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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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Macondo Acoustic System
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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 6494 
One-stage Milq++ and the DHT's alleged tone 6493 
DHT Milq? 6493 
The DHT journey. 6493 
DHT tone 6493 
Well, why not? 6492 
Holding the Fort 6492 
My DHT experiment: Preface 6492 
Input tube and DC heaters 6491 
Reimyo Pat 777 6491 
My DHT experiment: Observations 6487 
DHT or 300B? 6487 
300B 6487 
Talking, perception and the grounds for objectively 6487 
The Wine Via the Wine Glass 6486 
Hence the confusion 6486 
My DHT experiment: some conclusions. 6486 
Reality Reconstruction is not a functionality. 6486 
My experience with DHTs 6486 
Pigmented coloration? 6486 
Dht-dht 6486 
Dynamic viscosity? 6486 
The Pallette preamp... 6486 
If one DHT is good, two must be better? 6486 
"soul" of tubes 6486 
There is a difference... 6486 
Vibration injection? 6486 
Homework # 4334 6486 
The 01A-71A-10Y-45 chain 6486 
Old valves have more soul! 6485 
Was it soul or soil? 6485 
It was just a heading 6485 
Adjustable color: TIMBRE LOCK? 6485 
Neutral or neutral/uncoloured? 6485 
..are lacking in power, dynamics and bandwidth. 6485 
Timbre-Lock. Not quite ready for prime time. 6485 
Injection of analog dither? 6485 
Subliminal signal 6485 
The idea of analog randomanization. 6485 
Okay, what Avicena Power Generator 6485 
I hope you will be hearing about it. 6484 
Avicenna = Arabian 6484 
Persian, not Arab 6484 
The “second solution” - a major disappointment 6484 
More words to describe "sux" please 6484 
Revolution 6484 
The non-melodramatic DHT? 6484 
One-stage DHTs 6483 
One other thing 6483 
One stage 6483 
Brewing, thinking and heating 6483 
Physical characteristics of electronic devices 6483 
I see the things differently. 6483 
Don't waste time being "creative" 6483 
The audiophile attitude 6483 
The where and why of design choices 6483 
Blah blah blah 6483 
Laconic Clarity vs. Comfort vs. Nostalgia 6483 
Do I need to be hissing? 6483 
...associated with lack of neutrality and colorati... 6483 
John Broskie's Partial feedback amplifier 6483 
Randomness vs. freedom and the Homework # 4334 6482 
What is randomness? 6482 
Those least three possibilities… 6482 
Randomness and Music's Prerogative 6482 
It works, … sort of. The revolution is canceled. 6482 
Thorsten Loesch’s article about DHT SETs 6480 
A Beautiful Mind 6479 
Some summary and conclusions from the first phase. 6477 
Second phase: revising requirement for my DHT objectives. 6462 
Tubes for your DHT amp 6462 
Abandoning Milq? 6462 
Will see how it goes.... 6462 
Single-stage Milq vs. Sun Audio VT-2A3 6460 
Topology and 2A3? 6460 
6SN7-2A3 amps? 6460 
Type Casting 6460 
Sun Audio SV-2A3 6460 
6sn7-2a3 6460 
Topology vs parts 6460 
For a DHT amp, you are listening to the power supply 6460 
The vintage tubes syndrome. 6460 
Parts Frenzy 6460 
Too many new sounds 6460 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6459 
New tubes 6458 
Milq bias vs. batery bias 6458 
The batteries are a tricky thing. 6458 
Swimming the ocean at night? 6458 
New 2A3 6458 
To kill of do not kill the capacitor. 6457 
The JJ Electronic amp. 6456 
JJ 2A3 and amp 6456 
Czech tubes 6454 
Single plated vs Double plated? 6454 
Mono plate 2A3 tubes 6454 
I suggested once VT52 tube 6453 
The 800R vs. 1800R vs. 5500R 6453 
YO-186 as the output tube. 6450 
Here she is. 6449 
Some talks about the new production tubes 6445 
New 2A3 tubes 6445 
Some thoughts about one-IHT vs. multiple-DHT 6445 
The Sun Audio with 6E5P 6444 
Multistage DHT circuits 6443 
Wrong tube or wrong topology – here is the question. 6442 
Emission Labs 2A3 6442 
Some comment and questions about then 2A3 talks. 6442 
Which Chinese 2A3? 6442 
OK, for a first time I like the San Audio Kit. 6442 
The YO186 Strip Show 6442 
More on the 2A3 comparisons 6441 
It will be interesting…. 6441 
OPT impedence 6441 
More about the Plate Loading 6441 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6436 
2A3 data 6436 
The New 2A3 tubes 6436 
How many stages I need for 110dB sensitivity, smal... 6436 
How many stages and why... and who makes that 45 o... 6435 
Everything about everything. 6435 
Some very good points... and... possibly more logi... 6435 
Options, options, options.... 6435 
I think we agree overall 6435 
An IDHT with more gain? 6434 
You don't ask for much now, eh? 6434 
2A3 tube impressions 6429 
Interesting analogy 6429 
NOS 2A3 tubes versus new tubes 6429 
Hmmm, let me try this one again... 6429 
Sylvania 2A3 identification 6429 
A picture is worth a thousand micromhos? 6429 
I have more interest in the period tubes 6429 
Why NOS tubes? 6428 
The Holly Ignorance 6428 
Tube tasting 6428 
The cathodes’ flatulence? 6428 
Make mine thoriated please 6428 
Any Germans out there? 6428 
6E5P VS 6E6P 6428 
Vibrations? What do you with them? 6428 
Vibration in tubes and sounds 6428 
UX4 vs UX4ruskie 6427 
Ringing the tubes? I do not know how about that. 6427 
Tube sound and vibration 6427 
The thoughts collection about YO186? 6421 
The lights look green for the YO tube 6420 
"Melquiades" with YO-186. Something like... 6420 
My version of RE-604 and PX4 6419 
The YO186 tube sockets. 6419 
B4/B5 British made 6418 
The YO186’s sockets and prices 6418 
DHT 2A3 amplifier rectification 6417 
My attitude toward tube rectification. 6417 
Tu-be or not Tu-be, seems Tu-be the question. 6416 
It looks like DHT DSET is shaping up. 6415 
The Sylvania 2A3 NOS report 6412 
The Citizen Kane syndrome. 6412 
Sylvania 2A3 in a World without Color 6411 
Are NOS and new manufacture comparing oranges to o... 6411 
That all is incorrect in a way…. 6411 
NOS vs new 2A3 tubes 6411 
The identical operation environment? 6411 
Preferred 2A3 operating point 6411 
The sound of the 2A3 however? 6411 
Circuit modification for 2A3 optimization 6410 
How to get max power from 2A3 6410 
2A3 voltages, loads and realized output power 6410 
Optimal operation of 2A3: an experiment 6410 
Tubes, Whole Circuits, Expectations and Sound 6410 
Gain is not power. 6410 
2A3 amplifier modification & Optimization 6410 
Specialized DSET approach 6410 
6C33/2A3 DSET? 6410 
SET usable power and making the most of it 6410 
The 2A3 loading 6410 
DSET solution for EdgarHorn? 6410 
Optimizing the 2A3 6410 
How much to DSET a DSET 6410 
DSET for Titan 6410 
The Best of All Worlds 6410 
Multiamp setup 6409 
Optimizing the (NOS) 2A3... "KM-style"? 6409 
There are many opportunities, it all depends what ... 6409 
Modifying amplifer to optimize NOS 2A3 performance 6409 
Conceptualizing Melquiades DSET is done 6403 
2A3 and 400V supply 6403 
Pudding and the chicken wires 6402 
Another shot at numbers 6402 
How to cook the "uninformed" anode. 6402 
Okay, so this might work.... 6402 
The DHT Milq DSET, the prebuilt draft. 6402 
Looks good, but.... 6401 
2A3 with slightly lover filament voltage? 6401 
Less is more... usually. 6401 
Where to burn gain? how? and where to get beter st... 6400 
Stepping Out 6400 
Said to be good, but 6400 
Gain to lose 6400 
Why nothing is simple with this damn amp! 6400 
Another idea for losing gain 6400 
What's best 6400 
Options, options... 6400 
Actually, it is not so bad. 6400 
Other compromises... 6399 
Cathode vs. fixed with DHT 6398 
Is it glowing yet? 6378 
It is comming.... 6378 
The new MF channel. 6372 
I started to work on the Milq’s DHT Island. 6371 
Innerstage loading vs. OPT loading. 6363 
The intestage loading talk. 6360 
My playback feels like it is broken. 6355 
1 in 50? 6355 
Yes, it was after PP2000 6355 
Die Walküre soldering. 6354 
The post Die Walküre soldering 6353 
Another amp arond YO186 6352 
Gain? 6352 
The Unexpected problem with DHT Milq. 6352 
Simple is good 6351 
Ok, I am moving forward. 6351 
The Milq DSET is up. 6350 
My DH DSET – 2 days later. 6348 
Here is more data to reconcile. 6348 
Hm, that is interesting and unpleasant so far. 6347 
Ok, what do I want? 6347 
Let Go of Some Conceptual "Restrictions"? 6347 
The Milq DH DSET, the further thoughts in progress. 6347 
Crunching Numbers; Shaping Sound 6347 
How about the tweeter? 6346 
Tweeter Efficiency? 6346 
Safe and Sound 6346 
More mystery with tweeter but still on the subject. 6346 
Some clarifications. 6346 
How about that?!!! 6346 
Further considerations: DC-coupling. 6344 
Head Room 6344 
To kill the mandatory 13dB 6343 
DC coupling and killing 13db and driving 6e5p miller and.... 6343 
I do not think that it might be damaging… 6343 
Again with the PS 6343 
AKA J.C. Morrison’s amp but… 6341 
Parallel Universe 6341 
Melquiades HD MF DSET, Draft13. 6339 
Why I let other people build them... 6339 
Ok, it's going to right direction. 6339 
Ok, it looks already very close…. 6338 
The Loftinish-Whitish, well sort of…. 6335 
MF: the pre-final version. 6335 
Loftin-White? 6335 
Did anyone hear the PX4 amplifiers? 6335 
What Could use Improving at This Point? 6335 
The Milq’s MF front-end is done 6331 
Why I Let Other People Build Them, II 6331 
Define really quiet 6330 
Another variable of sound 6330 
Backlash? 6330 
Alternative filament supplies 6330 
I kind of faced a problem with AC 6330 
Going down the DC path 6329 
It is not about the “whole sound” but about “molec... 6329 
Molecular sound 6329 
AC-DC heater supply 6329 
The Tentlabs are $10 worth PS. 6329 
The unexpected resolution of AC vs. DC quandary. 6329 
The devil is less scared than it depicted. 6329 
Hiss or Hum 6329 
AC transformers 6329 
I have seen the Promised Land 6328 
OK, the choke noise is not a problem anymore 6328 
Ok, it is working fine but… 6327 
Divide and Conquer 6327 
The design phase is over. 6326 
The unexpected insanity! 6325 
Loading 6325 
Looking for inspiring ideas for 'universal' loadin... 6325 
A filaments Sherlock Holmes wanted. 6325 
Going the Distance 6325 
Read the f*** manual! 6325 
Agreed. 6325 
I agree 6325 
The filament transformer 6325 
Center-tap and options 6325 
Something like this…. 6325 
Avoiding "Dial-an-Amp" 6325 
The foreplay is going on. 6325 
Split balance 6324 
Further thoughts about my DH filaments 6324 
The Shuguang 2A3 tubes. 6324 
SHuguang 6324 
Going through…. 6323 
The 2.5V noise vs. 4V noise. 6322 
More about Shuguang 2A3C 6322 
Hum vs voltage 6322 
Meow about the tubes… 6322 
To Be a Content Cat 6322 
Completed! 6319 
Tradition 6319 
Absolutely beautiful! 6319 
The 'film' caps in PS 6318 
Science or religion 6318 
Mass Extinction 6318 
Electrolytics, technology and time 6318 
No more questions about PS capacitors. 6318 
Capacitor choices 6318 
Good time. Welcome back. Thanks God. 6317 
The minor day of Quartets. 6317 
Them's the Breaks 6317 
Eventually! 6316 
So Soon? 6316 
DHT MF channel and 6-ch amp: first conclusions 6316 
All Abuzz about Nothing 6315 
The wire for DC-coupling 6315 
The Dirt on DIY Backlash 6315 
DSET vs. the “better tubes”. 6315 
How to test the DH tubes properly? 6314 
Pairing up tubes for SE use 6313 
The DHT live reserve 6312 
Some interestng models 6312 
Eaten alive. 6312 
The tubey déjà vu? 6311 
The new concept of my output transformer. 6307 
The 4V takes a lead. 6303 
Listening the DH and the striped down version of M... 6300 
I kind of slowly learn what I need. 6300 
More HF from a transformer and DHT? 6298 
Since You Don't Need the Gain 6297 
Exiting the design mode? 6297 
Bye-bye the input divider on MF! 6297 
A few steps back and a gaint leap ahead. 6293 
Single-stage vs. DHT amp. 6292 
Setting up the new Playback 6291 
And the winner is… so far 6288 
If you like type 45... 6288 
Type 45... they're not all the same 6288 
Favorite Flavor? 6288 
The 45 times Meow... 6288 
The problem that I see is… 6288 
Running the 45 6288 
The 10Y...and bye bye Newton 6287 
The commentaries about everything. 6287 
Driver tube and biasing 6287 
DHT drivers 6287 
The ideas are worth trying? 6287 
A question about the polishing the things…. 6283 
The Particular Tube, I'm afraid... 6283 
Driving the 45... cathode first 6282 
ST or Globe; old or new... 6282 
Whatever sticks to the wall as an operation point ... 6282 
The attenuating crap in secondary. 6282 
Operating points and cathode current 6282 
The Burgeoning Opportunities! 6282 
Actually it is not so simple. 6282 
Resistors at the front 6281 
A minor alternation of a position 6281 
The era of enlightenment. 6278 
The devil is in the details.... 6278 
Constructing Sound 6278 
A new view on the DHT evaluation. 6277 
The “strange” YO186 6268 
The dead guy’s lessons. 6223 
2S4S and 2A3 6214 
Ho to use the YO186 6207 
YO 186 fundamental flavor 6207 
The YO-YO tube and "fundamentals" channel 6207 
The live without the YO186, again.... 6205 
Not anymore! 6194 
The very good YoYonisation! 6193 
….above and below two very clean channel. 6192 
The DHT and esoteric imaging deformation. 6179 
DHT, YO186, or??? 6179 
I had no idea how ‘different’ it is. 6126 
The Kazitsky Manufacturing and YO104, some history. 6125 
"Absolution and Eternal Refuge." 6122 
Sofia Electric Type 45 Mesh 6112 
The true association of YO186's Sounds. 5874 
All the Best from Burgundy 5874 
Cheesy tubes 5873 
Me and my DHT references… 5764 
Y0-186 in winter. 5667 
Y0-186 sounds like… 5666 
Rethinking the YO186 tube. 5635 
In My Dreams 5635 
Grunt from type 45? A ridicules comment. 5635 
Blame? 5634 
When good is not good enough. 5634 
45s, Drivers, and 45s 5634 
Hm, that was so simple after all! 5633 
How the YO186 was used. 5217 
What is old is new? 5216 
YO186 vs. type 45. 5215 
The YO186 is gone.... :-( 4764 
That sucks. 4764 
YO186 4762 
Hm, what the hell is going on? 4762 
I do not think that anybody but me would like YO186 4762 
A hallucination? 4759 
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