I made these improvements to my Musical Fidelity A1:
http://ignatiusprojects.blogspot.com/
¿do you now where to find the OPA4134 in dip14 format?
I removed the existing TL084CN and installed a dip14 socket to prove other opamps. Is there any other dip14 opamp to improve the sound of TL084CN.
Thanks
http://ignatiusprojects.blogspot.com/
¿do you now where to find the OPA4134 in dip14 format?
I removed the existing TL084CN and installed a dip14 socket to prove other opamps. Is there any other dip14 opamp to improve the sound of TL084CN.
Thanks
Bonsai said:I didn't think it would b e possible to improve the A1.
Probably true. But it's possible to dissipate heat better. Due to the heat produced the caps where suspiciously inflated and the pot was broken. The minimum changes to do are to remove the heatsink, install a better one with a fan and change the 10000uf cads and the Alps pot. See my photos:
http://ignatiusprojects.blogspot.com/
@juluska
you're wasting time with some of these "improvements" .
go HERE and read what's problem with preamp stage itself .
you can do same as M. Hennessy , or you can look at this post in our local Serbian forum and make this line stage :
you're wasting time with some of these "improvements" .
go HERE and read what's problem with preamp stage itself .
you can do same as M. Hennessy , or you can look at this post in our local Serbian forum and make this line stage :
An externally hosted image should be here but it was not working when we last tested it.
juluska-san,
I have had some opamps rolled on my MF A200, which is equipped with similar pre stage as MF A1.
TL074/084 ... Original. Warm, masked.
AD8620x2 ... Clearly audible improvement on resolution
OPA627x4 ... Significant improvement, still keeping MF's sound
TLE2074 ... Slight improvement on resolution
OPA4227 ... Dull. Maybe worse than TL074
TLE2144 ... Significant improvement, with colder sound tone
Last three newer 4ch opamps were my quite recent trials, and I found TLE2144 is quite impressive. Sound is full of details with somewhat cold sound tone, while OPA627 gave hotter sound.
LM49740 can be another option, though, I skipped it because I do not like the sound of LM49720 in my diy headphone amplifier.
You can find TLE2144 in Digikey at very reasonable price.
Good luck!
P.S.
Some pictures in my site;
http://d.hatena.ne.jp/web123/20090626
I have had some opamps rolled on my MF A200, which is equipped with similar pre stage as MF A1.
TL074/084 ... Original. Warm, masked.
AD8620x2 ... Clearly audible improvement on resolution
OPA627x4 ... Significant improvement, still keeping MF's sound
TLE2074 ... Slight improvement on resolution
OPA4227 ... Dull. Maybe worse than TL074
TLE2144 ... Significant improvement, with colder sound tone
Last three newer 4ch opamps were my quite recent trials, and I found TLE2144 is quite impressive. Sound is full of details with somewhat cold sound tone, while OPA627 gave hotter sound.
LM49740 can be another option, though, I skipped it because I do not like the sound of LM49720 in my diy headphone amplifier.
You can find TLE2144 in Digikey at very reasonable price.
Good luck!
P.S.
Some pictures in my site;
http://d.hatena.ne.jp/web123/20090626
Senshu San....please, inform the brand name your people respect as high quality
Say...audiophiles.... i am watching you with the A1, and i know how the A1 sounds... this way i feel myself interested to know the ones Japanese values.
I have worked for Sony, and i respect a lot your people, and the value of your opinion is strong in my mind.
Also, i would like to ask you the one is better between those chips i have here:
OPA2134
OPA1632
LM49860
LM4562
INA134
DRV134
Write to panzertoo@yahoo.com
Sayonara
Carlos
Say...audiophiles.... i am watching you with the A1, and i know how the A1 sounds... this way i feel myself interested to know the ones Japanese values.
I have worked for Sony, and i respect a lot your people, and the value of your opinion is strong in my mind.
Also, i would like to ask you the one is better between those chips i have here:
OPA2134
OPA1632
LM49860
LM4562
INA134
DRV134
Write to panzertoo@yahoo.com
Sayonara
Carlos
senshu said:juluska-san,
I have had some opamps rolled on my MF A200, which is equipped with similar pre stage as MF A1.
TL074/084 ... Original. Warm, masked.
AD8620x2 ... Clearly audible improvement on resolution
OPA627x4 ... Significant improvement, still keeping MF's sound
TLE2074 ... Slight improvement on resolution
OPA4227 ... Dull. Maybe worse than TL074
TLE2144 ... Significant improvement, with colder sound tone
Last three newer 4ch opamps were my quite recent trials, and I found TLE2144 is quite impressive. Sound is full of details with somewhat cold sound tone, while OPA627 gave hotter sound.
LM49740 can be another option, though, I skipped it because I do not like the sound of LM49720 in my diy headphone amplifier.
You can find TLE2144 in Digikey at very reasonable price.
Good luck!
P.S.
Some pictures in my site;
http://d.hatena.ne.jp/web123/20090626
Thanks, i will include the TLE2144 in my next digikey order.
Hello
The first time I did listening to a Musical Fidelity amp was about 9 years ago, I did eard the Musical Fidelity Nu Vista M3 integrate amp, with Monitor Audio loudspeakers, it was a superb musical experience, my first commercial amp listening session who was really musical.
I would be very currious to see the schematic of the Musical Fidelity Nu Vista M3 but I did not see any on the web.
Thank
Bye
Gaetan
The first time I did listening to a Musical Fidelity amp was about 9 years ago, I did eard the Musical Fidelity Nu Vista M3 integrate amp, with Monitor Audio loudspeakers, it was a superb musical experience, my first commercial amp listening session who was really musical.
I would be very currious to see the schematic of the Musical Fidelity Nu Vista M3 but I did not see any on the web.
Thank
Bye
Gaetan
Attachments
Re: Senshu San....please, inform the brand name your people respect as high quality
Hello Carlos
The LM4562 are the best in those one.
Bye
Gaetan
destroyer X said:
Also, i would like to ask you the one is better between those chips i have here:
OPA2134
OPA1632
LM49860
LM4562
INA134
DRV134
Write to panzertoo@yahoo.com
Sayonara
Carlos
Hello Carlos
The LM4562 are the best in those one.
Bye
Gaetan
Hi destroyer x -san,
I am doubtful if there is any common or special preference found among Japanese guys.
Most of guys love BB, AD or LT, not JRCs.
So, below are my personal subjective impression...
OPA2134:
Stable behavior. Somewhat normalized too much, framed?
LME49860/LM4562:
Detailed. Clean. Flat. Less swing.
Frankly speaking, I could not notice any sounding difference on LME49860 or LM4562, against LME49720.
I've never experienced OPA1632, INA134 nor DRV134, except I found INA134 in Linn's IKEMI, together with many OPA604s.
And yes, surely circuit topology affects the rating of opamps.
TLE2144 is bloody decent in MF A200, but it turns into one of many boring chips in my diy A47 3ch headphone amplifier.
I am doubtful if there is any common or special preference found among Japanese guys.
Most of guys love BB, AD or LT, not JRCs.
So, below are my personal subjective impression...
OPA2134:
Stable behavior. Somewhat normalized too much, framed?
LME49860/LM4562:
Detailed. Clean. Flat. Less swing.
Frankly speaking, I could not notice any sounding difference on LME49860 or LM4562, against LME49720.
I've never experienced OPA1632, INA134 nor DRV134, except I found INA134 in Linn's IKEMI, together with many OPA604s.
And yes, surely circuit topology affects the rating of opamps.
TLE2144 is bloody decent in MF A200, but it turns into one of many boring chips in my diy A47 3ch headphone amplifier.
There are very good advices and photo sessions in your local Serbian forum:
www.HiFi-Forumi.com • Pogledaj temu - MF A1 David
unfortunately the losses by translate about google are still to large:
Google Nachricht
http://translate.google.de/translat...m/forum/viewtopic.php?f=18&t=7658&hilit=david
independend from the target language I choice
Last edited:
There are very good advices and photo sessions in your local Serbian forum:
www.HiFi-Forumi.com • Pogledaj temu - MF A1 David
unfortunately the losses by translate about google are still to large:
Google Nachricht
Google Nachricht
independend from the target language I choice
Impressive work. Thanks
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