"Best" or "Your Fave" dual op amp ???

lucey · 24th February 2004

I need some better op amps. I have SIP ... but SOIC or DIP might work if i can find the little pin converters.

What dual op amps do you like and which do you not?

dale116dot7 · 25th February 2004

You gotta watch changing op-amps. Stability can get you in a bind. I had a commercial (Sony) MD player with a last-minute op-amp swap and it oscillated. I've done it to mixing boards and trying to find that op-amp that's oscillating at 6 MHz can be tough when the power rails all deliver the signal throughout the board and everything looks like it's oscillating. Ouch.

Anyways, I've liked the single op-amp LT1115 but it depends what for. It's quiet. I generally like the Linear Tech stuff but it's a bit expensive. The adapter board would need to be for two singles, though. They have duals but they don't perform as well as the singles. I've used the National LM833 and it's ok but its stability is marginal. Watch the capacitive loading on it.

-Dale

gyraf · 26th February 2004

LM833.

Works specially nice for eq's - maybe because of it's low openloop distortion.

Jim Williams · 27th February 2004

I like the National LM6172 as the best bipolar dual opamp. 3000 v/us slew rate, 90 db open loop gain at 10k hz, low noise, 100 mhz bandwidth, 100 ma output current, what's not to love?

BTW, they're a real bitch to stablize sometimes. Try some if you need to make a 10 mhz oscillator!

Jim Williams
Audio Upgrades

shikawkee · 27th February 2004

Does anybody know of a superior replacement for these Japenese op-amps: NJM4560's (which are SIP devices) ???

Any help would be greatly appreciated.

lucey · 27th February 2004

Quote:

Originally posted by shikawkee
Does anybody know of a superior replacement for these Japenese op-amps: NJM4560's (which are SIP devices) ???

Any help would be greatly appreciated.

NJM 4560L, 4v/us, 10MHz, 4.3mA typ

NJM 4580L, 5v/us, 15 MHz, 6mA typ., 0.00005% dist

anyone else ... there has to be a better SIP dual than these???

shikawkee · 28th February 2004

Quote:

Originally posted by lucey
NJM 4560L, 4v/us, 10MHz, 4.3mA typ

NJM 4580L, 5v/us, 15 MHz, 6mA typ., 0.00005% dist

anyone else ... there has to be a better SIP dual than these???

That's what I was thinking....

**Tim Farrant** · 3rd March 2004

There are plenty of devices in 8 pin DIP but the SIP package is a bit of a problem. Analog Devices and Burr Brown do not do the SIP style, so what you have already maybe the best option.

My favourite is the AD OP275 dual.

Tim.

shikawkee · 3rd March 2004

Thanks Tim.

lucey · 3rd March 2004

Quote:

Originally posted by The Buzz
There are plenty of devices in 8 pin DIP but the SIP package is a bit of a problem. Analog Devices and Burr Brown do not do the SIP style, so what you have already maybe the best option.

My favourite is the AD OP275 dual.

Tim.

Have you tried that against the Burr Brown OPA 404KP ? ... i found the latter better in my old console. better being subjective in this case

ulysses · 4th March 2004

Quote:

Originally posted by lucey
Have you tried that against the Burr Brown OPA 404KP ? ... i found the latter better in my old console. better being subjective in this case

I haven't tried the OPA404KP yet, but it does look good. It's a quad though, not a dual. Which could make it even more special for upgrades, since good quads are so hard to find.

lucey · 4th March 2004

Quote:

Originally posted by ulysses
I haven't tried the OPA404KP yet, but it does look good. It's a quad though, not a dual. Which could make it even more special for upgrades, since good quads are so hard to find.

sorry ... it is a quad .... yet we did A/B it with the Analog Devices equivalent.

good quads are hard to find

good quads are hard to find

you got lucky babe

when i found you

Bernd G · 4th March 2004

LIKE AD 249, BB 2604. Not so much the BB 2134.

The specs are not the end all to the sound. Better use your ears.

dcollins · 25th March 2004

MC34082

Trendy, huh?

DC

24th February 2004	#1
lucey Gear Guru Joined: Dec 2002 Location: Columbus, Ohio Posts: 12,407 Thread Starter	"Best" or "Your Fave" dual op amp ??? I need some better op amps. I have SIP ... but SOIC or DIP might work if i can find the little pin converters. What dual op amps do you like and which do you not? __________________ Brian Lucey Magic Garden Mastering Dr. John, The Shins, The Black Keys, OAR, David Lynch, Sami Yusuf, moe., Sigur Ros Spiral Groove Studio One - mixing monitors

27th February 2004	#4
Jim Williams Voiding warranties Joined: Feb 2004 Location: beautiful Carlsbad, CA Posts: 10,067	I like the National LM6172 as the best bipolar dual opamp. 3000 v/us slew rate, 90 db open loop gain at 10k hz, low noise, 100 mhz bandwidth, 100 ma output current, what's not to love? BTW, they're a real bitch to stablize sometimes. Try some if you need to make a 10 mhz oscillator! Jim Williams Audio Upgrades __________________ Jim Williams Audio Upgrades

27th February 2004	#5
shikawkee Lives for gear Joined: Oct 2003 Location: Nashville, TN Posts: 1,010	Does anybody know of a superior replacement for these Japenese op-amps: NJM4560's (which are SIP devices) ??? Any help would be greatly appreciated. __________________ "Lend me some sugar, I am your neighbor"- Andre 3000

3rd March 2004	#8
Tim Farrant Moderator Joined: Jun 2002 Location: New Zealand Posts: 2,410	There are plenty of devices in 8 pin DIP but the SIP package is a bit of a problem. Analog Devices and Burr Brown do not do the SIP style, so what you have already maybe the best option. My favourite is the AD OP275 dual. Tim. __________________ "Come on, make my day" Dirty Harry (Clint Eastwood) Visit Buzz Audio

4th March 2004	#13
Bernd G Gear addict Joined: Dec 2002 Location: NY Posts: 337	LIKE AD 249, BB 2604. Not so much the BB 2134. The specs are not the end all to the sound. Better use your ears. __________________ BG

25th February 2004	#2
dale116dot7 Lives for gear Joined: Dec 2003 Location: Calgary, Alberta Posts: 816	You gotta watch changing op-amps. Stability can get you in a bind. I had a commercial (Sony) MD player with a last-minute op-amp swap and it oscillated. I've done it to mixing boards and trying to find that op-amp that's oscillating at 6 MHz can be tough when the power rails all deliver the signal throughout the board and everything looks like it's oscillating. Ouch. Anyways, I've liked the single op-amp LT1115 but it depends what for. It's quiet. I generally like the Linear Tech stuff but it's a bit expensive. The adapter board would need to be for two singles, though. They have duals but they don't perform as well as the singles. I've used the National LM833 and it's ok but its stability is marginal. Watch the capacitive loading on it. -Dale

26th February 2004	#3
gyraf Lives for gear Joined: Jun 2002 Location: Denmark Posts: 667	LM833. Works specially nice for eq's - maybe because of it's low openloop distortion.

25th March 2004	#14
dcollins Lives for gear Joined: Aug 2003 Location: Hollywood CA Posts: 2,622	MC34082 Trendy, huh? DC

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