Posting these here for easy reference..
[Experience] A brief introduction to AT-BHA100 tube replacement (ECC83 Big Golden Lion Golden Feet)
Original post
First note
AT-BHA100 is much harder to pull out than AT-HA22 TUBE
If you have no experience, it is best to find an experienced store to do the work.
Otherwise it would be funny if you use your strength to produce miracles
Picture first
The tubes are paired
Genalex(GEC) gold pins Gold Lion ECC83
Original disassembly photo
Big golden lion in charge
Big golden lion on-camera photo
Tools required for pipe replacement:
A T9 hexagonal screwdriver and a small slotted screwdriver
Pulling method:
Use a flat-head screwdriver to slowly apply downward pressure on the red circle. Hold the base with your other hand and
slowly lift it up. Stand up on one side and switch to the other side.
Although there is a fixed base underneath, it would be funny if it flew out
So pull it out slowly
As for the listening experience, I just changed it last night and have a look.
First, warm it up for an hour as soon as you turn it on and then listen to it.
When I first turned on the sound, the bottom of the sound still sounded like the original tube (you read that right, the sound was very similar to the one I bought on the first day it was released)
The background is darker than the original tube, the control is better than the original tube, and the dynamic contrast is obviously better than the original tube.
But I can’t let go of my voice (I started talking nonsense)
After 10 hours, the treble part slowly comes out
But if the sound changes very quickly, it obviously needs to be run again (at least 200 hours or more).
In conclusion, the tube I changed this time has been a huge improvement for me.
Especially for the part where the ATH-AWAS treble cannot be played.
Finally, the retired AT-HA22 TUBE and tube
The order of the tubes is original tube>JJ gold feet>Tesla E88CC gold feet>Valvo ECC88 ((logo is Mullard shield)
Finally, the system + headset photo
The system is Teac UD-301+AT-BHA100 (DA will probably be replaced by Soekris dac2541/1541 in the future)
The headphones are ATH-AWAS+AD1000X
above
[Experience] The fever reduction system is completed: AWAS+AT-B1XA+ UD505 (+ Taste No. 1 Line) + AT-BHA100 (Telefunken ECC83)
Original Post
First go to the system +AT-BHA100 and change the Telefunken ECC83 photo
Please refer to the tube replacement method:
[Experience] A brief introduction to AT-BHA100 tube replacement (ECC83 Big Golden Lion Golden Feet)
And
RE [Experience] Audio-Technica AT-BHA100 listening
Foreword:
In fact, the earliest upgrade plan was to upgrade the headset + system in January last year.
But plans can never keep up with changes
The original budget of 50K for the upgrade ended up being 150K (reversed)
The final system setting is:
Wall plug/row plug: Furutech FP-2R-20A+European standard cover+OH-T8B IV
PC> UD505 (+ Taste Line 1)> Balance>AT-BHA100 (Telefunken ECC83)>AWAS+AT-B1XA
Among them, UD505 is the earliest plan, but it is not the final and most important goal.
The original main target was DAC2541/1541
But due to shortage, it will not arrive until the end of February and production is discontinued.
Finally, after comparing UD505 and Chord Hugo 2 AB, I chose UD505+ Taste No. 1 Line
As for the sound performance of UD505, there are many opinions on the Internet, so I won’t go into details.
Only description for changing the taste of the No. 1 power cord.
The biggest change after connecting the power cord is that the sound field is larger, the outline is clearer, and the bass performance is better.
It can be said that the original one has nothing to do with it.
But it is not without its shortcomings. The original high-frequency overtones are much weaker.
Then compare AWAS+AT-B1XA/3.0 with the original balance line
Improved the sense of inconsistency between the original AWAS mid-frequency and high-frequency connections and the quality of the chassis.
In addition, the sound field and acoustics have been improved to a higher level, and the overall trend is towards Hi-Fi headphones.
Whether this change is good or not depends on the type of headphones one chooses.
Is the vocal used specifically for martial arts or for general use?
Then I put AT-BHA100+Telefunken ECC83 last because the changes are so different.
After replacing it with Telefunken, it was a complete transformation. It can be said that there is no shadow of the original at all.
The original AWAS single-ended + BHA100 original tube is a very warm and enveloping vocal weapon.
But after going to Telefunken, I first felt the extremely high frequency overtones.
The sound is crisp and clear, with excellent metal and string instruments, not much bass but excellent quality
The vocals are not close to the ears but are dense enough with a slight coloration, and the layers of the instruments are very obvious.
After 50 hours: the sound is noticeably softer and slightly warmer
Not quite like the sharper high frequencies when the sound is turned on
But it’s not without its shortcomings
The disadvantage is that flaws in song recording are easy to spot.
What's funny is that I can actually hear the layers of the songs recorded in "Light Pillar"
Then some songs will be full of dissonance (laughing)
Finally add a photo of AWAS+AT-B1XA/3.0
