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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

Audio Knowledge Tree ™
Romy's "Audio Rules"
Audiophile Satire
Melquiades SET Amplifier
Macondo Acoustic System
End of Life Phonostage
Audio Demoronizator AD-1
My Exotic Audio Leftovers
My Playback System
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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 6507 
One-stage Milq++ and the DHT's alleged tone 6506 
DHT Milq? 6506 
The DHT journey. 6506 
DHT tone 6506 
Well, why not? 6505 
Holding the Fort 6505 
My DHT experiment: Preface 6505 
Input tube and DC heaters 6504 
Reimyo Pat 777 6504 
My DHT experiment: Observations 6500 
DHT or 300B? 6500 
300B 6500 
Talking, perception and the grounds for objectively 6500 
The Wine Via the Wine Glass 6499 
Hence the confusion 6499 
My DHT experiment: some conclusions. 6499 
Reality Reconstruction is not a functionality. 6499 
My experience with DHTs 6499 
Pigmented coloration? 6499 
Dht-dht 6499 
Dynamic viscosity? 6499 
The Pallette preamp... 6499 
If one DHT is good, two must be better? 6499 
"soul" of tubes 6499 
There is a difference... 6499 
Vibration injection? 6499 
Homework # 4334 6499 
The 01A-71A-10Y-45 chain 6499 
Old valves have more soul! 6498 
Was it soul or soil? 6498 
It was just a heading 6498 
Adjustable color: TIMBRE LOCK? 6498 
Neutral or neutral/uncoloured? 6498 
..are lacking in power, dynamics and bandwidth. 6498 
Timbre-Lock. Not quite ready for prime time. 6498 
Injection of analog dither? 6498 
Subliminal signal 6498 
The idea of analog randomanization. 6498 
Okay, what Avicena Power Generator 6498 
I hope you will be hearing about it. 6497 
Avicenna = Arabian 6497 
Persian, not Arab 6497 
The “second solution” - a major disappointment 6497 
More words to describe "sux" please 6497 
Revolution 6497 
The non-melodramatic DHT? 6497 
One-stage DHTs 6496 
One other thing 6496 
One stage 6496 
Brewing, thinking and heating 6496 
Physical characteristics of electronic devices 6496 
I see the things differently. 6496 
Don't waste time being "creative" 6496 
The audiophile attitude 6496 
The where and why of design choices 6496 
Blah blah blah 6496 
Laconic Clarity vs. Comfort vs. Nostalgia 6496 
Do I need to be hissing? 6496 
...associated with lack of neutrality and colorati... 6496 
John Broskie's Partial feedback amplifier 6496 
Randomness vs. freedom and the Homework # 4334 6495 
What is randomness? 6495 
Those least three possibilities… 6495 
Randomness and Music's Prerogative 6495 
It works, … sort of. The revolution is canceled. 6495 
Thorsten Loesch’s article about DHT SETs 6493 
A Beautiful Mind 6492 
Some summary and conclusions from the first phase. 6490 
Second phase: revising requirement for my DHT objectives. 6475 
Tubes for your DHT amp 6475 
Abandoning Milq? 6475 
Will see how it goes.... 6475 
Single-stage Milq vs. Sun Audio VT-2A3 6473 
Topology and 2A3? 6473 
6SN7-2A3 amps? 6473 
Type Casting 6473 
Sun Audio SV-2A3 6473 
6sn7-2a3 6473 
Topology vs parts 6473 
For a DHT amp, you are listening to the power supply 6473 
The vintage tubes syndrome. 6473 
Parts Frenzy 6473 
Too many new sounds 6473 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6472 
New tubes 6471 
Milq bias vs. batery bias 6471 
The batteries are a tricky thing. 6471 
Swimming the ocean at night? 6471 
New 2A3 6471 
To kill of do not kill the capacitor. 6470 
The JJ Electronic amp. 6469 
JJ 2A3 and amp 6469 
Czech tubes 6467 
Single plated vs Double plated? 6467 
Mono plate 2A3 tubes 6467 
I suggested once VT52 tube 6466 
The 800R vs. 1800R vs. 5500R 6466 
YO-186 as the output tube. 6463 
Here she is. 6462 
Some talks about the new production tubes 6458 
New 2A3 tubes 6458 
Some thoughts about one-IHT vs. multiple-DHT 6458 
The Sun Audio with 6E5P 6457 
Multistage DHT circuits 6456 
Wrong tube or wrong topology – here is the question. 6455 
Emission Labs 2A3 6455 
Some comment and questions about then 2A3 talks. 6455 
Which Chinese 2A3? 6455 
OK, for a first time I like the San Audio Kit. 6455 
The YO186 Strip Show 6455 
More on the 2A3 comparisons 6454 
It will be interesting…. 6454 
OPT impedence 6454 
More about the Plate Loading 6454 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6449 
2A3 data 6449 
The New 2A3 tubes 6449 
How many stages I need for 110dB sensitivity, smal... 6449 
How many stages and why... and who makes that 45 o... 6448 
Everything about everything. 6448 
Some very good points... and... possibly more logi... 6448 
Options, options, options.... 6448 
I think we agree overall 6448 
An IDHT with more gain? 6447 
You don't ask for much now, eh? 6447 
2A3 tube impressions 6442 
Interesting analogy 6442 
NOS 2A3 tubes versus new tubes 6442 
Hmmm, let me try this one again... 6442 
Sylvania 2A3 identification 6442 
A picture is worth a thousand micromhos? 6442 
I have more interest in the period tubes 6442 
Why NOS tubes? 6441 
The Holly Ignorance 6441 
Tube tasting 6441 
The cathodes’ flatulence? 6441 
Make mine thoriated please 6441 
Any Germans out there? 6441 
6E5P VS 6E6P 6441 
Vibrations? What do you with them? 6441 
Vibration in tubes and sounds 6441 
UX4 vs UX4ruskie 6440 
Ringing the tubes? I do not know how about that. 6440 
Tube sound and vibration 6440 
The thoughts collection about YO186? 6434 
The lights look green for the YO tube 6433 
"Melquiades" with YO-186. Something like... 6433 
My version of RE-604 and PX4 6432 
The YO186 tube sockets. 6432 
B4/B5 British made 6431 
The YO186’s sockets and prices 6431 
DHT 2A3 amplifier rectification 6430 
My attitude toward tube rectification. 6430 
Tu-be or not Tu-be, seems Tu-be the question. 6429 
It looks like DHT DSET is shaping up. 6428 
The Sylvania 2A3 NOS report 6425 
The Citizen Kane syndrome. 6425 
Sylvania 2A3 in a World without Color 6424 
Are NOS and new manufacture comparing oranges to o... 6424 
That all is incorrect in a way…. 6424 
NOS vs new 2A3 tubes 6424 
The identical operation environment? 6424 
Preferred 2A3 operating point 6424 
The sound of the 2A3 however? 6424 
Circuit modification for 2A3 optimization 6423 
How to get max power from 2A3 6423 
2A3 voltages, loads and realized output power 6423 
Optimal operation of 2A3: an experiment 6423 
Tubes, Whole Circuits, Expectations and Sound 6423 
Gain is not power. 6423 
2A3 amplifier modification & Optimization 6423 
Specialized DSET approach 6423 
6C33/2A3 DSET? 6423 
SET usable power and making the most of it 6423 
The 2A3 loading 6423 
DSET solution for EdgarHorn? 6423 
Optimizing the 2A3 6423 
How much to DSET a DSET 6423 
DSET for Titan 6423 
The Best of All Worlds 6423 
Multiamp setup 6422 
Optimizing the (NOS) 2A3... "KM-style"? 6422 
There are many opportunities, it all depends what ... 6422 
Modifying amplifer to optimize NOS 2A3 performance 6422 
Conceptualizing Melquiades DSET is done 6416 
2A3 and 400V supply 6416 
Pudding and the chicken wires 6415 
Another shot at numbers 6415 
How to cook the "uninformed" anode. 6415 
Okay, so this might work.... 6415 
The DHT Milq DSET, the prebuilt draft. 6415 
Looks good, but.... 6414 
2A3 with slightly lover filament voltage? 6414 
Less is more... usually. 6414 
Where to burn gain? how? and where to get beter st... 6413 
Stepping Out 6413 
Said to be good, but 6413 
Gain to lose 6413 
Why nothing is simple with this damn amp! 6413 
Another idea for losing gain 6413 
What's best 6413 
Options, options... 6413 
Actually, it is not so bad. 6413 
Other compromises... 6412 
Cathode vs. fixed with DHT 6411 
Is it glowing yet? 6391 
It is comming.... 6391 
The new MF channel. 6385 
I started to work on the Milq’s DHT Island. 6384 
Innerstage loading vs. OPT loading. 6376 
The intestage loading talk. 6373 
My playback feels like it is broken. 6368 
1 in 50? 6368 
Yes, it was after PP2000 6368 
Die Walküre soldering. 6367 
The post Die Walküre soldering 6366 
Another amp arond YO186 6365 
Gain? 6365 
The Unexpected problem with DHT Milq. 6365 
Simple is good 6364 
Ok, I am moving forward. 6364 
The Milq DSET is up. 6363 
My DH DSET – 2 days later. 6361 
Here is more data to reconcile. 6361 
Hm, that is interesting and unpleasant so far. 6360 
Ok, what do I want? 6360 
Let Go of Some Conceptual "Restrictions"? 6360 
The Milq DH DSET, the further thoughts in progress. 6360 
Crunching Numbers; Shaping Sound 6360 
How about the tweeter? 6359 
Tweeter Efficiency? 6359 
Safe and Sound 6359 
More mystery with tweeter but still on the subject. 6359 
Some clarifications. 6359 
How about that?!!! 6359 
Further considerations: DC-coupling. 6357 
Head Room 6357 
To kill the mandatory 13dB 6356 
DC coupling and killing 13db and driving 6e5p miller and.... 6356 
I do not think that it might be damaging… 6356 
Again with the PS 6356 
AKA J.C. Morrison’s amp but… 6354 
Parallel Universe 6354 
Melquiades HD MF DSET, Draft13. 6352 
Why I let other people build them... 6352 
Ok, it's going to right direction. 6352 
Ok, it looks already very close…. 6351 
The Loftinish-Whitish, well sort of…. 6348 
MF: the pre-final version. 6348 
Loftin-White? 6348 
Did anyone hear the PX4 amplifiers? 6348 
What Could use Improving at This Point? 6348 
The Milq’s MF front-end is done 6344 
Why I Let Other People Build Them, II 6344 
Define really quiet 6343 
Another variable of sound 6343 
Backlash? 6343 
Alternative filament supplies 6343 
I kind of faced a problem with AC 6343 
Going down the DC path 6342 
It is not about the “whole sound” but about “molec... 6342 
Molecular sound 6342 
AC-DC heater supply 6342 
The Tentlabs are $10 worth PS. 6342 
The unexpected resolution of AC vs. DC quandary. 6342 
The devil is less scared than it depicted. 6342 
Hiss or Hum 6342 
AC transformers 6342 
I have seen the Promised Land 6341 
OK, the choke noise is not a problem anymore 6341 
Ok, it is working fine but… 6340 
Divide and Conquer 6340 
The design phase is over. 6339 
The unexpected insanity! 6338 
Loading 6338 
Looking for inspiring ideas for 'universal' loadin... 6338 
A filaments Sherlock Holmes wanted. 6338 
Going the Distance 6338 
Read the f*** manual! 6338 
Agreed. 6338 
I agree 6338 
The filament transformer 6338 
Center-tap and options 6338 
Something like this…. 6338 
Avoiding "Dial-an-Amp" 6338 
The foreplay is going on. 6338 
Split balance 6337 
Further thoughts about my DH filaments 6337 
The Shuguang 2A3 tubes. 6337 
SHuguang 6337 
Going through…. 6336 
The 2.5V noise vs. 4V noise. 6335 
More about Shuguang 2A3C 6335 
Hum vs voltage 6335 
Meow about the tubes… 6335 
To Be a Content Cat 6335 
Completed! 6332 
Tradition 6332 
Absolutely beautiful! 6332 
The 'film' caps in PS 6331 
Science or religion 6331 
Mass Extinction 6331 
Electrolytics, technology and time 6331 
No more questions about PS capacitors. 6331 
Capacitor choices 6331 
Good time. Welcome back. Thanks God. 6330 
The minor day of Quartets. 6330 
Them's the Breaks 6330 
Eventually! 6329 
So Soon? 6329 
DHT MF channel and 6-ch amp: first conclusions 6329 
All Abuzz about Nothing 6328 
The wire for DC-coupling 6328 
The Dirt on DIY Backlash 6328 
DSET vs. the “better tubes”. 6328 
How to test the DH tubes properly? 6327 
Pairing up tubes for SE use 6326 
The DHT live reserve 6325 
Some interestng models 6325 
Eaten alive. 6325 
The tubey déjà vu? 6324 
The new concept of my output transformer. 6320 
The 4V takes a lead. 6316 
Listening the DH and the striped down version of M... 6313 
I kind of slowly learn what I need. 6313 
More HF from a transformer and DHT? 6311 
Since You Don't Need the Gain 6310 
Exiting the design mode? 6310 
Bye-bye the input divider on MF! 6310 
A few steps back and a gaint leap ahead. 6306 
Single-stage vs. DHT amp. 6305 
Setting up the new Playback 6304 
And the winner is… so far 6301 
If you like type 45... 6301 
Type 45... they're not all the same 6301 
Favorite Flavor? 6301 
The 45 times Meow... 6301 
The problem that I see is… 6301 
Running the 45 6301 
The 10Y...and bye bye Newton 6300 
The commentaries about everything. 6300 
Driver tube and biasing 6300 
DHT drivers 6300 
The ideas are worth trying? 6300 
A question about the polishing the things…. 6296 
The Particular Tube, I'm afraid... 6296 
Driving the 45... cathode first 6295 
ST or Globe; old or new... 6295 
Whatever sticks to the wall as an operation point ... 6295 
The attenuating crap in secondary. 6295 
Operating points and cathode current 6295 
The Burgeoning Opportunities! 6295 
Actually it is not so simple. 6295 
Resistors at the front 6294 
A minor alternation of a position 6294 
The era of enlightenment. 6291 
The devil is in the details.... 6291 
Constructing Sound 6291 
A new view on the DHT evaluation. 6290 
The “strange” YO186 6281 
The dead guy’s lessons. 6236 
2S4S and 2A3 6227 
Ho to use the YO186 6220 
YO 186 fundamental flavor 6220 
The YO-YO tube and "fundamentals" channel 6220 
The live without the YO186, again.... 6218 
Not anymore! 6207 
The very good YoYonisation! 6206 
….above and below two very clean channel. 6205 
The DHT and esoteric imaging deformation. 6192 
DHT, YO186, or??? 6192 
I had no idea how ‘different’ it is. 6139 
The Kazitsky Manufacturing and YO104, some history. 6138 
"Absolution and Eternal Refuge." 6135 
Sofia Electric Type 45 Mesh 6125 
The true association of YO186's Sounds. 5887 
All the Best from Burgundy 5887 
Cheesy tubes 5886 
Me and my DHT references… 5777 
Y0-186 in winter. 5680 
Y0-186 sounds like… 5679 
Rethinking the YO186 tube. 5648 
In My Dreams 5648 
Grunt from type 45? A ridicules comment. 5648 
Blame? 5647 
When good is not good enough. 5647 
45s, Drivers, and 45s 5647 
Hm, that was so simple after all! 5646 
How the YO186 was used. 5230 
What is old is new? 5229 
YO186 vs. type 45. 5228 
The YO186 is gone.... :-( 4777 
That sucks. 4777 
YO186 4775 
Hm, what the hell is going on? 4775 
I do not think that anybody but me would like YO186 4775 
A hallucination? 4772 
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