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Site News: 17 May 2026

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Romy The Cat's Playback
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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 6420 
One-stage Milq++ and the DHT's alleged tone 6419 
DHT Milq? 6419 
The DHT journey. 6419 
DHT tone 6419 
Well, why not? 6418 
Holding the Fort 6418 
My DHT experiment: Preface 6418 
Input tube and DC heaters 6417 
Reimyo Pat 777 6417 
My DHT experiment: Observations 6413 
DHT or 300B? 6413 
300B 6413 
Talking, perception and the grounds for objectively 6413 
The Wine Via the Wine Glass 6412 
Hence the confusion 6412 
My DHT experiment: some conclusions. 6412 
Reality Reconstruction is not a functionality. 6412 
My experience with DHTs 6412 
Pigmented coloration? 6412 
Dht-dht 6412 
Dynamic viscosity? 6412 
The Pallette preamp... 6412 
If one DHT is good, two must be better? 6412 
"soul" of tubes 6412 
There is a difference... 6412 
Vibration injection? 6412 
Homework # 4334 6412 
The 01A-71A-10Y-45 chain 6412 
Old valves have more soul! 6411 
Was it soul or soil? 6411 
It was just a heading 6411 
Adjustable color: TIMBRE LOCK? 6411 
Neutral or neutral/uncoloured? 6411 
..are lacking in power, dynamics and bandwidth. 6411 
Timbre-Lock. Not quite ready for prime time. 6411 
Injection of analog dither? 6411 
Subliminal signal 6411 
The idea of analog randomanization. 6411 
Okay, what Avicena Power Generator 6411 
I hope you will be hearing about it. 6410 
Avicenna = Arabian 6410 
Persian, not Arab 6410 
The “second solution” - a major disappointment 6410 
More words to describe "sux" please 6410 
Revolution 6410 
The non-melodramatic DHT? 6410 
One-stage DHTs 6409 
One other thing 6409 
One stage 6409 
Brewing, thinking and heating 6409 
Physical characteristics of electronic devices 6409 
I see the things differently. 6409 
Don't waste time being "creative" 6409 
The audiophile attitude 6409 
The where and why of design choices 6409 
Blah blah blah 6409 
Laconic Clarity vs. Comfort vs. Nostalgia 6409 
Do I need to be hissing? 6409 
...associated with lack of neutrality and colorati... 6409 
John Broskie's Partial feedback amplifier 6409 
Randomness vs. freedom and the Homework # 4334 6408 
What is randomness? 6408 
Those least three possibilities… 6408 
Randomness and Music's Prerogative 6408 
It works, … sort of. The revolution is canceled. 6408 
Thorsten Loesch’s article about DHT SETs 6406 
A Beautiful Mind 6405 
Some summary and conclusions from the first phase. 6403 
Second phase: revising requirement for my DHT objectives. 6388 
Tubes for your DHT amp 6388 
Abandoning Milq? 6388 
Will see how it goes.... 6388 
Single-stage Milq vs. Sun Audio VT-2A3 6386 
Topology and 2A3? 6386 
6SN7-2A3 amps? 6386 
Type Casting 6386 
Sun Audio SV-2A3 6386 
6sn7-2a3 6386 
Topology vs parts 6386 
For a DHT amp, you are listening to the power supply 6386 
The vintage tubes syndrome. 6386 
Parts Frenzy 6386 
Too many new sounds 6386 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6385 
New tubes 6384 
Milq bias vs. batery bias 6384 
The batteries are a tricky thing. 6384 
Swimming the ocean at night? 6384 
New 2A3 6384 
To kill of do not kill the capacitor. 6383 
The JJ Electronic amp. 6382 
JJ 2A3 and amp 6382 
Czech tubes 6380 
Single plated vs Double plated? 6380 
Mono plate 2A3 tubes 6380 
I suggested once VT52 tube 6379 
The 800R vs. 1800R vs. 5500R 6379 
YO-186 as the output tube. 6376 
Here she is. 6375 
Some talks about the new production tubes 6371 
New 2A3 tubes 6371 
Some thoughts about one-IHT vs. multiple-DHT 6371 
The Sun Audio with 6E5P 6370 
Multistage DHT circuits 6369 
Wrong tube or wrong topology – here is the question. 6368 
Emission Labs 2A3 6368 
Some comment and questions about then 2A3 talks. 6368 
Which Chinese 2A3? 6368 
OK, for a first time I like the San Audio Kit. 6368 
The YO186 Strip Show 6368 
More on the 2A3 comparisons 6367 
It will be interesting…. 6367 
OPT impedence 6367 
More about the Plate Loading 6367 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6362 
2A3 data 6362 
The New 2A3 tubes 6362 
How many stages I need for 110dB sensitivity, smal... 6362 
How many stages and why... and who makes that 45 o... 6361 
Everything about everything. 6361 
Some very good points... and... possibly more logi... 6361 
Options, options, options.... 6361 
I think we agree overall 6361 
An IDHT with more gain? 6360 
You don't ask for much now, eh? 6360 
2A3 tube impressions 6355 
Interesting analogy 6355 
NOS 2A3 tubes versus new tubes 6355 
Hmmm, let me try this one again... 6355 
Sylvania 2A3 identification 6355 
A picture is worth a thousand micromhos? 6355 
I have more interest in the period tubes 6355 
Why NOS tubes? 6354 
The Holly Ignorance 6354 
Tube tasting 6354 
The cathodes’ flatulence? 6354 
Make mine thoriated please 6354 
Any Germans out there? 6354 
6E5P VS 6E6P 6354 
Vibrations? What do you with them? 6354 
Vibration in tubes and sounds 6354 
UX4 vs UX4ruskie 6353 
Ringing the tubes? I do not know how about that. 6353 
Tube sound and vibration 6353 
The thoughts collection about YO186? 6347 
The lights look green for the YO tube 6346 
"Melquiades" with YO-186. Something like... 6346 
My version of RE-604 and PX4 6345 
The YO186 tube sockets. 6345 
B4/B5 British made 6344 
The YO186’s sockets and prices 6344 
DHT 2A3 amplifier rectification 6343 
My attitude toward tube rectification. 6343 
Tu-be or not Tu-be, seems Tu-be the question. 6342 
It looks like DHT DSET is shaping up. 6341 
The Sylvania 2A3 NOS report 6338 
The Citizen Kane syndrome. 6338 
Sylvania 2A3 in a World without Color 6337 
Are NOS and new manufacture comparing oranges to o... 6337 
That all is incorrect in a way…. 6337 
NOS vs new 2A3 tubes 6337 
The identical operation environment? 6337 
Preferred 2A3 operating point 6337 
The sound of the 2A3 however? 6337 
Circuit modification for 2A3 optimization 6336 
How to get max power from 2A3 6336 
2A3 voltages, loads and realized output power 6336 
Optimal operation of 2A3: an experiment 6336 
Tubes, Whole Circuits, Expectations and Sound 6336 
Gain is not power. 6336 
2A3 amplifier modification & Optimization 6336 
Specialized DSET approach 6336 
6C33/2A3 DSET? 6336 
SET usable power and making the most of it 6336 
The 2A3 loading 6336 
DSET solution for EdgarHorn? 6336 
Optimizing the 2A3 6336 
How much to DSET a DSET 6336 
DSET for Titan 6336 
The Best of All Worlds 6336 
Multiamp setup 6335 
Optimizing the (NOS) 2A3... "KM-style"? 6335 
There are many opportunities, it all depends what ... 6335 
Modifying amplifer to optimize NOS 2A3 performance 6335 
Conceptualizing Melquiades DSET is done 6329 
2A3 and 400V supply 6329 
Pudding and the chicken wires 6328 
Another shot at numbers 6328 
How to cook the "uninformed" anode. 6328 
Okay, so this might work.... 6328 
The DHT Milq DSET, the prebuilt draft. 6328 
Looks good, but.... 6327 
2A3 with slightly lover filament voltage? 6327 
Less is more... usually. 6327 
Where to burn gain? how? and where to get beter st... 6326 
Stepping Out 6326 
Said to be good, but 6326 
Gain to lose 6326 
Why nothing is simple with this damn amp! 6326 
Another idea for losing gain 6326 
What's best 6326 
Options, options... 6326 
Actually, it is not so bad. 6326 
Other compromises... 6325 
Cathode vs. fixed with DHT 6324 
Is it glowing yet? 6304 
It is comming.... 6304 
The new MF channel. 6298 
I started to work on the Milq’s DHT Island. 6297 
Innerstage loading vs. OPT loading. 6289 
The intestage loading talk. 6286 
My playback feels like it is broken. 6281 
1 in 50? 6281 
Yes, it was after PP2000 6281 
Die Walküre soldering. 6280 
The post Die Walküre soldering 6279 
Another amp arond YO186 6278 
Gain? 6278 
The Unexpected problem with DHT Milq. 6278 
Simple is good 6277 
Ok, I am moving forward. 6277 
The Milq DSET is up. 6276 
My DH DSET – 2 days later. 6274 
Here is more data to reconcile. 6274 
Hm, that is interesting and unpleasant so far. 6273 
Ok, what do I want? 6273 
Let Go of Some Conceptual "Restrictions"? 6273 
The Milq DH DSET, the further thoughts in progress. 6273 
Crunching Numbers; Shaping Sound 6273 
How about the tweeter? 6272 
Tweeter Efficiency? 6272 
Safe and Sound 6272 
More mystery with tweeter but still on the subject. 6272 
Some clarifications. 6272 
How about that?!!! 6272 
Further considerations: DC-coupling. 6270 
Head Room 6270 
To kill the mandatory 13dB 6269 
DC coupling and killing 13db and driving 6e5p miller and.... 6269 
I do not think that it might be damaging… 6269 
Again with the PS 6269 
AKA J.C. Morrison’s amp but… 6267 
Parallel Universe 6267 
Melquiades HD MF DSET, Draft13. 6265 
Why I let other people build them... 6265 
Ok, it's going to right direction. 6265 
Ok, it looks already very close…. 6264 
The Loftinish-Whitish, well sort of…. 6261 
MF: the pre-final version. 6261 
Loftin-White? 6261 
Did anyone hear the PX4 amplifiers? 6261 
What Could use Improving at This Point? 6261 
The Milq’s MF front-end is done 6257 
Why I Let Other People Build Them, II 6257 
Define really quiet 6256 
Another variable of sound 6256 
Backlash? 6256 
Alternative filament supplies 6256 
I kind of faced a problem with AC 6256 
Going down the DC path 6255 
It is not about the “whole sound” but about “molec... 6255 
Molecular sound 6255 
AC-DC heater supply 6255 
The Tentlabs are $10 worth PS. 6255 
The unexpected resolution of AC vs. DC quandary. 6255 
The devil is less scared than it depicted. 6255 
Hiss or Hum 6255 
AC transformers 6255 
I have seen the Promised Land 6254 
OK, the choke noise is not a problem anymore 6254 
Ok, it is working fine but… 6253 
Divide and Conquer 6253 
The design phase is over. 6252 
The unexpected insanity! 6251 
Loading 6251 
Looking for inspiring ideas for 'universal' loadin... 6251 
A filaments Sherlock Holmes wanted. 6251 
Going the Distance 6251 
Read the f*** manual! 6251 
Agreed. 6251 
I agree 6251 
The filament transformer 6251 
Center-tap and options 6251 
Something like this…. 6251 
Avoiding "Dial-an-Amp" 6251 
The foreplay is going on. 6251 
Split balance 6250 
Further thoughts about my DH filaments 6250 
The Shuguang 2A3 tubes. 6250 
SHuguang 6250 
Going through…. 6249 
The 2.5V noise vs. 4V noise. 6248 
More about Shuguang 2A3C 6248 
Hum vs voltage 6248 
Meow about the tubes… 6248 
To Be a Content Cat 6248 
Completed! 6245 
Tradition 6245 
Absolutely beautiful! 6245 
The 'film' caps in PS 6244 
Science or religion 6244 
Mass Extinction 6244 
Electrolytics, technology and time 6244 
No more questions about PS capacitors. 6244 
Capacitor choices 6244 
Good time. Welcome back. Thanks God. 6243 
The minor day of Quartets. 6243 
Them's the Breaks 6243 
Eventually! 6242 
So Soon? 6242 
DHT MF channel and 6-ch amp: first conclusions 6242 
All Abuzz about Nothing 6241 
The wire for DC-coupling 6241 
The Dirt on DIY Backlash 6241 
DSET vs. the “better tubes”. 6241 
How to test the DH tubes properly? 6240 
Pairing up tubes for SE use 6239 
The DHT live reserve 6238 
Some interestng models 6238 
Eaten alive. 6238 
The tubey déjà vu? 6237 
The new concept of my output transformer. 6233 
The 4V takes a lead. 6229 
Listening the DH and the striped down version of M... 6226 
I kind of slowly learn what I need. 6226 
More HF from a transformer and DHT? 6224 
Since You Don't Need the Gain 6223 
Exiting the design mode? 6223 
Bye-bye the input divider on MF! 6223 
A few steps back and a gaint leap ahead. 6219 
Single-stage vs. DHT amp. 6218 
Setting up the new Playback 6217 
And the winner is… so far 6214 
If you like type 45... 6214 
Type 45... they're not all the same 6214 
Favorite Flavor? 6214 
The 45 times Meow... 6214 
The problem that I see is… 6214 
Running the 45 6214 
The 10Y...and bye bye Newton 6213 
The commentaries about everything. 6213 
Driver tube and biasing 6213 
DHT drivers 6213 
The ideas are worth trying? 6213 
A question about the polishing the things…. 6209 
The Particular Tube, I'm afraid... 6209 
Driving the 45... cathode first 6208 
ST or Globe; old or new... 6208 
Whatever sticks to the wall as an operation point ... 6208 
The attenuating crap in secondary. 6208 
Operating points and cathode current 6208 
The Burgeoning Opportunities! 6208 
Actually it is not so simple. 6208 
Resistors at the front 6207 
A minor alternation of a position 6207 
The era of enlightenment. 6204 
The devil is in the details.... 6204 
Constructing Sound 6204 
A new view on the DHT evaluation. 6203 
The “strange” YO186 6194 
The dead guy’s lessons. 6149 
2S4S and 2A3 6140 
Ho to use the YO186 6133 
YO 186 fundamental flavor 6133 
The YO-YO tube and "fundamentals" channel 6133 
The live without the YO186, again.... 6131 
Not anymore! 6120 
The very good YoYonisation! 6119 
….above and below two very clean channel. 6118 
The DHT and esoteric imaging deformation. 6105 
DHT, YO186, or??? 6105 
I had no idea how ‘different’ it is. 6052 
The Kazitsky Manufacturing and YO104, some history. 6051 
"Absolution and Eternal Refuge." 6048 
Sofia Electric Type 45 Mesh 6038 
The true association of YO186's Sounds. 5800 
All the Best from Burgundy 5800 
Cheesy tubes 5799 
Me and my DHT references… 5690 
Y0-186 in winter. 5593 
Y0-186 sounds like… 5592 
Rethinking the YO186 tube. 5561 
In My Dreams 5561 
Grunt from type 45? A ridicules comment. 5561 
Blame? 5560 
When good is not good enough. 5560 
45s, Drivers, and 45s 5560 
Hm, that was so simple after all! 5559 
How the YO186 was used. 5143 
What is old is new? 5142 
YO186 vs. type 45. 5141 
The YO186 is gone.... :-( 4690 
That sucks. 4690 
YO186 4688 
Hm, what the hell is going on? 4688 
I do not think that anybody but me would like YO186 4688 
A hallucination? 4685 
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