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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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Romy the Cat's personal site dedicated to advanced audio and evolved music reproduction techniques
Thread WITH the new posts.

Legends: "Week" - last week posts, "Bold" - entered last 48 hours.
Single-stage Melquiades vs. DHT amps 6524 
One-stage Milq++ and the DHT's alleged tone 6523 
DHT Milq? 6523 
The DHT journey. 6523 
DHT tone 6523 
Well, why not? 6522 
Holding the Fort 6522 
My DHT experiment: Preface 6522 
Input tube and DC heaters 6521 
Reimyo Pat 777 6521 
My DHT experiment: Observations 6517 
DHT or 300B? 6517 
300B 6517 
Talking, perception and the grounds for objectively 6517 
The Wine Via the Wine Glass 6516 
Hence the confusion 6516 
My DHT experiment: some conclusions. 6516 
Reality Reconstruction is not a functionality. 6516 
My experience with DHTs 6516 
Pigmented coloration? 6516 
Dht-dht 6516 
Dynamic viscosity? 6516 
The Pallette preamp... 6516 
If one DHT is good, two must be better? 6516 
"soul" of tubes 6516 
There is a difference... 6516 
Vibration injection? 6516 
Homework # 4334 6516 
The 01A-71A-10Y-45 chain 6516 
Old valves have more soul! 6515 
Was it soul or soil? 6515 
It was just a heading 6515 
Adjustable color: TIMBRE LOCK? 6515 
Neutral or neutral/uncoloured? 6515 
..are lacking in power, dynamics and bandwidth. 6515 
Timbre-Lock. Not quite ready for prime time. 6515 
Injection of analog dither? 6515 
Subliminal signal 6515 
The idea of analog randomanization. 6515 
Okay, what Avicena Power Generator 6515 
I hope you will be hearing about it. 6514 
Avicenna = Arabian 6514 
Persian, not Arab 6514 
The “second solution” - a major disappointment 6514 
More words to describe "sux" please 6514 
Revolution 6514 
The non-melodramatic DHT? 6514 
One-stage DHTs 6513 
One other thing 6513 
One stage 6513 
Brewing, thinking and heating 6513 
Physical characteristics of electronic devices 6513 
I see the things differently. 6513 
Don't waste time being "creative" 6513 
The audiophile attitude 6513 
The where and why of design choices 6513 
Blah blah blah 6513 
Laconic Clarity vs. Comfort vs. Nostalgia 6513 
Do I need to be hissing? 6513 
...associated with lack of neutrality and colorati... 6513 
John Broskie's Partial feedback amplifier 6513 
Randomness vs. freedom and the Homework # 4334 6512 
What is randomness? 6512 
Those least three possibilities… 6512 
Randomness and Music's Prerogative 6512 
It works, … sort of. The revolution is canceled. 6512 
Thorsten Loesch’s article about DHT SETs 6510 
A Beautiful Mind 6509 
Some summary and conclusions from the first phase. 6507 
Second phase: revising requirement for my DHT objectives. 6492 
Tubes for your DHT amp 6492 
Abandoning Milq? 6492 
Will see how it goes.... 6492 
Single-stage Milq vs. Sun Audio VT-2A3 6490 
Topology and 2A3? 6490 
6SN7-2A3 amps? 6490 
Type Casting 6490 
Sun Audio SV-2A3 6490 
6sn7-2a3 6490 
Topology vs parts 6490 
For a DHT amp, you are listening to the power supply 6490 
The vintage tubes syndrome. 6490 
Parts Frenzy 6490 
Too many new sounds 6490 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6489 
New tubes 6488 
Milq bias vs. batery bias 6488 
The batteries are a tricky thing. 6488 
Swimming the ocean at night? 6488 
New 2A3 6488 
To kill of do not kill the capacitor. 6487 
The JJ Electronic amp. 6486 
JJ 2A3 and amp 6486 
Czech tubes 6484 
Single plated vs Double plated? 6484 
Mono plate 2A3 tubes 6484 
I suggested once VT52 tube 6483 
The 800R vs. 1800R vs. 5500R 6483 
YO-186 as the output tube. 6480 
Here she is. 6479 
Some talks about the new production tubes 6475 
New 2A3 tubes 6475 
Some thoughts about one-IHT vs. multiple-DHT 6475 
The Sun Audio with 6E5P 6474 
Multistage DHT circuits 6473 
Wrong tube or wrong topology – here is the question. 6472 
Emission Labs 2A3 6472 
Some comment and questions about then 2A3 talks. 6472 
Which Chinese 2A3? 6472 
OK, for a first time I like the San Audio Kit. 6472 
The YO186 Strip Show 6472 
More on the 2A3 comparisons 6471 
It will be interesting…. 6471 
OPT impedence 6471 
More about the Plate Loading 6471 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6466 
2A3 data 6466 
The New 2A3 tubes 6466 
How many stages I need for 110dB sensitivity, smal... 6466 
How many stages and why... and who makes that 45 o... 6465 
Everything about everything. 6465 
Some very good points... and... possibly more logi... 6465 
Options, options, options.... 6465 
I think we agree overall 6465 
An IDHT with more gain? 6464 
You don't ask for much now, eh? 6464 
2A3 tube impressions 6459 
Interesting analogy 6459 
NOS 2A3 tubes versus new tubes 6459 
Hmmm, let me try this one again... 6459 
Sylvania 2A3 identification 6459 
A picture is worth a thousand micromhos? 6459 
I have more interest in the period tubes 6459 
Why NOS tubes? 6458 
The Holly Ignorance 6458 
Tube tasting 6458 
The cathodes’ flatulence? 6458 
Make mine thoriated please 6458 
Any Germans out there? 6458 
6E5P VS 6E6P 6458 
Vibrations? What do you with them? 6458 
Vibration in tubes and sounds 6458 
UX4 vs UX4ruskie 6457 
Ringing the tubes? I do not know how about that. 6457 
Tube sound and vibration 6457 
The thoughts collection about YO186? 6451 
The lights look green for the YO tube 6450 
"Melquiades" with YO-186. Something like... 6450 
My version of RE-604 and PX4 6449 
The YO186 tube sockets. 6449 
B4/B5 British made 6448 
The YO186’s sockets and prices 6448 
DHT 2A3 amplifier rectification 6447 
My attitude toward tube rectification. 6447 
Tu-be or not Tu-be, seems Tu-be the question. 6446 
It looks like DHT DSET is shaping up. 6445 
The Sylvania 2A3 NOS report 6442 
The Citizen Kane syndrome. 6442 
Sylvania 2A3 in a World without Color 6441 
Are NOS and new manufacture comparing oranges to o... 6441 
That all is incorrect in a way…. 6441 
NOS vs new 2A3 tubes 6441 
The identical operation environment? 6441 
Preferred 2A3 operating point 6441 
The sound of the 2A3 however? 6441 
Circuit modification for 2A3 optimization 6440 
How to get max power from 2A3 6440 
2A3 voltages, loads and realized output power 6440 
Optimal operation of 2A3: an experiment 6440 
Tubes, Whole Circuits, Expectations and Sound 6440 
Gain is not power. 6440 
2A3 amplifier modification & Optimization 6440 
Specialized DSET approach 6440 
6C33/2A3 DSET? 6440 
SET usable power and making the most of it 6440 
The 2A3 loading 6440 
DSET solution for EdgarHorn? 6440 
Optimizing the 2A3 6440 
How much to DSET a DSET 6440 
DSET for Titan 6440 
The Best of All Worlds 6440 
Multiamp setup 6439 
Optimizing the (NOS) 2A3... "KM-style"? 6439 
There are many opportunities, it all depends what ... 6439 
Modifying amplifer to optimize NOS 2A3 performance 6439 
Conceptualizing Melquiades DSET is done 6433 
2A3 and 400V supply 6433 
Pudding and the chicken wires 6432 
Another shot at numbers 6432 
How to cook the "uninformed" anode. 6432 
Okay, so this might work.... 6432 
The DHT Milq DSET, the prebuilt draft. 6432 
Looks good, but.... 6431 
2A3 with slightly lover filament voltage? 6431 
Less is more... usually. 6431 
Where to burn gain? how? and where to get beter st... 6430 
Stepping Out 6430 
Said to be good, but 6430 
Gain to lose 6430 
Why nothing is simple with this damn amp! 6430 
Another idea for losing gain 6430 
What's best 6430 
Options, options... 6430 
Actually, it is not so bad. 6430 
Other compromises... 6429 
Cathode vs. fixed with DHT 6428 
Is it glowing yet? 6408 
It is comming.... 6408 
The new MF channel. 6402 
I started to work on the Milq’s DHT Island. 6401 
Innerstage loading vs. OPT loading. 6393 
The intestage loading talk. 6390 
My playback feels like it is broken. 6385 
1 in 50? 6385 
Yes, it was after PP2000 6385 
Die Walküre soldering. 6384 
The post Die Walküre soldering 6383 
Another amp arond YO186 6382 
Gain? 6382 
The Unexpected problem with DHT Milq. 6382 
Simple is good 6381 
Ok, I am moving forward. 6381 
The Milq DSET is up. 6380 
My DH DSET – 2 days later. 6378 
Here is more data to reconcile. 6378 
Hm, that is interesting and unpleasant so far. 6377 
Ok, what do I want? 6377 
Let Go of Some Conceptual "Restrictions"? 6377 
The Milq DH DSET, the further thoughts in progress. 6377 
Crunching Numbers; Shaping Sound 6377 
How about the tweeter? 6376 
Tweeter Efficiency? 6376 
Safe and Sound 6376 
More mystery with tweeter but still on the subject. 6376 
Some clarifications. 6376 
How about that?!!! 6376 
Further considerations: DC-coupling. 6374 
Head Room 6374 
To kill the mandatory 13dB 6373 
DC coupling and killing 13db and driving 6e5p miller and.... 6373 
I do not think that it might be damaging… 6373 
Again with the PS 6373 
AKA J.C. Morrison’s amp but… 6371 
Parallel Universe 6371 
Melquiades HD MF DSET, Draft13. 6369 
Why I let other people build them... 6369 
Ok, it's going to right direction. 6369 
Ok, it looks already very close…. 6368 
The Loftinish-Whitish, well sort of…. 6365 
MF: the pre-final version. 6365 
Loftin-White? 6365 
Did anyone hear the PX4 amplifiers? 6365 
What Could use Improving at This Point? 6365 
The Milq’s MF front-end is done 6361 
Why I Let Other People Build Them, II 6361 
Define really quiet 6360 
Another variable of sound 6360 
Backlash? 6360 
Alternative filament supplies 6360 
I kind of faced a problem with AC 6360 
Going down the DC path 6359 
It is not about the “whole sound” but about “molec... 6359 
Molecular sound 6359 
AC-DC heater supply 6359 
The Tentlabs are $10 worth PS. 6359 
The unexpected resolution of AC vs. DC quandary. 6359 
The devil is less scared than it depicted. 6359 
Hiss or Hum 6359 
AC transformers 6359 
I have seen the Promised Land 6358 
OK, the choke noise is not a problem anymore 6358 
Ok, it is working fine but… 6357 
Divide and Conquer 6357 
The design phase is over. 6356 
The unexpected insanity! 6355 
Loading 6355 
Looking for inspiring ideas for 'universal' loadin... 6355 
A filaments Sherlock Holmes wanted. 6355 
Going the Distance 6355 
Read the f*** manual! 6355 
Agreed. 6355 
I agree 6355 
The filament transformer 6355 
Center-tap and options 6355 
Something like this…. 6355 
Avoiding "Dial-an-Amp" 6355 
The foreplay is going on. 6355 
Split balance 6354 
Further thoughts about my DH filaments 6354 
The Shuguang 2A3 tubes. 6354 
SHuguang 6354 
Going through…. 6353 
The 2.5V noise vs. 4V noise. 6352 
More about Shuguang 2A3C 6352 
Hum vs voltage 6352 
Meow about the tubes… 6352 
To Be a Content Cat 6352 
Completed! 6349 
Tradition 6349 
Absolutely beautiful! 6349 
The 'film' caps in PS 6348 
Science or religion 6348 
Mass Extinction 6348 
Electrolytics, technology and time 6348 
No more questions about PS capacitors. 6348 
Capacitor choices 6348 
Good time. Welcome back. Thanks God. 6347 
The minor day of Quartets. 6347 
Them's the Breaks 6347 
Eventually! 6346 
So Soon? 6346 
DHT MF channel and 6-ch amp: first conclusions 6346 
All Abuzz about Nothing 6345 
The wire for DC-coupling 6345 
The Dirt on DIY Backlash 6345 
DSET vs. the “better tubes”. 6345 
How to test the DH tubes properly? 6344 
Pairing up tubes for SE use 6343 
The DHT live reserve 6342 
Some interestng models 6342 
Eaten alive. 6342 
The tubey déjà vu? 6341 
The new concept of my output transformer. 6337 
The 4V takes a lead. 6333 
Listening the DH and the striped down version of M... 6330 
I kind of slowly learn what I need. 6330 
More HF from a transformer and DHT? 6328 
Since You Don't Need the Gain 6327 
Exiting the design mode? 6327 
Bye-bye the input divider on MF! 6327 
A few steps back and a gaint leap ahead. 6323 
Single-stage vs. DHT amp. 6322 
Setting up the new Playback 6321 
And the winner is… so far 6318 
If you like type 45... 6318 
Type 45... they're not all the same 6318 
Favorite Flavor? 6318 
The 45 times Meow... 6318 
The problem that I see is… 6318 
Running the 45 6318 
The 10Y...and bye bye Newton 6317 
The commentaries about everything. 6317 
Driver tube and biasing 6317 
DHT drivers 6317 
The ideas are worth trying? 6317 
A question about the polishing the things…. 6313 
The Particular Tube, I'm afraid... 6313 
Driving the 45... cathode first 6312 
ST or Globe; old or new... 6312 
Whatever sticks to the wall as an operation point ... 6312 
The attenuating crap in secondary. 6312 
Operating points and cathode current 6312 
The Burgeoning Opportunities! 6312 
Actually it is not so simple. 6312 
Resistors at the front 6311 
A minor alternation of a position 6311 
The era of enlightenment. 6308 
The devil is in the details.... 6308 
Constructing Sound 6308 
A new view on the DHT evaluation. 6307 
The “strange” YO186 6298 
The dead guy’s lessons. 6253 
2S4S and 2A3 6244 
Ho to use the YO186 6237 
YO 186 fundamental flavor 6237 
The YO-YO tube and "fundamentals" channel 6237 
The live without the YO186, again.... 6235 
Not anymore! 6224 
The very good YoYonisation! 6223 
….above and below two very clean channel. 6222 
The DHT and esoteric imaging deformation. 6209 
DHT, YO186, or??? 6209 
I had no idea how ‘different’ it is. 6156 
The Kazitsky Manufacturing and YO104, some history. 6155 
"Absolution and Eternal Refuge." 6152 
Sofia Electric Type 45 Mesh 6142 
The true association of YO186's Sounds. 5904 
All the Best from Burgundy 5904 
Cheesy tubes 5903 
Me and my DHT references… 5794 
Y0-186 in winter. 5697 
Y0-186 sounds like… 5696 
Rethinking the YO186 tube. 5665 
In My Dreams 5665 
Grunt from type 45? A ridicules comment. 5665 
Blame? 5664 
When good is not good enough. 5664 
45s, Drivers, and 45s 5664 
Hm, that was so simple after all! 5663 
How the YO186 was used. 5247 
What is old is new? 5246 
YO186 vs. type 45. 5245 
The YO186 is gone.... :-( 4794 
That sucks. 4794 
YO186 4792 
Hm, what the hell is going on? 4792 
I do not think that anybody but me would like YO186 4792 
A hallucination? 4789 
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