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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 6512 
One-stage Milq++ and the DHT's alleged tone 6511 
DHT Milq? 6511 
The DHT journey. 6511 
DHT tone 6511 
Well, why not? 6510 
Holding the Fort 6510 
My DHT experiment: Preface 6510 
Input tube and DC heaters 6509 
Reimyo Pat 777 6509 
My DHT experiment: Observations 6505 
DHT or 300B? 6505 
300B 6505 
Talking, perception and the grounds for objectively 6505 
The Wine Via the Wine Glass 6504 
Hence the confusion 6504 
My DHT experiment: some conclusions. 6504 
Reality Reconstruction is not a functionality. 6504 
My experience with DHTs 6504 
Pigmented coloration? 6504 
Dht-dht 6504 
Dynamic viscosity? 6504 
The Pallette preamp... 6504 
If one DHT is good, two must be better? 6504 
"soul" of tubes 6504 
There is a difference... 6504 
Vibration injection? 6504 
Homework # 4334 6504 
The 01A-71A-10Y-45 chain 6504 
Old valves have more soul! 6503 
Was it soul or soil? 6503 
It was just a heading 6503 
Adjustable color: TIMBRE LOCK? 6503 
Neutral or neutral/uncoloured? 6503 
..are lacking in power, dynamics and bandwidth. 6503 
Timbre-Lock. Not quite ready for prime time. 6503 
Injection of analog dither? 6503 
Subliminal signal 6503 
The idea of analog randomanization. 6503 
Okay, what Avicena Power Generator 6503 
I hope you will be hearing about it. 6502 
Avicenna = Arabian 6502 
Persian, not Arab 6502 
The “second solution” - a major disappointment 6502 
More words to describe "sux" please 6502 
Revolution 6502 
The non-melodramatic DHT? 6502 
One-stage DHTs 6501 
One other thing 6501 
One stage 6501 
Brewing, thinking and heating 6501 
Physical characteristics of electronic devices 6501 
I see the things differently. 6501 
Don't waste time being "creative" 6501 
The audiophile attitude 6501 
The where and why of design choices 6501 
Blah blah blah 6501 
Laconic Clarity vs. Comfort vs. Nostalgia 6501 
Do I need to be hissing? 6501 
...associated with lack of neutrality and colorati... 6501 
John Broskie's Partial feedback amplifier 6501 
Randomness vs. freedom and the Homework # 4334 6500 
What is randomness? 6500 
Those least three possibilities… 6500 
Randomness and Music's Prerogative 6500 
It works, … sort of. The revolution is canceled. 6500 
Thorsten Loesch’s article about DHT SETs 6498 
A Beautiful Mind 6497 
Some summary and conclusions from the first phase. 6495 
Second phase: revising requirement for my DHT objectives. 6480 
Tubes for your DHT amp 6480 
Abandoning Milq? 6480 
Will see how it goes.... 6480 
Single-stage Milq vs. Sun Audio VT-2A3 6478 
Topology and 2A3? 6478 
6SN7-2A3 amps? 6478 
Type Casting 6478 
Sun Audio SV-2A3 6478 
6sn7-2a3 6478 
Topology vs parts 6478 
For a DHT amp, you are listening to the power supply 6478 
The vintage tubes syndrome. 6478 
Parts Frenzy 6478 
Too many new sounds 6478 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6477 
New tubes 6476 
Milq bias vs. batery bias 6476 
The batteries are a tricky thing. 6476 
Swimming the ocean at night? 6476 
New 2A3 6476 
To kill of do not kill the capacitor. 6475 
The JJ Electronic amp. 6474 
JJ 2A3 and amp 6474 
Czech tubes 6472 
Single plated vs Double plated? 6472 
Mono plate 2A3 tubes 6472 
I suggested once VT52 tube 6471 
The 800R vs. 1800R vs. 5500R 6471 
YO-186 as the output tube. 6468 
Here she is. 6467 
Some talks about the new production tubes 6463 
New 2A3 tubes 6463 
Some thoughts about one-IHT vs. multiple-DHT 6463 
The Sun Audio with 6E5P 6462 
Multistage DHT circuits 6461 
Wrong tube or wrong topology – here is the question. 6460 
Emission Labs 2A3 6460 
Some comment and questions about then 2A3 talks. 6460 
Which Chinese 2A3? 6460 
OK, for a first time I like the San Audio Kit. 6460 
The YO186 Strip Show 6460 
More on the 2A3 comparisons 6459 
It will be interesting…. 6459 
OPT impedence 6459 
More about the Plate Loading 6459 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6454 
2A3 data 6454 
The New 2A3 tubes 6454 
How many stages I need for 110dB sensitivity, smal... 6454 
How many stages and why... and who makes that 45 o... 6453 
Everything about everything. 6453 
Some very good points... and... possibly more logi... 6453 
Options, options, options.... 6453 
I think we agree overall 6453 
An IDHT with more gain? 6452 
You don't ask for much now, eh? 6452 
2A3 tube impressions 6447 
Interesting analogy 6447 
NOS 2A3 tubes versus new tubes 6447 
Hmmm, let me try this one again... 6447 
Sylvania 2A3 identification 6447 
A picture is worth a thousand micromhos? 6447 
I have more interest in the period tubes 6447 
Why NOS tubes? 6446 
The Holly Ignorance 6446 
Tube tasting 6446 
The cathodes’ flatulence? 6446 
Make mine thoriated please 6446 
Any Germans out there? 6446 
6E5P VS 6E6P 6446 
Vibrations? What do you with them? 6446 
Vibration in tubes and sounds 6446 
UX4 vs UX4ruskie 6445 
Ringing the tubes? I do not know how about that. 6445 
Tube sound and vibration 6445 
The thoughts collection about YO186? 6439 
The lights look green for the YO tube 6438 
"Melquiades" with YO-186. Something like... 6438 
My version of RE-604 and PX4 6437 
The YO186 tube sockets. 6437 
B4/B5 British made 6436 
The YO186’s sockets and prices 6436 
DHT 2A3 amplifier rectification 6435 
My attitude toward tube rectification. 6435 
Tu-be or not Tu-be, seems Tu-be the question. 6434 
It looks like DHT DSET is shaping up. 6433 
The Sylvania 2A3 NOS report 6430 
The Citizen Kane syndrome. 6430 
Sylvania 2A3 in a World without Color 6429 
Are NOS and new manufacture comparing oranges to o... 6429 
That all is incorrect in a way…. 6429 
NOS vs new 2A3 tubes 6429 
The identical operation environment? 6429 
Preferred 2A3 operating point 6429 
The sound of the 2A3 however? 6429 
Circuit modification for 2A3 optimization 6428 
How to get max power from 2A3 6428 
2A3 voltages, loads and realized output power 6428 
Optimal operation of 2A3: an experiment 6428 
Tubes, Whole Circuits, Expectations and Sound 6428 
Gain is not power. 6428 
2A3 amplifier modification & Optimization 6428 
Specialized DSET approach 6428 
6C33/2A3 DSET? 6428 
SET usable power and making the most of it 6428 
The 2A3 loading 6428 
DSET solution for EdgarHorn? 6428 
Optimizing the 2A3 6428 
How much to DSET a DSET 6428 
DSET for Titan 6428 
The Best of All Worlds 6428 
Multiamp setup 6427 
Optimizing the (NOS) 2A3... "KM-style"? 6427 
There are many opportunities, it all depends what ... 6427 
Modifying amplifer to optimize NOS 2A3 performance 6427 
Conceptualizing Melquiades DSET is done 6421 
2A3 and 400V supply 6421 
Pudding and the chicken wires 6420 
Another shot at numbers 6420 
How to cook the "uninformed" anode. 6420 
Okay, so this might work.... 6420 
The DHT Milq DSET, the prebuilt draft. 6420 
Looks good, but.... 6419 
2A3 with slightly lover filament voltage? 6419 
Less is more... usually. 6419 
Where to burn gain? how? and where to get beter st... 6418 
Stepping Out 6418 
Said to be good, but 6418 
Gain to lose 6418 
Why nothing is simple with this damn amp! 6418 
Another idea for losing gain 6418 
What's best 6418 
Options, options... 6418 
Actually, it is not so bad. 6418 
Other compromises... 6417 
Cathode vs. fixed with DHT 6416 
Is it glowing yet? 6396 
It is comming.... 6396 
The new MF channel. 6390 
I started to work on the Milq’s DHT Island. 6389 
Innerstage loading vs. OPT loading. 6381 
The intestage loading talk. 6378 
My playback feels like it is broken. 6373 
1 in 50? 6373 
Yes, it was after PP2000 6373 
Die Walküre soldering. 6372 
The post Die Walküre soldering 6371 
Another amp arond YO186 6370 
Gain? 6370 
The Unexpected problem with DHT Milq. 6370 
Simple is good 6369 
Ok, I am moving forward. 6369 
The Milq DSET is up. 6368 
My DH DSET – 2 days later. 6366 
Here is more data to reconcile. 6366 
Hm, that is interesting and unpleasant so far. 6365 
Ok, what do I want? 6365 
Let Go of Some Conceptual "Restrictions"? 6365 
The Milq DH DSET, the further thoughts in progress. 6365 
Crunching Numbers; Shaping Sound 6365 
How about the tweeter? 6364 
Tweeter Efficiency? 6364 
Safe and Sound 6364 
More mystery with tweeter but still on the subject. 6364 
Some clarifications. 6364 
How about that?!!! 6364 
Further considerations: DC-coupling. 6362 
Head Room 6362 
To kill the mandatory 13dB 6361 
DC coupling and killing 13db and driving 6e5p miller and.... 6361 
I do not think that it might be damaging… 6361 
Again with the PS 6361 
AKA J.C. Morrison’s amp but… 6359 
Parallel Universe 6359 
Melquiades HD MF DSET, Draft13. 6357 
Why I let other people build them... 6357 
Ok, it's going to right direction. 6357 
Ok, it looks already very close…. 6356 
The Loftinish-Whitish, well sort of…. 6353 
MF: the pre-final version. 6353 
Loftin-White? 6353 
Did anyone hear the PX4 amplifiers? 6353 
What Could use Improving at This Point? 6353 
The Milq’s MF front-end is done 6349 
Why I Let Other People Build Them, II 6349 
Define really quiet 6348 
Another variable of sound 6348 
Backlash? 6348 
Alternative filament supplies 6348 
I kind of faced a problem with AC 6348 
Going down the DC path 6347 
It is not about the “whole sound” but about “molec... 6347 
Molecular sound 6347 
AC-DC heater supply 6347 
The Tentlabs are $10 worth PS. 6347 
The unexpected resolution of AC vs. DC quandary. 6347 
The devil is less scared than it depicted. 6347 
Hiss or Hum 6347 
AC transformers 6347 
I have seen the Promised Land 6346 
OK, the choke noise is not a problem anymore 6346 
Ok, it is working fine but… 6345 
Divide and Conquer 6345 
The design phase is over. 6344 
The unexpected insanity! 6343 
Loading 6343 
Looking for inspiring ideas for 'universal' loadin... 6343 
A filaments Sherlock Holmes wanted. 6343 
Going the Distance 6343 
Read the f*** manual! 6343 
Agreed. 6343 
I agree 6343 
The filament transformer 6343 
Center-tap and options 6343 
Something like this…. 6343 
Avoiding "Dial-an-Amp" 6343 
The foreplay is going on. 6343 
Split balance 6342 
Further thoughts about my DH filaments 6342 
The Shuguang 2A3 tubes. 6342 
SHuguang 6342 
Going through…. 6341 
The 2.5V noise vs. 4V noise. 6340 
More about Shuguang 2A3C 6340 
Hum vs voltage 6340 
Meow about the tubes… 6340 
To Be a Content Cat 6340 
Completed! 6337 
Tradition 6337 
Absolutely beautiful! 6337 
The 'film' caps in PS 6336 
Science or religion 6336 
Mass Extinction 6336 
Electrolytics, technology and time 6336 
No more questions about PS capacitors. 6336 
Capacitor choices 6336 
Good time. Welcome back. Thanks God. 6335 
The minor day of Quartets. 6335 
Them's the Breaks 6335 
Eventually! 6334 
So Soon? 6334 
DHT MF channel and 6-ch amp: first conclusions 6334 
All Abuzz about Nothing 6333 
The wire for DC-coupling 6333 
The Dirt on DIY Backlash 6333 
DSET vs. the “better tubes”. 6333 
How to test the DH tubes properly? 6332 
Pairing up tubes for SE use 6331 
The DHT live reserve 6330 
Some interestng models 6330 
Eaten alive. 6330 
The tubey déjà vu? 6329 
The new concept of my output transformer. 6325 
The 4V takes a lead. 6321 
Listening the DH and the striped down version of M... 6318 
I kind of slowly learn what I need. 6318 
More HF from a transformer and DHT? 6316 
Since You Don't Need the Gain 6315 
Exiting the design mode? 6315 
Bye-bye the input divider on MF! 6315 
A few steps back and a gaint leap ahead. 6311 
Single-stage vs. DHT amp. 6310 
Setting up the new Playback 6309 
And the winner is… so far 6306 
If you like type 45... 6306 
Type 45... they're not all the same 6306 
Favorite Flavor? 6306 
The 45 times Meow... 6306 
The problem that I see is… 6306 
Running the 45 6306 
The 10Y...and bye bye Newton 6305 
The commentaries about everything. 6305 
Driver tube and biasing 6305 
DHT drivers 6305 
The ideas are worth trying? 6305 
A question about the polishing the things…. 6301 
The Particular Tube, I'm afraid... 6301 
Driving the 45... cathode first 6300 
ST or Globe; old or new... 6300 
Whatever sticks to the wall as an operation point ... 6300 
The attenuating crap in secondary. 6300 
Operating points and cathode current 6300 
The Burgeoning Opportunities! 6300 
Actually it is not so simple. 6300 
Resistors at the front 6299 
A minor alternation of a position 6299 
The era of enlightenment. 6296 
The devil is in the details.... 6296 
Constructing Sound 6296 
A new view on the DHT evaluation. 6295 
The “strange” YO186 6286 
The dead guy’s lessons. 6241 
2S4S and 2A3 6232 
Ho to use the YO186 6225 
YO 186 fundamental flavor 6225 
The YO-YO tube and "fundamentals" channel 6225 
The live without the YO186, again.... 6223 
Not anymore! 6212 
The very good YoYonisation! 6211 
….above and below two very clean channel. 6210 
The DHT and esoteric imaging deformation. 6197 
DHT, YO186, or??? 6197 
I had no idea how ‘different’ it is. 6144 
The Kazitsky Manufacturing and YO104, some history. 6143 
"Absolution and Eternal Refuge." 6140 
Sofia Electric Type 45 Mesh 6130 
The true association of YO186's Sounds. 5892 
All the Best from Burgundy 5892 
Cheesy tubes 5891 
Me and my DHT references… 5782 
Y0-186 in winter. 5685 
Y0-186 sounds like… 5684 
Rethinking the YO186 tube. 5653 
In My Dreams 5653 
Grunt from type 45? A ridicules comment. 5653 
Blame? 5652 
When good is not good enough. 5652 
45s, Drivers, and 45s 5652 
Hm, that was so simple after all! 5651 
How the YO186 was used. 5235 
What is old is new? 5234 
YO186 vs. type 45. 5233 
The YO186 is gone.... :-( 4782 
That sucks. 4782 
YO186 4780 
Hm, what the hell is going on? 4780 
I do not think that anybody but me would like YO186 4780 
A hallucination? 4777 
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