. 6313 
The 4V takes a lead. 6309 
Listening the DH and the striped down version of M... 6306 
I kind of slowly learn what I need. 6306 
More HF from a transformer and DHT? 6304 
Since You Don't Need the Gain 6303 
Exiting the design mode? 6303 
Bye-bye the input divider on MF! 6303 
A few steps back and a gaint leap ahead. 6299 
Single-stage vs. DHT amp. 6298 
Setting up the new Playback 6297 
And the winner is… so far 6294 
If you like type 45... 6294 
Type 45... they're not all the same 6294 
Favorite Flavor? 6294 
The 45 times Meow... 6294 
The problem that I see is… 6294 
Running the 45 6294 
The 10Y...and bye bye Newton 6293 
The commentaries about everything. 6293 
Driver tube and biasing 6293 
DHT drivers 6293 
The ideas are worth trying? 6293 
A question about the polishing the things…. 6289 
The Particular Tube, I'm afraid... 6289 
Driving the 45... cathode first 6288 
ST or Globe; old or new... 6288 
Whatever sticks to the wall as an operation point ... 6288 
The attenuating crap in secondary. 6288 
Operating points and cathode current 6288 
The Burgeoning Opportunities! 6288 
Actually it is not so simple. 6288 
Resistors at the front 6287 
A minor alternation of a position 6287 
The era of enlightenment. 6284 
The devil is in the details.... 6284 
Constructing Sound 6284 
A new view on the DHT evaluation. 6283 
The “strange” YO186 6274 
The dead guy’s lessons. 6229 
2S4S and 2A3 6220 
Ho to use the YO186 6213 
YO 186 fundamental flavor 6213 
The YO-YO tube and "fundamentals" channel 6213 
The live without the YO186, again.... 6211 
Not anymore! 6200 
The very good YoYonisation! 6199 
….above and below two very clean channel. 6198 
The DHT and esoteric imaging deformation. 6185 
DHT, YO186, or??? 6185 
I had no idea how ‘different’ it is. 6132 
The Kazitsky Manufacturing and YO104, some history. 6131 
"Absolution and Eternal Refuge." 6128 
Sofia Electric Type 45 Mesh 6118 
The true association of YO186's Sounds. 5880 
All the Best from Burgundy 5880 
Cheesy tubes 5879 
Me and my DHT references… 5770 
Y0-186 in winter. 5673 
Y0-186 sounds like… 5672 
Rethinking the YO186 tube. 5641 
In My Dreams 5641 
Grunt from type 45? A ridicules comment. 5641 
Blame? 5640 
When good is not good enough. 5640 
45s, Drivers, and 45s 5640 
Hm, that was so simple after all! 5639 
How the YO186 was used. 5223 
What is old is new? 5222 
YO186 vs. type 45. 5221 
The YO186 is gone.... :-( 4770 
That sucks. 4770 
YO186 4768 
Hm, what the hell is going on? 4768 
I do not think that anybody but me would like YO186 4768 
A hallucination? 4765 
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