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Site News: 16 Jan 2026
That old bug returned. Sometimes creation of new threat not going to work.  The replies still work. 
I will fix it soon.
Romy The Cat's Playback
Audio Knowledge Tree ™
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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 6272 
One-stage Milq++ and the DHT's alleged tone 6271 
DHT Milq? 6271 
The DHT journey. 6271 
DHT tone 6271 
Well, why not? 6270 
Holding the Fort 6270 
My DHT experiment: Preface 6270 
Input tube and DC heaters 6269 
Reimyo Pat 777 6269 
My DHT experiment: Observations 6265 
DHT or 300B? 6265 
300B 6265 
Talking, perception and the grounds for objectively 6265 
The Wine Via the Wine Glass 6264 
Hence the confusion 6264 
My DHT experiment: some conclusions. 6264 
Reality Reconstruction is not a functionality. 6264 
My experience with DHTs 6264 
Pigmented coloration? 6264 
Dht-dht 6264 
Dynamic viscosity? 6264 
The Pallette preamp... 6264 
If one DHT is good, two must be better? 6264 
"soul" of tubes 6264 
There is a difference... 6264 
Vibration injection? 6264 
Homework # 4334 6264 
The 01A-71A-10Y-45 chain 6264 
Old valves have more soul! 6263 
Was it soul or soil? 6263 
It was just a heading 6263 
Adjustable color: TIMBRE LOCK? 6263 
Neutral or neutral/uncoloured? 6263 
..are lacking in power, dynamics and bandwidth. 6263 
Timbre-Lock. Not quite ready for prime time. 6263 
Injection of analog dither? 6263 
Subliminal signal 6263 
The idea of analog randomanization. 6263 
Okay, what Avicena Power Generator 6263 
I hope you will be hearing about it. 6262 
Avicenna = Arabian 6262 
Persian, not Arab 6262 
The “second solution” - a major disappointment 6262 
More words to describe "sux" please 6262 
Revolution 6262 
The non-melodramatic DHT? 6262 
One-stage DHTs 6261 
One other thing 6261 
One stage 6261 
Brewing, thinking and heating 6261 
Physical characteristics of electronic devices 6261 
I see the things differently. 6261 
Don't waste time being "creative" 6261 
The audiophile attitude 6261 
The where and why of design choices 6261 
Blah blah blah 6261 
Laconic Clarity vs. Comfort vs. Nostalgia 6261 
Do I need to be hissing? 6261 
...associated with lack of neutrality and colorati... 6261 
John Broskie's Partial feedback amplifier 6261 
Randomness vs. freedom and the Homework # 4334 6260 
What is randomness? 6260 
Those least three possibilities… 6260 
Randomness and Music's Prerogative 6260 
It works, … sort of. The revolution is canceled. 6260 
Thorsten Loesch’s article about DHT SETs 6258 
A Beautiful Mind 6257 
Some summary and conclusions from the first phase. 6255 
Second phase: revising requirement for my DHT objectives. 6240 
Tubes for your DHT amp 6240 
Abandoning Milq? 6240 
Will see how it goes.... 6240 
Single-stage Milq vs. Sun Audio VT-2A3 6238 
Topology and 2A3? 6238 
6SN7-2A3 amps? 6238 
Type Casting 6238 
Sun Audio SV-2A3 6238 
6sn7-2a3 6238 
Topology vs parts 6238 
For a DHT amp, you are listening to the power supply 6238 
The vintage tubes syndrome. 6238 
Parts Frenzy 6238 
Too many new sounds 6238 
Milq-Sun-Audio amp, ordinary Sound, 2A3 tubes 6237 
New tubes 6236 
Milq bias vs. batery bias 6236 
The batteries are a tricky thing. 6236 
Swimming the ocean at night? 6236 
New 2A3 6236 
To kill of do not kill the capacitor. 6235 
The JJ Electronic amp. 6234 
JJ 2A3 and amp 6234 
Czech tubes 6232 
Single plated vs Double plated? 6232 
Mono plate 2A3 tubes 6232 
I suggested once VT52 tube 6231 
The 800R vs. 1800R vs. 5500R 6231 
YO-186 as the output tube. 6228 
Here she is. 6227 
Some talks about the new production tubes 6223 
New 2A3 tubes 6223 
Some thoughts about one-IHT vs. multiple-DHT 6223 
The Sun Audio with 6E5P 6222 
Multistage DHT circuits 6221 
Wrong tube or wrong topology – here is the question. 6220 
Emission Labs 2A3 6220 
Some comment and questions about then 2A3 talks. 6220 
Which Chinese 2A3? 6220 
OK, for a first time I like the San Audio Kit. 6220 
The YO186 Strip Show 6220 
More on the 2A3 comparisons 6219 
It will be interesting…. 6219 
OPT impedence 6219 
More about the Plate Loading 6219 
Some feedback on designing with the 45 and 2A3 DHTs... might prove interesting. 6214 
2A3 data 6214 
The New 2A3 tubes 6214 
How many stages I need for 110dB sensitivity, smal... 6214 
How many stages and why... and who makes that 45 o... 6213 
Everything about everything. 6213 
Some very good points... and... possibly more logi... 6213 
Options, options, options.... 6213 
I think we agree overall 6213 
An IDHT with more gain? 6212 
You don't ask for much now, eh? 6212 
2A3 tube impressions 6207 
Interesting analogy 6207 
NOS 2A3 tubes versus new tubes 6207 
Hmmm, let me try this one again... 6207 
Sylvania 2A3 identification 6207 
A picture is worth a thousand micromhos? 6207 
I have more interest in the period tubes 6207 
Why NOS tubes? 6206 
The Holly Ignorance 6206 
Tube tasting 6206 
The cathodes’ flatulence? 6206 
Make mine thoriated please 6206 
Any Germans out there? 6206 
6E5P VS 6E6P 6206 
Vibrations? What do you with them? 6206 
Vibration in tubes and sounds 6206 
UX4 vs UX4ruskie 6205 
Ringing the tubes? I do not know how about that. 6205 
Tube sound and vibration 6205 
The thoughts collection about YO186? 6199 
The lights look green for the YO tube 6198 
"Melquiades" with YO-186. Something like... 6198 
My version of RE-604 and PX4 6197 
The YO186 tube sockets. 6197 
B4/B5 British made 6196 
The YO186’s sockets and prices 6196 
DHT 2A3 amplifier rectification 6195 
My attitude toward tube rectification. 6195 
Tu-be or not Tu-be, seems Tu-be the question. 6194 
It looks like DHT DSET is shaping up. 6193 
The Sylvania 2A3 NOS report 6190 
The Citizen Kane syndrome. 6190 
Sylvania 2A3 in a World without Color 6189 
Are NOS and new manufacture comparing oranges to o... 6189 
That all is incorrect in a way…. 6189 
NOS vs new 2A3 tubes 6189 
The identical operation environment? 6189 
Preferred 2A3 operating point 6189 
The sound of the 2A3 however? 6189 
Circuit modification for 2A3 optimization 6188 
How to get max power from 2A3 6188 
2A3 voltages, loads and realized output power 6188 
Optimal operation of 2A3: an experiment 6188 
Tubes, Whole Circuits, Expectations and Sound 6188 
Gain is not power. 6188 
2A3 amplifier modification & Optimization 6188 
Specialized DSET approach 6188 
6C33/2A3 DSET? 6188 
SET usable power and making the most of it 6188 
The 2A3 loading 6188 
DSET solution for EdgarHorn? 6188 
Optimizing the 2A3 6188 
How much to DSET a DSET 6188 
DSET for Titan 6188 
The Best of All Worlds 6188 
Multiamp setup 6187 
Optimizing the (NOS) 2A3... "KM-style"? 6187 
There are many opportunities, it all depends what ... 6187 
Modifying amplifer to optimize NOS 2A3 performance 6187 
Conceptualizing Melquiades DSET is done 6181 
2A3 and 400V supply 6181 
Pudding and the chicken wires 6180 
Another shot at numbers 6180 
How to cook the "uninformed" anode. 6180 
Okay, so this might work.... 6180 
The DHT Milq DSET, the prebuilt draft. 6180 
Looks good, but.... 6179 
2A3 with slightly lover filament voltage? 6179 
Less is more... usually. 6179 
Where to burn gain? how? and where to get beter st... 6178 
Stepping Out 6178 
Said to be good, but 6178 
Gain to lose 6178 
Why nothing is simple with this damn amp! 6178 
Another idea for losing gain 6178 
What's best 6178 
Options, options... 6178 
Actually, it is not so bad. 6178 
Other compromises... 6177 
Cathode vs. fixed with DHT 6176 
Is it glowing yet? 6156 
It is comming.... 6156 
The new MF channel. 6150 
I started to work on the Milq’s DHT Island. 6149 
Innerstage loading vs. OPT loading. 6141 
The intestage loading talk. 6138 
My playback feels like it is broken. 6133 
1 in 50? 6133 
Yes, it was after PP2000 6133 
Die Walküre soldering. 6132 
The post Die Walküre soldering 6131 
Another amp arond YO186 6130 
Gain? 6130 
The Unexpected problem with DHT Milq. 6130 
Simple is good 6129 
Ok, I am moving forward. 6129 
The Milq DSET is up. 6128 
My DH DSET – 2 days later. 6126 
Here is more data to reconcile. 6126 
Hm, that is interesting and unpleasant so far. 6125 
Ok, what do I want? 6125 
Let Go of Some Conceptual "Restrictions"? 6125 
The Milq DH DSET, the further thoughts in progress. 6125 
Crunching Numbers; Shaping Sound 6125 
How about the tweeter? 6124 
Tweeter Efficiency? 6124 
Safe and Sound 6124 
More mystery with tweeter but still on the subject. 6124 
Some clarifications. 6124 
How about that?!!! 6124 
Further considerations: DC-coupling. 6122 
Head Room 6122 
To kill the mandatory 13dB 6121 
DC coupling and killing 13db and driving 6e5p miller and.... 6121 
I do not think that it might be damaging… 6121 
Again with the PS 6121 
AKA J.C. Morrison’s amp but… 6119 
Parallel Universe 6119 
Melquiades HD MF DSET, Draft13. 6117 
Why I let other people build them... 6117 
Ok, it's going to right direction. 6117 
Ok, it looks already very close…. 6116 
The Loftinish-Whitish, well sort of…. 6113 
MF: the pre-final version. 6113 
Loftin-White? 6113 
Did anyone hear the PX4 amplifiers? 6113 
What Could use Improving at This Point? 6113 
The Milq’s MF front-end is done 6109 
Why I Let Other People Build Them, II 6109 
Define really quiet 6108 
Another variable of sound 6108 
Backlash? 6108 
Alternative filament supplies 6108 
I kind of faced a problem with AC 6108 
Going down the DC path 6107 
It is not about the “whole sound” but about “molec... 6107 
Molecular sound 6107 
AC-DC heater supply 6107 
The Tentlabs are $10 worth PS. 6107 
The unexpected resolution of AC vs. DC quandary. 6107 
The devil is less scared than it depicted. 6107 
Hiss or Hum 6107 
AC transformers 6107 
I have seen the Promised Land 6106 
OK, the choke noise is not a problem anymore 6106 
Ok, it is working fine but… 6105 
Divide and Conquer 6105 
The design phase is over. 6104 
The unexpected insanity! 6103 
Loading 6103 
Looking for inspiring ideas for 'universal' loadin... 6103 
A filaments Sherlock Holmes wanted. 6103 
Going the Distance 6103 
Read the f*** manual! 6103 
Agreed. 6103 
I agree 6103 
The filament transformer 6103 
Center-tap and options 6103 
Something like this…. 6103 
Avoiding "Dial-an-Amp" 6103 
The foreplay is going on. 6103 
Split balance 6102 
Further thoughts about my DH filaments 6102 
The Shuguang 2A3 tubes. 6102 
SHuguang 6102 
Going through…. 6101 
The 2.5V noise vs. 4V noise. 6100 
More about Shuguang 2A3C 6100 
Hum vs voltage 6100 
Meow about the tubes… 6100 
To Be a Content Cat 6100 
Completed! 6097 
Tradition 6097 
Absolutely beautiful! 6097 
The 'film' caps in PS 6096 
Science or religion 6096 
Mass Extinction 6096 
Electrolytics, technology and time 6096 
No more questions about PS capacitors. 6096 
Capacitor choices 6096 
Good time. Welcome back. Thanks God. 6095 
The minor day of Quartets. 6095 
Them's the Breaks 6095 
Eventually! 6094 
So Soon? 6094 
DHT MF channel and 6-ch amp: first conclusions 6094 
All Abuzz about Nothing 6093 
The wire for DC-coupling 6093 
The Dirt on DIY Backlash 6093 
DSET vs. the “better tubes”. 6093 
How to test the DH tubes properly? 6092 
Pairing up tubes for SE use 6091 
The DHT live reserve 6090 
Some interestng models 6090 
Eaten alive. 6090 
The tubey déjà vu? 6089 
The new concept of my output transformer. 6085 
The 4V takes a lead. 6081 
Listening the DH and the striped down version of M... 6078 
I kind of slowly learn what I need. 6078 
More HF from a transformer and DHT? 6076 
Since You Don't Need the Gain 6075 
Exiting the design mode? 6075 
Bye-bye the input divider on MF! 6075 
A few steps back and a gaint leap ahead. 6071 
Single-stage vs. DHT amp. 6070 
Setting up the new Playback 6069 
And the winner is… so far 6066 
If you like type 45... 6066 
Type 45... they're not all the same 6066 
Favorite Flavor? 6066 
The 45 times Meow... 6066 
The problem that I see is… 6066 
Running the 45 6066 
The 10Y...and bye bye Newton 6065 
The commentaries about everything. 6065 
Driver tube and biasing 6065 
DHT drivers 6065 
The ideas are worth trying? 6065 
A question about the polishing the things…. 6061 
The Particular Tube, I'm afraid... 6061 
Driving the 45... cathode first 6060 
ST or Globe; old or new... 6060 
Whatever sticks to the wall as an operation point ... 6060 
The attenuating crap in secondary. 6060 
Operating points and cathode current 6060 
The Burgeoning Opportunities! 6060 
Actually it is not so simple. 6060 
Resistors at the front 6059 
A minor alternation of a position 6059 
The era of enlightenment. 6056 
The devil is in the details.... 6056 
Constructing Sound 6056 
A new view on the DHT evaluation. 6055 
The “strange” YO186 6046 
The dead guy’s lessons. 6001 
2S4S and 2A3 5992 
Ho to use the YO186 5985 
YO 186 fundamental flavor 5985 
The YO-YO tube and "fundamentals" channel 5985 
The live without the YO186, again.... 5983 
Not anymore! 5972 
The very good YoYonisation! 5971 
….above and below two very clean channel. 5970 
The DHT and esoteric imaging deformation. 5957 
DHT, YO186, or??? 5957 
I had no idea how ‘different’ it is. 5904 
The Kazitsky Manufacturing and YO104, some history. 5903 
"Absolution and Eternal Refuge." 5900 
Sofia Electric Type 45 Mesh 5890 
The true association of YO186's Sounds. 5652 
All the Best from Burgundy 5652 
Cheesy tubes 5651 
Me and my DHT references… 5542 
Y0-186 in winter. 5445 
Y0-186 sounds like… 5444 
Rethinking the YO186 tube. 5413 
In My Dreams 5413 
Grunt from type 45? A ridicules comment. 5413 
Blame? 5412 
When good is not good enough. 5412 
45s, Drivers, and 45s 5412 
Hm, that was so simple after all! 5411 
How the YO186 was used. 4995 
What is old is new? 4994 
YO186 vs. type 45. 4993 
The YO186 is gone.... :-( 4542 
That sucks. 4542 
YO186 4540 
Hm, what the hell is going on? 4540 
I do not think that anybody but me would like YO186 4540 
A hallucination? 4537 
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