Is The Op Amp REALLY Important In Overdrive Pedal Tone? Testing The JRC4558 TL072 5532 1458 OPA2604

[@arito]

(almost) EVERY 4558 ever made! kzbin.info/www/bejne/pGSTXpuid7B0j6c More Shootout Videos: kzbin.info/aero/PLuGyFi1zEmqbyeXcyZgBuAb3NBJP4mzTH

[@dindin3394]

Great video and sound! Thank you very much! You did what many of us want to do but don't have the capacity. I found your video while I was performing a surgery to my cheap TS clone and was thinking to change the op-amp with a RC4558 coming out from an old valvestate marshall amp or some cheap TL072 I have in my hands. I loved the part in your older video where you test the op-amp that you removed from the car's aircondition!

[@arito]

Thank you so much for the kind compliments! I really appreciate it! I don't know if you saw my video about salvaging chips from thrift store electronics, but I've accumulated many 4558 variants and am finally planning to make a "strictly 4558" shootout real soon!

[@dindin3394]

@@arito This is great! I will wait to watch that! I just installed a good but fake TL072 to my cheap DemonFX tubescreamer and it sounds much smoother! (just for the record lol) the funny thing is that I tried also a 4558 from an old marshall valvestate amp and it was sounding much better than the one that the pedal had from the factory..

[@arito]

@@dindin3394 Sounds like you're having a lot of fun experimenting with op amps! I think that's the great part about tone chasing, there is no end or right answer!

[@Bob.Silverstein]

interestingly, i thought the differences were slightly more noticeable on single coil pickups than on the humbucker.

[@arito]

Thanks for watching! And thank you for sharing your impressions with us!

[@ChadIattoni]

Really dig the character and extra "fizz" of the TA 75358. Kinda want to pick some up and see how well they perform in a modern high gain setting.

[@arito]

Thanks for watching! Yes, the fizz of the 75358 works great in a high gain distortion circuit, please check out my RAT op amp shootout!

[@antiwebbite]

Theoretically the sounds should be extremely similar (and they are) because you have clipping diodes in the feedback loop. I'd love to see the same test but without the diodes, that way we can hear the op amps themselves clipping!

[@arito]

Thanks for watching! I definitely agree, and actually, there are no clipping diodes in the circuit! I'm guessing you probably skipped through the intro talk and just looked at the schematic, but I mention around the 2:17 mark that I have removed the clipping diodes so that we can hear just the op amps clipping. Also, if you look at the breadboard up top while I'm talking, you can see that there are no diodes in the circuit. Hope this helps!

[@antiwebbite]

@@arito what a dork I am! Thanks!

[@arito]

@@antiwebbite Absolutely no problem! I hope you enjoy the comparison! Thanks again!

[@porkachop2001]

I really enjoy the sound of the OPA chip, its the only one I feel has a different time/personality

[@arito]

Thanks for watching! And thank you for sharing your impression! Yes, the OPA2604 is a really popular chip!

[@MCDbits]

Amazing comparison, real fizz from the JRC 4562

[@arito]

Thank you! Great to hear you enjoyed the comparison! The JRC4562 is definitely an interesting op amp, I can't seem to find much information on it, so it remains somewhat of a mystery.

[@stevenyjtsai]

awesome, thank you

[@arito]

Thanks for watching! Thank you for the kind words, I hope you enjoyed the video!

[@t.c.494]

I love the midrange rip of the JRC 4558. It has an airiness. I like an overdrive to sound much like a roar, with a flapping to it for lack of a better word, like someone yelling. The more like a voice it is, the more one can talk, the vocabulary opens up through the pronunciation.

[@arito]

I just noticed this comment, thanks for sharing your thoughts on overdrive tones! Reading all the diverse comments on everyone's preferences is really interesting and fascinating!

[@FETeching]

They are extremely similar. I thought the CA3260 had some nice low mids. Some sounded slightly honkier, others slightly less. You could hear difference in the high end on certain clips. But even the differences changed clip to clip, guitar to guitar. They were too subtle to feel consistent, which I think means they're too similar to tell apart in a meaningful way. That said, you do have to make a choice when buying op amps to put in your pedals, and this helps a lot. Thanks. The TA75358 was fun to see again.

[@arito]

Hi G M, thanks for watching! Great analysis! I totally agree, the overall difference was very subtle, the tonal response and the breakup/fizz seemed to change and vary from loop to loop, making it difficult to pinpoint a specific character to any of the op amps.

[@gstube1]

Very close to me. I think short loops would help to compare them more easily, IMO. Just one chord strum on each maybe? By the end of each loop, I started second guessing myself as to my initial reaction to the tone. But that's another story 😂. Great job though and thanks for your hard work 👍

[@arito]

Thanks for watching! And thank you for the kind words! Yes, I initially had plans to make shorter loops like I did with the germanium diode shootout, but didn't want to make the loops too "research lab-like." But, I think I might take your advice and make a KZbin Shorts video editing out just the first chord strum from the loop. 😄

[@PATRIK67KALLBACK]

Wow, they sound so like each other. The one that I think have a little more low end and sounds a bit more rich is the TA 75358.

[@arito]

Hi PATRIK, thanks for watching! Yes, the TA75358 has a unique compression and breakup, plus a slightly darker tone lacking in high end, which as you've pointed out makes it sound a little more fuller and richer. 😃

[@velvetsound]

Where do you get TA 75358’s from? I liked that one, but Mouser didn’t carry it.

[@arito]

@@velvetsound Thanks for watching! The TA75358 is unfortunately discontinued. Over here in Japan it can still be found occasionally. But, you could use most any "358" type op amp, the LM358 being the most available, and get very similar results. Good luck!

[@alssilva8496]

Todos diferentes

[@arito]

@@alssilva8496 Thanks for watching!

[@u.s.a.198]

Your videos are absolutely terriffic... I have thought about doing many of the things you have done... Thank you!

[@arito]

Thank you so much for the kind compliments! I really appreciate it! Great to hear you enjoy the videos!

[@elvisalivetone]

Nice comparison, differences are really huge 😉😜

[@arito]

Hi, thanks for watching! LOL, yes, the differences are ginormous! 😁🤣

[@hombresdecromo]

Good video, congrulations🎉 the Best Chanel.

[@arito]

Thanks for watching! Thank you so much for the kind comment! I really appreciate it.

[@sidahmed8837]

Ohayo gozaimasu Arito-San! Big fan of your channel, although I ain't in no way an electronics engineer. I like the highly educational content of your channel. Your shoot outs are thorough and make a lot of sense! I'd like to ask you a question, if you don't mind : Can changing an op amp on a pedal damage the latter? Thank you in advance.

[@arito]

Hi Sid-san, ohayo! Thanks for checking out my videos! To answer your question, changing the op amp will not damage a pedal. Although I can never say never, 99% of the time, you're pedal will be fine. Of course that is not counting any damage that can be caused when you're soldering/desoldering the op amp. If you are going to swap op amps, I would recommend placing an "8 pin DIP socket" after you've removed the stock op amp. That way, you can swap op amps without hassle. Hope this helps!

[@sidahmed8837]

@@arito Arigato gozaimashita Arito-San for taking the time to answer. That's really nice of you. And Yes, Fortunately for me, the pedals I have are equipped with 8 pin DIP sockets, and I tried swapping the op amps and it was very interesting, unfortunately, I didn't pay attention to the orientation of one of the and now it's no longer functional, I hope it's just a resistor that short circuited, this is the price of learning, I guess! Keep rocking! Gambatte kudasai!

[@arito]

@@sidahmed8837 Is it the pedal that is no longer functioning, or the op amp? Is it just a regular overdrive operating at 9 volts? Placing an op amp in the opposite direction, might fry the op amp, but I don't think would damage the pedal. Although, I'm guessing you tried a different op amp in the same circuit. If it is in fact the pedal that's gone, I don't think it would be a resistor, but maybe an electrolytic capacitor, most likely relating to the power supply.

[@sidahmed8837]

@@arito First, I'd like to say that I genuinely appreciate the time you're taking to answer, so, Thank you very much. It is a BEOD clone with 3 TL072CP's ( Tayda components mostly). I said resistor because it smelled like burnt components around the input ( a resistor (brown, black, black , gold and yellow) and a diode (marked N ,black with a silver stripe on top). Hopefully, there should be someone who knows electronics where I live who can help. P.S : You've made me like the TS9. Haha. You're awesome. Greeting from Algeria!

[@arito]

@@sidahmed8837 ​ @Sid Ahmed No problem, Sid! I know what it feels like when you accidentally ruin something... Done it many times🤣 Did a quick search for a BE-OD schematic, looks like they use 1/2 of a TL072 in the power supply. It's used as a buffer for the reference voltage, somewhat of a rare "boutique" way to use an op amp. Anyway, I'm guessing that the 072 you accidentally placed backwards was this one. And if that was the case, the resistor you mentioned, which should be a 10 ohm(brown, black, black, gold, (should be)BROWN) resistor, right at the input of the power supply, next to the diode on the schematic, will get fried because it will be passing way more current than it can handle. A quick fix, just replace the resistor. A "1/4 Watt" rated 10 ohm resistor is all you need. But, if you're not comfortable with soldering, and just want to use the pedal, you can connect two wires across the fried resistor and "jumper" that resistor. I won't harm your pedal, that resistor is there to "clean up" the power supply of any noise, and also to act as sort of a "fuse" to go up in smoke and protect the rest of the circuit, just as you have experienced.😉 So, if you do jumper that resistor, be extra careful to not to do it again! Hope this helps, good luck! Algeria! WOW! Never thought I would be talking about op amps and guitar pedals with another enthusiast from Algeria! Thanks so much for checking out my channel!

[@kapitechnologysrilanka4280]

The Fraud of the electronic world.. Good luck!!!! your experiment is awesome.

[@arito]

Thanks so much for watching!! Great to hear you enjoyed the video!

[@ScottyBrockway]

I need to listen with a new pair of headphones, mine lack high end. There seems some fizz in some and other have slightly more even response and a tad lower gain.

[@arito]

Hi Scott, thanks for watching! Yes, I think so too. I listened to the sound clips over and over again as I was editing, and as you've mentioned, there seem to be subtle differences in fizz/tone response and gain among the op amps.

[@nhutnguyen7880]

Anh cho em hỏi TL072 có hay không

[@arito]

Hi, thanks for watching! Google translate gave me this: "Can I ask if the TL072 is available or not?" If you are asking if the TL072 is discontinued or not, it is still in production and readily available from most electronic parts suppliers. Hope this helps!

[@koonsickgreen6272]

all i can tell is less gainy more gainy

[@arito]

Thanks for watching! And thank you for sharing your impressions with us!

[@t.c.494]

Good channel, good channel.

[@arito]

Thanks! There's also a short edit version of this same shootout if you like the shorter loops!

[@t.c.494]

@@arito Rad, thanks!

[@roccogreco21]

Jrc4558dv e Jrc4558dx?

[@arito]

Thanks for watching! Check out my video comparing 4558 op amps! I don't have the DV or DX, but there are 14 variants! Link is at the top of the comments.