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15th November 2005, 02:46 PM
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#1 |
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Banned
Join Date: Nov 2005
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JRC4558, worst op amp EVER....
OK OK I know a lot of people swear by them but in every application I have used them in, they sound and perform like garbage.
The point of this thread is, I don't get why people swear by them... Scratchy, harsh, NOISEY, overly midrangey and they just severely lack detail. When comparing them to the NE5532, OPA2228 and OPA2604, the 4558 IMO is absolutely put to shame. Those chips have closer specs to a 12AX7 tube and also sound/perform sooooo much better. When I play arpeggios through a circuit containing a 4558, there is such a lack of detail and raspiness that it would be embarrassing in a live performance. Can anyone possibly tell me why they like these chips so much? My only thought is it teams up with tube amps better than the superior chips I mentioned... |
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15th November 2005, 05:23 PM
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#2 |
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diyAudio Member
Join Date: Nov 2004
Location: USA
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A Telefunken 12AX7 sounds much better than a 4558 op-amp IMHO.
Seriously, whenever I rip open a CD player and find a 4558 in the signal path I sigh in relief because I know replacing it with any modern op-amp will provice a huge improvement to the sound.
__________________
Drew |
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15th November 2005, 06:11 PM
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#3 |
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Banned
Join Date: Nov 2005
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I'm really glad to hear this since so many people swear by them. I feel exactly the same way you do when I see one
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15th November 2005, 07:20 PM
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#4 |
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diyAudio Member
Join Date: Jul 2004
Location: Behind you.
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yeah, i'm about to rip some o' those off my soundcard. looking forward to it. cant wait to see if it helps even a bit.
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15th November 2005, 07:23 PM
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#5 | |
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diyAudio Member
Join Date: Aug 2003
Location: Santa Cruz, California
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Quote:
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15th November 2005, 08:38 PM
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#6 |
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Banned
Join Date: Nov 2005
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Does anyone know why so many people like to use them in guitar gear?
I've never really gotten an answer that made sense. |
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15th November 2005, 08:52 PM
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#7 |
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diyAudio Member
Join Date: Jun 2005
Location: Columbus, Ohio
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Ignorance is hiss.
The Restorer in OHIO
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The Restorer |
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15th November 2005, 09:15 PM
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#8 |
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diyAudio Member
Join Date: Jul 2004
Location: close to Hamburg
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usage and rating of OpAmps used in Guitar amps
is a different story, as the OpAmp in a Guitar amp might be intentionally overdriven to create distortion. Different type of OpAmp might behave different when overdriven, which creates specific sound effects. So a very good Opamp by specsheet and linear application rating might not create that specific sound distortion when overdriven. Regards, Stephan |
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15th November 2005, 09:41 PM
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#9 | |
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diyAudio Member
Join Date: Dec 2002
Location: Calgary, Alberta
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Quote:
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Aerodynamics are for people who can't build engines. Enzo Ferrari |
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