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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 6521 
One-stage Milq++ and the DHT's alleged tone 6520 
DHT Milq? 6520 
The DHT journey. 6520 
DHT tone 6520 
Well, why not? 6519 
Holding the Fort 6519 
My DHT experiment: Preface 6519 
Input tube and DC heaters 6518 
Reimyo Pat 777 6518 
My DHT experiment: Observations 6514 
DHT or 300B? 6514 
300B 6514 
Talking, perception and the grounds for objectively 6514 
The Wine Via the Wine Glass 6513 
Hence the confusion 6513 
My DHT experiment: some conclusions. 6513 
Reality Reconstruction is not a functionality. 6513 
My experience with DHTs 6513 
Pigmented coloration? 6513 
Dht-dht 6513 
Dynamic viscosity? 6513 
The Pallette preamp... 6513 
If one DHT is good, two must be better? 6513 
"soul" of tubes 6513 
There is a difference... 6513 
Vibration injection? 6513 
Homework # 4334 6513 
The 01A-71A-10Y-45 chain 6513 
Old valves have more soul! 6512 
Was it soul or soil? 6512 
It was just a heading 6512 
Adjustable color: TIMBRE LOCK? 6512 
Neutral or neutral/uncoloured? 6512 
..are lacking in power, dynamics and bandwidth. 6512 
Timbre-Lock. Not quite ready for prime time. 6512 
Injection of analog dither? 6512 
Subliminal signal 6512 
The idea of analog randomanization. 6512 
Okay, what Avicena Power Generator 6512 
I hope you will be hearing about it. 6511 
Avicenna = Arabian 6511 
Persian, not Arab 6511 
The “second solution” - a major disappointment 6511 
More words to describe "sux" please 6511 
Revolution 6511 
The non-melodramatic DHT? 6511 
One-stage DHTs 6510 
One other thing 6510 
One stage 6510 
Brewing, thinking and heating 6510 
Physical characteristics of electronic devices 6510 
I see the things differently. 6510 
Don't waste time being "creative" 6510 
The audiophile attitude 6510 
The where and why of design choices 6510 
Blah blah blah 6510 
Laconic Clarity vs. Comfort vs. Nostalgia 6510 
Do I need to be hissing? 6510 
...associated with lack of neutrality and colorati... 6510 
John Broskie's Partial feedback amplifier 6510 
Randomness vs. freedom and the Homework # 4334 6509 
What is randomness? 6509 
Those least three possibilities… 6509 
Randomness and Music's Prerogative 6509 
It works, … sort of. The revolution is canceled. 6509 
Thorsten Loesch’s article about DHT SETs 6507 
A Beautiful Mind 6506 
Some summary and conclusions from the first phase. 6504 
Second phase: revising requirement for my DHT objectives. 6489 
Tubes for your DHT amp 6489 
Abandoning Milq? 6489 
Will see how it goes.... 6489 
Single-stage Milq vs. Sun Audio VT-2A3 6487 
Topology and 2A3? 6487 
6SN7-2A3 amps? 6487 
Type Casting 6487 
Sun Audio SV-2A3 6487 
6sn7-2a3 6487 
Topology vs parts 6487 
For a DHT amp, you are listening to the power supply 6487 
The vintage tubes syndrome. 6487 
Parts Frenzy 6487 
Too many new sounds 6487 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6486 
New tubes 6485 
Milq bias vs. batery bias 6485 
The batteries are a tricky thing. 6485 
Swimming the ocean at night? 6485 
New 2A3 6485 
To kill of do not kill the capacitor. 6484 
The JJ Electronic amp. 6483 
JJ 2A3 and amp 6483 
Czech tubes 6481 
Single plated vs Double plated? 6481 
Mono plate 2A3 tubes 6481 
I suggested once VT52 tube 6480 
The 800R vs. 1800R vs. 5500R 6480 
YO-186 as the output tube. 6477 
Here she is. 6476 
Some talks about the new production tubes 6472 
New 2A3 tubes 6472 
Some thoughts about one-IHT vs. multiple-DHT 6472 
The Sun Audio with 6E5P 6471 
Multistage DHT circuits 6470 
Wrong tube or wrong topology – here is the question. 6469 
Emission Labs 2A3 6469 
Some comment and questions about then 2A3 talks. 6469 
Which Chinese 2A3? 6469 
OK, for a first time I like the San Audio Kit. 6469 
The YO186 Strip Show 6469 
More on the 2A3 comparisons 6468 
It will be interesting…. 6468 
OPT impedence 6468 
More about the Plate Loading 6468 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6463 
2A3 data 6463 
The New 2A3 tubes 6463 
How many stages I need for 110dB sensitivity, smal... 6463 
How many stages and why... and who makes that 45 o... 6462 
Everything about everything. 6462 
Some very good points... and... possibly more logi... 6462 
Options, options, options.... 6462 
I think we agree overall 6462 
An IDHT with more gain? 6461 
You don't ask for much now, eh? 6461 
2A3 tube impressions 6456 
Interesting analogy 6456 
NOS 2A3 tubes versus new tubes 6456 
Hmmm, let me try this one again... 6456 
Sylvania 2A3 identification 6456 
A picture is worth a thousand micromhos? 6456 
I have more interest in the period tubes 6456 
Why NOS tubes? 6455 
The Holly Ignorance 6455 
Tube tasting 6455 
The cathodes’ flatulence? 6455 
Make mine thoriated please 6455 
Any Germans out there? 6455 
6E5P VS 6E6P 6455 
Vibrations? What do you with them? 6455 
Vibration in tubes and sounds 6455 
UX4 vs UX4ruskie 6454 
Ringing the tubes? I do not know how about that. 6454 
Tube sound and vibration 6454 
The thoughts collection about YO186? 6448 
The lights look green for the YO tube 6447 
"Melquiades" with YO-186. Something like... 6447 
My version of RE-604 and PX4 6446 
The YO186 tube sockets. 6446 
B4/B5 British made 6445 
The YO186’s sockets and prices 6445 
DHT 2A3 amplifier rectification 6444 
My attitude toward tube rectification. 6444 
Tu-be or not Tu-be, seems Tu-be the question. 6443 
It looks like DHT DSET is shaping up. 6442 
The Sylvania 2A3 NOS report 6439 
The Citizen Kane syndrome. 6439 
Sylvania 2A3 in a World without Color 6438 
Are NOS and new manufacture comparing oranges to o... 6438 
That all is incorrect in a way…. 6438 
NOS vs new 2A3 tubes 6438 
The identical operation environment? 6438 
Preferred 2A3 operating point 6438 
The sound of the 2A3 however? 6438 
Circuit modification for 2A3 optimization 6437 
How to get max power from 2A3 6437 
2A3 voltages, loads and realized output power 6437 
Optimal operation of 2A3: an experiment 6437 
Tubes, Whole Circuits, Expectations and Sound 6437 
Gain is not power. 6437 
2A3 amplifier modification & Optimization 6437 
Specialized DSET approach 6437 
6C33/2A3 DSET? 6437 
SET usable power and making the most of it 6437 
The 2A3 loading 6437 
DSET solution for EdgarHorn? 6437 
Optimizing the 2A3 6437 
How much to DSET a DSET 6437 
DSET for Titan 6437 
The Best of All Worlds 6437 
Multiamp setup 6436 
Optimizing the (NOS) 2A3... "KM-style"? 6436 
There are many opportunities, it all depends what ... 6436 
Modifying amplifer to optimize NOS 2A3 performance 6436 
Conceptualizing Melquiades DSET is done 6430 
2A3 and 400V supply 6430 
Pudding and the chicken wires 6429 
Another shot at numbers 6429 
How to cook the "uninformed" anode. 6429 
Okay, so this might work.... 6429 
The DHT Milq DSET, the prebuilt draft. 6429 
Looks good, but.... 6428 
2A3 with slightly lover filament voltage? 6428 
Less is more... usually. 6428 
Where to burn gain? how? and where to get beter st... 6427 
Stepping Out 6427 
Said to be good, but 6427 
Gain to lose 6427 
Why nothing is simple with this damn amp! 6427 
Another idea for losing gain 6427 
What's best 6427 
Options, options... 6427 
Actually, it is not so bad. 6427 
Other compromises... 6426 
Cathode vs. fixed with DHT 6425 
Is it glowing yet? 6405 
It is comming.... 6405 
The new MF channel. 6399 
I started to work on the Milq’s DHT Island. 6398 
Innerstage loading vs. OPT loading. 6390 
The intestage loading talk. 6387 
My playback feels like it is broken. 6382 
1 in 50? 6382 
Yes, it was after PP2000 6382 
Die Walküre soldering. 6381 
The post Die Walküre soldering 6380 
Another amp arond YO186 6379 
Gain? 6379 
The Unexpected problem with DHT Milq. 6379 
Simple is good 6378 
Ok, I am moving forward. 6378 
The Milq DSET is up. 6377 
My DH DSET – 2 days later. 6375 
Here is more data to reconcile. 6375 
Hm, that is interesting and unpleasant so far. 6374 
Ok, what do I want? 6374 
Let Go of Some Conceptual "Restrictions"? 6374 
The Milq DH DSET, the further thoughts in progress. 6374 
Crunching Numbers; Shaping Sound 6374 
How about the tweeter? 6373 
Tweeter Efficiency? 6373 
Safe and Sound 6373 
More mystery with tweeter but still on the subject. 6373 
Some clarifications. 6373 
How about that?!!! 6373 
Further considerations: DC-coupling. 6371 
Head Room 6371 
To kill the mandatory 13dB 6370 
DC coupling and killing 13db and driving 6e5p miller and.... 6370 
I do not think that it might be damaging… 6370 
Again with the PS 6370 
AKA J.C. Morrison’s amp but… 6368 
Parallel Universe 6368 
Melquiades HD MF DSET, Draft13. 6366 
Why I let other people build them... 6366 
Ok, it's going to right direction. 6366 
Ok, it looks already very close…. 6365 
The Loftinish-Whitish, well sort of…. 6362 
MF: the pre-final version. 6362 
Loftin-White? 6362 
Did anyone hear the PX4 amplifiers? 6362 
What Could use Improving at This Point? 6362 
The Milq’s MF front-end is done 6358 
Why I Let Other People Build Them, II 6358 
Define really quiet 6357 
Another variable of sound 6357 
Backlash? 6357 
Alternative filament supplies 6357 
I kind of faced a problem with AC 6357 
Going down the DC path 6356 
It is not about the “whole sound” but about “molec... 6356 
Molecular sound 6356 
AC-DC heater supply 6356 
The Tentlabs are $10 worth PS. 6356 
The unexpected resolution of AC vs. DC quandary. 6356 
The devil is less scared than it depicted. 6356 
Hiss or Hum 6356 
AC transformers 6356 
I have seen the Promised Land 6355 
OK, the choke noise is not a problem anymore 6355 
Ok, it is working fine but… 6354 
Divide and Conquer 6354 
The design phase is over. 6353 
The unexpected insanity! 6352 
Loading 6352 
Looking for inspiring ideas for 'universal' loadin... 6352 
A filaments Sherlock Holmes wanted. 6352 
Going the Distance 6352 
Read the f*** manual! 6352 
Agreed. 6352 
I agree 6352 
The filament transformer 6352 
Center-tap and options 6352 
Something like this…. 6352 
Avoiding "Dial-an-Amp" 6352 
The foreplay is going on. 6352 
Split balance 6351 
Further thoughts about my DH filaments 6351 
The Shuguang 2A3 tubes. 6351 
SHuguang 6351 
Going through…. 6350 
The 2.5V noise vs. 4V noise. 6349 
More about Shuguang 2A3C 6349 
Hum vs voltage 6349 
Meow about the tubes… 6349 
To Be a Content Cat 6349 
Completed! 6346 
Tradition 6346 
Absolutely beautiful! 6346 
The 'film' caps in PS 6345 
Science or religion 6345 
Mass Extinction 6345 
Electrolytics, technology and time 6345 
No more questions about PS capacitors. 6345 
Capacitor choices 6345 
Good time. Welcome back. Thanks God. 6344 
The minor day of Quartets. 6344 
Them's the Breaks 6344 
Eventually! 6343 
So Soon? 6343 
DHT MF channel and 6-ch amp: first conclusions 6343 
All Abuzz about Nothing 6342 
The wire for DC-coupling 6342 
The Dirt on DIY Backlash 6342 
DSET vs. the “better tubes”. 6342 
How to test the DH tubes properly? 6341 
Pairing up tubes for SE use 6340 
The DHT live reserve 6339 
Some interestng models 6339 
Eaten alive. 6339 
The tubey déjà vu? 6338 
The new concept of my output transformer. 6334 
The 4V takes a lead. 6330 
Listening the DH and the striped down version of M... 6327 
I kind of slowly learn what I need. 6327 
More HF from a transformer and DHT? 6325 
Since You Don't Need the Gain 6324 
Exiting the design mode? 6324 
Bye-bye the input divider on MF! 6324 
A few steps back and a gaint leap ahead. 6320 
Single-stage vs. DHT amp. 6319 
Setting up the new Playback 6318 
And the winner is… so far 6315 
If you like type 45... 6315 
Type 45... they're not all the same 6315 
Favorite Flavor? 6315 
The 45 times Meow... 6315 
The problem that I see is… 6315 
Running the 45 6315 
The 10Y...and bye bye Newton 6314 
The commentaries about everything. 6314 
Driver tube and biasing 6314 
DHT drivers 6314 
The ideas are worth trying? 6314 
A question about the polishing the things…. 6310 
The Particular Tube, I'm afraid... 6310 
Driving the 45... cathode first 6309 
ST or Globe; old or new... 6309 
Whatever sticks to the wall as an operation point ... 6309 
The attenuating crap in secondary. 6309 
Operating points and cathode current 6309 
The Burgeoning Opportunities! 6309 
Actually it is not so simple. 6309 
Resistors at the front 6308 
A minor alternation of a position 6308 
The era of enlightenment. 6305 
The devil is in the details.... 6305 
Constructing Sound 6305 
A new view on the DHT evaluation. 6304 
The “strange” YO186 6295 
The dead guy’s lessons. 6250 
2S4S and 2A3 6241 
Ho to use the YO186 6234 
YO 186 fundamental flavor 6234 
The YO-YO tube and "fundamentals" channel 6234 
The live without the YO186, again.... 6232 
Not anymore! 6221 
The very good YoYonisation! 6220 
….above and below two very clean channel. 6219 
The DHT and esoteric imaging deformation. 6206 
DHT, YO186, or??? 6206 
I had no idea how ‘different’ it is. 6153 
The Kazitsky Manufacturing and YO104, some history. 6152 
"Absolution and Eternal Refuge." 6149 
Sofia Electric Type 45 Mesh 6139 
The true association of YO186's Sounds. 5901 
All the Best from Burgundy 5901 
Cheesy tubes 5900 
Me and my DHT references… 5791 
Y0-186 in winter. 5694 
Y0-186 sounds like… 5693 
Rethinking the YO186 tube. 5662 
In My Dreams 5662 
Grunt from type 45? A ridicules comment. 5662 
Blame? 5661 
When good is not good enough. 5661 
45s, Drivers, and 45s 5661 
Hm, that was so simple after all! 5660 
How the YO186 was used. 5244 
What is old is new? 5243 
YO186 vs. type 45. 5242 
The YO186 is gone.... :-( 4791 
That sucks. 4791 
YO186 4789 
Hm, what the hell is going on? 4789 
I do not think that anybody but me would like YO186 4789 
A hallucination? 4786 
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