I got curious today and decided to try and see how our old friends compared against the latest and greatest (?) chip.
The chips were put into the active filter at the output of a DAC ( Zhaolu V2.5 ).
Results .
1. LM4562 -- not by a very large margin !
2. TL072 was VERY good !! Equal or better than 4562 in some respects.
3. NE5532 was VERY good in LF and midrange performance.
Voice reproduction was BEST in the NE5532 ! Unfortunately it was a bit low in the HF. Transients were still good but the HF levels seemed to be a bit rounded off.
If the NE5532 improved its HF performance it would sound the best of all these by a reasonable margin .. my opinion. Bigger margin than there was between 4562 and TL072 !
( the TL072 and NE5532 were made by TI ).
What's the best sounding TL072 and 5532 ( brand )?
Cheers.
The chips were put into the active filter at the output of a DAC ( Zhaolu V2.5 ).
Results .
1. LM4562 -- not by a very large margin !
2. TL072 was VERY good !! Equal or better than 4562 in some respects.
3. NE5532 was VERY good in LF and midrange performance.
Voice reproduction was BEST in the NE5532 ! Unfortunately it was a bit low in the HF. Transients were still good but the HF levels seemed to be a bit rounded off.
If the NE5532 improved its HF performance it would sound the best of all these by a reasonable margin .. my opinion. Bigger margin than there was between 4562 and TL072 !
( the TL072 and NE5532 were made by TI ).
What's the best sounding TL072 and 5532 ( brand )?
Cheers.
hmm.... another one discovered that implemention of a opamp is more important than some of datasheet spec's... An now try that with really compareable circuits. You're mixing a "standard" opamp (NE5532) with a JFET (TL072) and a high speed device (LM...), that's not a fair comparison without adjusting the circuit to the individual ..IMHO..
".............that's not a fair comparison ............."
Sure , I agree with that . I have already said earlier that implementation matters a lot.
Just confirms that opamp ' rolling ' doesn't really produce any reliable results.
However I was surprised at how decent the TL072 sounded and the mid-range performance of the NE5532.
Cheers.
Sure , I agree with that . I have already said earlier that implementation matters a lot.
Just confirms that opamp ' rolling ' doesn't really produce any reliable results.
However I was surprised at how decent the TL072 sounded and the mid-range performance of the NE5532.
Cheers.
The setup :
Pioneer DVD player > SPDIF digital out to Zhaolu V2.5 DAC > analog out to Creek 5350- II power amp > biwired to Mission 701 speakers on 2 foot sand filled stands . Speakers almost 2 meters from the rear wall and 1.5 meters from side walls.
The LP filter on the DAC appears to be similar to the one in the application note by Cirrus Logic for DAC filters. Resistors seem to be low value , below 10K I think. That would mean that all parts must be low impedance in that circuit.
I saw the Zhaolu filter circuit diagram somewhere on the Net.
Cheers.
Pioneer DVD player > SPDIF digital out to Zhaolu V2.5 DAC > analog out to Creek 5350- II power amp > biwired to Mission 701 speakers on 2 foot sand filled stands . Speakers almost 2 meters from the rear wall and 1.5 meters from side walls.
The LP filter on the DAC appears to be similar to the one in the application note by Cirrus Logic for DAC filters. Resistors seem to be low value , below 10K I think. That would mean that all parts must be low impedance in that circuit.
I saw the Zhaolu filter circuit diagram somewhere on the Net.
Cheers.
The NE5532 sound makes me want to do some experimentation.
It's a chip one can play around a bit ( maybe the 5534). Maybe the single version 5534 doesn't have the hf problem. Would that make it 'awesome ' ? Has anyone tried to run the output with a ccs on it ? Must try it out . I could do some experiments on my TD1541 DAC board which has single opamps on it's output !
Weissi , have you tried an AD826 ? You might find it interesting.
Cheers.
I forgot to add that the Mission 701 was converted to bi-wireable mode . The crossover was duplicated with better quality capacitors and air core inductors . The cabinet has additional stiffeners on all walls with cross pieces going from wall to wall. It improved the sound quite a bit from it's stock performance. It's not as good as a Dynaudio 52 but comes very close . It is more efficient and transients sound better ! Imaging is far better than the Dynaudio.
It's a chip one can play around a bit ( maybe the 5534). Maybe the single version 5534 doesn't have the hf problem. Would that make it 'awesome ' ? Has anyone tried to run the output with a ccs on it ? Must try it out . I could do some experiments on my TD1541 DAC board which has single opamps on it's output !
Weissi , have you tried an AD826 ? You might find it interesting.
Cheers.
I forgot to add that the Mission 701 was converted to bi-wireable mode . The crossover was duplicated with better quality capacitors and air core inductors . The cabinet has additional stiffeners on all walls with cross pieces going from wall to wall. It improved the sound quite a bit from it's stock performance. It's not as good as a Dynaudio 52 but comes very close . It is more efficient and transients sound better ! Imaging is far better than the Dynaudio.
the Ne5532 dual is unity gain stable; the NE5534 single is not.
therefore, you have the option of tailoring the compensation with the NE5534. that might be of some use to you for your application.
i have also heard that versions of NE5532 and NE5534 from different suppliers perform differently.
mlloyd1
therefore, you have the option of tailoring the compensation with the NE5534. that might be of some use to you for your application.
i have also heard that versions of NE5532 and NE5534 from different suppliers perform differently.
mlloyd1
there is really a difference with the TL072 and the NE5532 ... just today i modified my car preamp (china brand) swap the TL072 (i put them in last month ... original was LM4558) with the NE5532.
The result was superb with the NE5532. More ambience and voice were really more clearer ... and speakers used were diy speakers ... and the treble is so fine and detailed ... TL072 were simple no match compared to NE5532
The result was superb with the NE5532. More ambience and voice were really more clearer ... and speakers used were diy speakers ... and the treble is so fine and detailed ... TL072 were simple no match compared to NE5532
Sorry, this is just muddy water to me. Filters tend to be opamp sensitive and just popping them in without careful measurement and compensation is a useless exercise. It perpetuates myths and potential untruths about good opamps, bad opamps, favorite opamps and generally encourages the naive to go off on paths better left not trodden.
The 5532 was...
designed primarily as a line driver chip optimized for 600 ohm outputs. It was very popular in commercial equipment 20-30 years ago. As I recall, it was the first chip to replace discrete designs in output stages.
It probably wasn't designed to be a "super hi-fi" chip.
When it came out, you could get free samples from Signetics distributors.
designed primarily as a line driver chip optimized for 600 ohm outputs. It was very popular in commercial equipment 20-30 years ago. As I recall, it was the first chip to replace discrete designs in output stages.
It probably wasn't designed to be a "super hi-fi" chip.
When it came out, you could get free samples from Signetics distributors.
I am wondering if it's worth replacing the 5532s in my Roland VS-2480 CD with something else.
Roland vs2480 Op-amp Modification - Roland VS-2480 Tech Support Help Site
I'm looking for lower noise, as neutral & analytical as possible.
Worth a shot ?
Thanks
Roland vs2480 Op-amp Modification - Roland VS-2480 Tech Support Help Site
I'm looking for lower noise, as neutral & analytical as possible.
Worth a shot ?
Thanks
Apparently, a very good op amp is the LMH6622
Operational Amplifier (Op Amp) - High Speed Amplifier (>=50MHz) - LMH6622 - TI.com
Can that be a straight replacement for the 5532 ?
Thanks
Operational Amplifier (Op Amp) - High Speed Amplifier (>=50MHz) - LMH6622 - TI.com
Can that be a straight replacement for the 5532 ?
Thanks
Neutral and analytical is subjective.
Now, lower noise, that's something you can try to achieve.
By the way, the site you linked to claims nothing at all.
Maybe he has a reason for that
Well, it does say it is to upgrade the preamps...
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