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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 6510 
One-stage Milq++ and the DHT's alleged tone 6509 
DHT Milq? 6509 
The DHT journey. 6509 
DHT tone 6509 
Well, why not? 6508 
Holding the Fort 6508 
My DHT experiment: Preface 6508 
Input tube and DC heaters 6507 
Reimyo Pat 777 6507 
My DHT experiment: Observations 6503 
DHT or 300B? 6503 
300B 6503 
Talking, perception and the grounds for objectively 6503 
The Wine Via the Wine Glass 6502 
Hence the confusion 6502 
My DHT experiment: some conclusions. 6502 
Reality Reconstruction is not a functionality. 6502 
My experience with DHTs 6502 
Pigmented coloration? 6502 
Dht-dht 6502 
Dynamic viscosity? 6502 
The Pallette preamp... 6502 
If one DHT is good, two must be better? 6502 
"soul" of tubes 6502 
There is a difference... 6502 
Vibration injection? 6502 
Homework # 4334 6502 
The 01A-71A-10Y-45 chain 6502 
Old valves have more soul! 6501 
Was it soul or soil? 6501 
It was just a heading 6501 
Adjustable color: TIMBRE LOCK? 6501 
Neutral or neutral/uncoloured? 6501 
..are lacking in power, dynamics and bandwidth. 6501 
Timbre-Lock. Not quite ready for prime time. 6501 
Injection of analog dither? 6501 
Subliminal signal 6501 
The idea of analog randomanization. 6501 
Okay, what Avicena Power Generator 6501 
I hope you will be hearing about it. 6500 
Avicenna = Arabian 6500 
Persian, not Arab 6500 
The “second solution” - a major disappointment 6500 
More words to describe "sux" please 6500 
Revolution 6500 
The non-melodramatic DHT? 6500 
One-stage DHTs 6499 
One other thing 6499 
One stage 6499 
Brewing, thinking and heating 6499 
Physical characteristics of electronic devices 6499 
I see the things differently. 6499 
Don't waste time being "creative" 6499 
The audiophile attitude 6499 
The where and why of design choices 6499 
Blah blah blah 6499 
Laconic Clarity vs. Comfort vs. Nostalgia 6499 
Do I need to be hissing? 6499 
...associated with lack of neutrality and colorati... 6499 
John Broskie's Partial feedback amplifier 6499 
Randomness vs. freedom and the Homework # 4334 6498 
What is randomness? 6498 
Those least three possibilities… 6498 
Randomness and Music's Prerogative 6498 
It works, … sort of. The revolution is canceled. 6498 
Thorsten Loesch’s article about DHT SETs 6496 
A Beautiful Mind 6495 
Some summary and conclusions from the first phase. 6493 
Second phase: revising requirement for my DHT objectives. 6478 
Tubes for your DHT amp 6478 
Abandoning Milq? 6478 
Will see how it goes.... 6478 
Single-stage Milq vs. Sun Audio VT-2A3 6476 
Topology and 2A3? 6476 
6SN7-2A3 amps? 6476 
Type Casting 6476 
Sun Audio SV-2A3 6476 
6sn7-2a3 6476 
Topology vs parts 6476 
For a DHT amp, you are listening to the power supply 6476 
The vintage tubes syndrome. 6476 
Parts Frenzy 6476 
Too many new sounds 6476 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6475 
New tubes 6474 
Milq bias vs. batery bias 6474 
The batteries are a tricky thing. 6474 
Swimming the ocean at night? 6474 
New 2A3 6474 
To kill of do not kill the capacitor. 6473 
The JJ Electronic amp. 6472 
JJ 2A3 and amp 6472 
Czech tubes 6470 
Single plated vs Double plated? 6470 
Mono plate 2A3 tubes 6470 
I suggested once VT52 tube 6469 
The 800R vs. 1800R vs. 5500R 6469 
YO-186 as the output tube. 6466 
Here she is. 6465 
Some talks about the new production tubes 6461 
New 2A3 tubes 6461 
Some thoughts about one-IHT vs. multiple-DHT 6461 
The Sun Audio with 6E5P 6460 
Multistage DHT circuits 6459 
Wrong tube or wrong topology – here is the question. 6458 
Emission Labs 2A3 6458 
Some comment and questions about then 2A3 talks. 6458 
Which Chinese 2A3? 6458 
OK, for a first time I like the San Audio Kit. 6458 
The YO186 Strip Show 6458 
More on the 2A3 comparisons 6457 
It will be interesting…. 6457 
OPT impedence 6457 
More about the Plate Loading 6457 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6452 
2A3 data 6452 
The New 2A3 tubes 6452 
How many stages I need for 110dB sensitivity, smal... 6452 
How many stages and why... and who makes that 45 o... 6451 
Everything about everything. 6451 
Some very good points... and... possibly more logi... 6451 
Options, options, options.... 6451 
I think we agree overall 6451 
An IDHT with more gain? 6450 
You don't ask for much now, eh? 6450 
2A3 tube impressions 6445 
Interesting analogy 6445 
NOS 2A3 tubes versus new tubes 6445 
Hmmm, let me try this one again... 6445 
Sylvania 2A3 identification 6445 
A picture is worth a thousand micromhos? 6445 
I have more interest in the period tubes 6445 
Why NOS tubes? 6444 
The Holly Ignorance 6444 
Tube tasting 6444 
The cathodes’ flatulence? 6444 
Make mine thoriated please 6444 
Any Germans out there? 6444 
6E5P VS 6E6P 6444 
Vibrations? What do you with them? 6444 
Vibration in tubes and sounds 6444 
UX4 vs UX4ruskie 6443 
Ringing the tubes? I do not know how about that. 6443 
Tube sound and vibration 6443 
The thoughts collection about YO186? 6437 
The lights look green for the YO tube 6436 
"Melquiades" with YO-186. Something like... 6436 
My version of RE-604 and PX4 6435 
The YO186 tube sockets. 6435 
B4/B5 British made 6434 
The YO186’s sockets and prices 6434 
DHT 2A3 amplifier rectification 6433 
My attitude toward tube rectification. 6433 
Tu-be or not Tu-be, seems Tu-be the question. 6432 
It looks like DHT DSET is shaping up. 6431 
The Sylvania 2A3 NOS report 6428 
The Citizen Kane syndrome. 6428 
Sylvania 2A3 in a World without Color 6427 
Are NOS and new manufacture comparing oranges to o... 6427 
That all is incorrect in a way…. 6427 
NOS vs new 2A3 tubes 6427 
The identical operation environment? 6427 
Preferred 2A3 operating point 6427 
The sound of the 2A3 however? 6427 
Circuit modification for 2A3 optimization 6426 
How to get max power from 2A3 6426 
2A3 voltages, loads and realized output power 6426 
Optimal operation of 2A3: an experiment 6426 
Tubes, Whole Circuits, Expectations and Sound 6426 
Gain is not power. 6426 
2A3 amplifier modification & Optimization 6426 
Specialized DSET approach 6426 
6C33/2A3 DSET? 6426 
SET usable power and making the most of it 6426 
The 2A3 loading 6426 
DSET solution for EdgarHorn? 6426 
Optimizing the 2A3 6426 
How much to DSET a DSET 6426 
DSET for Titan 6426 
The Best of All Worlds 6426 
Multiamp setup 6425 
Optimizing the (NOS) 2A3... "KM-style"? 6425 
There are many opportunities, it all depends what ... 6425 
Modifying amplifer to optimize NOS 2A3 performance 6425 
Conceptualizing Melquiades DSET is done 6419 
2A3 and 400V supply 6419 
Pudding and the chicken wires 6418 
Another shot at numbers 6418 
How to cook the "uninformed" anode. 6418 
Okay, so this might work.... 6418 
The DHT Milq DSET, the prebuilt draft. 6418 
Looks good, but.... 6417 
2A3 with slightly lover filament voltage? 6417 
Less is more... usually. 6417 
Where to burn gain? how? and where to get beter st... 6416 
Stepping Out 6416 
Said to be good, but 6416 
Gain to lose 6416 
Why nothing is simple with this damn amp! 6416 
Another idea for losing gain 6416 
What's best 6416 
Options, options... 6416 
Actually, it is not so bad. 6416 
Other compromises... 6415 
Cathode vs. fixed with DHT 6414 
Is it glowing yet? 6394 
It is comming.... 6394 
The new MF channel. 6388 
I started to work on the Milq’s DHT Island. 6387 
Innerstage loading vs. OPT loading. 6379 
The intestage loading talk. 6376 
My playback feels like it is broken. 6371 
1 in 50? 6371 
Yes, it was after PP2000 6371 
Die Walküre soldering. 6370 
The post Die Walküre soldering 6369 
Another amp arond YO186 6368 
Gain? 6368 
The Unexpected problem with DHT Milq. 6368 
Simple is good 6367 
Ok, I am moving forward. 6367 
The Milq DSET is up. 6366 
My DH DSET – 2 days later. 6364 
Here is more data to reconcile. 6364 
Hm, that is interesting and unpleasant so far. 6363 
Ok, what do I want? 6363 
Let Go of Some Conceptual "Restrictions"? 6363 
The Milq DH DSET, the further thoughts in progress. 6363 
Crunching Numbers; Shaping Sound 6363 
How about the tweeter? 6362 
Tweeter Efficiency? 6362 
Safe and Sound 6362 
More mystery with tweeter but still on the subject. 6362 
Some clarifications. 6362 
How about that?!!! 6362 
Further considerations: DC-coupling. 6360 
Head Room 6360 
To kill the mandatory 13dB 6359 
DC coupling and killing 13db and driving 6e5p miller and.... 6359 
I do not think that it might be damaging… 6359 
Again with the PS 6359 
AKA J.C. Morrison’s amp but… 6357 
Parallel Universe 6357 
Melquiades HD MF DSET, Draft13. 6355 
Why I let other people build them... 6355 
Ok, it's going to right direction. 6355 
Ok, it looks already very close…. 6354 
The Loftinish-Whitish, well sort of…. 6351 
MF: the pre-final version. 6351 
Loftin-White? 6351 
Did anyone hear the PX4 amplifiers? 6351 
What Could use Improving at This Point? 6351 
The Milq’s MF front-end is done 6347 
Why I Let Other People Build Them, II 6347 
Define really quiet 6346 
Another variable of sound 6346 
Backlash? 6346 
Alternative filament supplies 6346 
I kind of faced a problem with AC 6346 
Going down the DC path 6345 
It is not about the “whole sound” but about “molec... 6345 
Molecular sound 6345 
AC-DC heater supply 6345 
The Tentlabs are $10 worth PS. 6345 
The unexpected resolution of AC vs. DC quandary. 6345 
The devil is less scared than it depicted. 6345 
Hiss or Hum 6345 
AC transformers 6345 
I have seen the Promised Land 6344 
OK, the choke noise is not a problem anymore 6344 
Ok, it is working fine but… 6343 
Divide and Conquer 6343 
The design phase is over. 6342 
The unexpected insanity! 6341 
Loading 6341 
Looking for inspiring ideas for 'universal' loadin... 6341 
A filaments Sherlock Holmes wanted. 6341 
Going the Distance 6341 
Read the f*** manual! 6341 
Agreed. 6341 
I agree 6341 
The filament transformer 6341 
Center-tap and options 6341 
Something like this…. 6341 
Avoiding "Dial-an-Amp" 6341 
The foreplay is going on. 6341 
Split balance 6340 
Further thoughts about my DH filaments 6340 
The Shuguang 2A3 tubes. 6340 
SHuguang 6340 
Going through…. 6339 
The 2.5V noise vs. 4V noise. 6338 
More about Shuguang 2A3C 6338 
Hum vs voltage 6338 
Meow about the tubes… 6338 
To Be a Content Cat 6338 
Completed! 6335 
Tradition 6335 
Absolutely beautiful! 6335 
The 'film' caps in PS 6334 
Science or religion 6334 
Mass Extinction 6334 
Electrolytics, technology and time 6334 
No more questions about PS capacitors. 6334 
Capacitor choices 6334 
Good time. Welcome back. Thanks God. 6333 
The minor day of Quartets. 6333 
Them's the Breaks 6333 
Eventually! 6332 
So Soon? 6332 
DHT MF channel and 6-ch amp: first conclusions 6332 
All Abuzz about Nothing 6331 
The wire for DC-coupling 6331 
The Dirt on DIY Backlash 6331 
DSET vs. the “better tubes”. 6331 
How to test the DH tubes properly? 6330 
Pairing up tubes for SE use 6329 
The DHT live reserve 6328 
Some interestng models 6328 
Eaten alive. 6328 
The tubey déjà vu? 6327 
The new concept of my output transformer. 6323 
The 4V takes a lead. 6319 
Listening the DH and the striped down version of M... 6316 
I kind of slowly learn what I need. 6316 
More HF from a transformer and DHT? 6314 
Since You Don't Need the Gain 6313 
Exiting the design mode? 6313 
Bye-bye the input divider on MF! 6313 
A few steps back and a gaint leap ahead. 6309 
Single-stage vs. DHT amp. 6308 
Setting up the new Playback 6307 
And the winner is… so far 6304 
If you like type 45... 6304 
Type 45... they're not all the same 6304 
Favorite Flavor? 6304 
The 45 times Meow... 6304 
The problem that I see is… 6304 
Running the 45 6304 
The 10Y...and bye bye Newton 6303 
The commentaries about everything. 6303 
Driver tube and biasing 6303 
DHT drivers 6303 
The ideas are worth trying? 6303 
A question about the polishing the things…. 6299 
The Particular Tube, I'm afraid... 6299 
Driving the 45... cathode first 6298 
ST or Globe; old or new... 6298 
Whatever sticks to the wall as an operation point ... 6298 
The attenuating crap in secondary. 6298 
Operating points and cathode current 6298 
The Burgeoning Opportunities! 6298 
Actually it is not so simple. 6298 
Resistors at the front 6297 
A minor alternation of a position 6297 
The era of enlightenment. 6294 
The devil is in the details.... 6294 
Constructing Sound 6294 
A new view on the DHT evaluation. 6293 
The “strange” YO186 6284 
The dead guy’s lessons. 6239 
2S4S and 2A3 6230 
Ho to use the YO186 6223 
YO 186 fundamental flavor 6223 
The YO-YO tube and "fundamentals" channel 6223 
The live without the YO186, again.... 6221 
Not anymore! 6210 
The very good YoYonisation! 6209 
….above and below two very clean channel. 6208 
The DHT and esoteric imaging deformation. 6195 
DHT, YO186, or??? 6195 
I had no idea how ‘different’ it is. 6142 
The Kazitsky Manufacturing and YO104, some history. 6141 
"Absolution and Eternal Refuge." 6138 
Sofia Electric Type 45 Mesh 6128 
The true association of YO186's Sounds. 5890 
All the Best from Burgundy 5890 
Cheesy tubes 5889 
Me and my DHT references… 5780 
Y0-186 in winter. 5683 
Y0-186 sounds like… 5682 
Rethinking the YO186 tube. 5651 
In My Dreams 5651 
Grunt from type 45? A ridicules comment. 5651 
Blame? 5650 
When good is not good enough. 5650 
45s, Drivers, and 45s 5650 
Hm, that was so simple after all! 5649 
How the YO186 was used. 5233 
What is old is new? 5232 
YO186 vs. type 45. 5231 
The YO186 is gone.... :-( 4780 
That sucks. 4780 
YO186 4778 
Hm, what the hell is going on? 4778 
I do not think that anybody but me would like YO186 4778 
A hallucination? 4775 
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