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Goran
Double Platinum Member
Sweden
2203 Posts |
 Posted - 09/01/2009 : 09:26:26
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Does anybody know what op-amps work in a Tubescreamer?? I have bought a used clone where it is possible to change op-amps without soldering.
What �effect� will a certain op-amp have, anybody tried swapping?
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 09/01/2009 : 12:13:36
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Unfortunately, a bit of soldering is initially required. You will need to de-solder take out the original chip and put a 8-DIP socket. After that you can swap op-amp easily.
In my personal experience, swapping op-amp creates only subtle changes in tonality that are noticeable at bedroom levels but disappear in a band situation. |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 09/01/2009 : 16:32:35
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quote:
Originally posted by cctsim
Unfortunately, a bit of soldering is initially required. You will need to de-solder take out the original chip and put a 8-DIP socket. After that you can swap op-amp easily.
In my personal experience, swapping op-amp creates only subtle changes in tonality that are noticeable at bedroom levels but disappear in a band situation.
That�s OK, there is a 8-pin socket so I just have to swap & test. But I don�t know what I can use other than the ones used in Tubescreamers. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 09/01/2009 : 17:05:03
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HI Goran
What is in there now?
Most dual opamps will work ok in TubeScreamers,
unless your clone uses something non-standard.
Perhaps you might upload a picture.
If it's a 4558 or one of it's variants,
you could try a JFET type like the TL072.
Although thee is a lot of controversy if swapping opamps changes the tone enough to matter.
OF course, there are some people experimenting with "Staking" opamps,
where they solder pin for pin, one on top of the other.
Again another controversial mod for the elusive quest for better or "The Tone".
There was a thread here, & a picture along a similar topic, about 15-18 months ago.
Good luck - PM me if you get stuck.
Regards Dr. Bob  |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 09/01/2009 : 17:25:54
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| There is a you-tube video of a blind test swapping opamps. The URL is on my home computer - I'll post it tonight. |
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Scarymonsta
Bronze Member
United Kingdom
90 Posts |
Posted - 09/01/2009 : 19:51:33
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Here is one I watched - there is a great part in it that does nothing to help the stereotypical image of drummers either - highly amusing !
Good lecture though.
http://www.youtube.com/watch?v=bpTv2jAree8&feature=related
There are some other lectures as well which are also worth a look.
Hutch. |
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phostenix
Gold Member
USA
754 Posts |
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Laurie
Double Platinum Member
Canada
4854 Posts |
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phostenix
Gold Member
USA
754 Posts |
Posted - 09/02/2009 : 07:24:45
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quote:
Originally posted by Laurie
quote:
Originally posted by Scarymonsta
http://www.youtube.com/watch?v=bpTv2jAree8&feature=related
That's the one I was thinking of...
Bob's taking on the opamp myths? lol I've learned that people want to believe what they want to believe. The truth is irrelevant. I took a stock TS9 and an Analogman Silver Mod with a passive A/B switch to a couple of music shops a few years back & watched guys change their attack and pick angle as they played to convince themselves there was a huge difference between the two. The difference was subtle. You'll notice it standing in front of your amp playing solo, but you'll be hard pressed to hear it in a mix & your audience will never notice it (nor care). |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 09/02/2009 : 17:57:09
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The pedal in question is a Biyang OD-8, got it really cheap. It sounds just as good as any "normal" Tubescreamer.
In it is a JRC4558D, I also got a TL072 and a NE5532 but have not tried them yet.
The nice thing about this pedal is that there is an extra "battery compartment", when you open the lid the op-amp is there, very easy to change. |
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DasBeef
Gold Member
United Kingdom
704 Posts |
Posted - 09/02/2009 : 19:34:23
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I'll have to have a look at my biyang collection.
I currently have the DS-7 (distortion), and the FZ-7 (fuzz) and I have a DS-8 (Mouse distortion) winging it's way to me in the post. I'll have to see if the opamp is accessable on any of these.
I also have and AD-8 (Delay). |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 09/03/2009 : 06:47:41
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quote:
Originally posted by DasBeef
I'll have to have a look at my biyang collection.
I currently have the DS-7 (distortion), and the FZ-7 (fuzz) and I have a DS-8 (Mouse distortion) winging it's way to me in the post. I'll have to see if the opamp is accessable on any of these.
I also have and AD-8 (Delay).
DasBeef what do you think of the Biyang effects?
From my only example I think that they are great quality, build and sound wise. Made in China so the prices are low, but compare to Behringer, also low price, the Biyang pedals are way better. |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 09/03/2009 : 07:01:10
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A picture of the really nice feature of OD-8:
Download Attachment:  biyang.jpg
59.29 KB |
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nathanscribe
Silver Member
United Kingdom
376 Posts |
Posted - 09/03/2009 : 11:55:05
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Slightly OT, but I like the Biyang Tonefancier range. I've got the AD-7 delay, which is really nice, the OTD-100 Pro (genuine tube overdrive with an EHX tube run at full voltage) and a PH-8 phaser (seems to be 'inspired' by the MXR Phase 100, but I don't have one to compare). I've had the CH-7 chorus, and that was a lot like the Small Clone - a good analogue effect. I sold both the CH and Clone and kept my CE-2, but I'd certainly recommend the CH as an alternative. I don't know what they'd be like to gig though, I just use mine at home.
I think it's pretty interesting they've aimed directly at the mod crowd by opening up the opamp like that. I don't think I've seen that anywhere else. |
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Topic |
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Swapping op-amps
biyang.jpg