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2x TO99 to dip 8 adapters

post #1 of 28
2/22/10 at 4:08am
Thread Starter 
I've scoured the net and nothing Anyone know where I can pick one of those up? Otherwise I gotta but auzentech's overpriced opamps.
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post #2 of 28
2/22/10 at 5:10am
Uhm... why and why?
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post #3 of 28
2/22/10 at 5:31am
Thread Starter 
So i can mount 2 LME49710HA's in my dac?
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post #4 of 28
2/22/10 at 5:36am
I think you missed the point.

1) Why can't you simply stick the 8 leads from the TO99 package into a DIP8 socket?
2) Why would you use TO99 instead of DIP8 if your application has a DIP8 socket?

The question of TO99 vs DIP8 notwithstanding. This new information also begs to ask the question of why are you using 2x LME49710 instead of a single LME49720?
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post #5 of 28
2/22/10 at 7:01am
RealAudio

With shipping and all it'll probably be cheaper to buy a single LME49720 as FA suggests

/U.
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post #6 of 28
2/22/10 at 8:59am
Quote:
Originally Posted by FallenAngel View Post
2) Why would you use TO99 instead of DIP8 if your application has a DIP8 socket?

The question of TO99 vs DIP8 notwithstanding. This new information also begs to ask the question of why are you using 2x LME49710 instead of a single LME49720?
Two single op amps can sound better than a dual.
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post #7 of 28
2/22/10 at 9:07am
Yes, and several people (including a few NSC engineers) claim that the TO-99 packaged LME's sound better than the DIP-versions.

Still, I'd wager that the differences between different op-amps are far greater than the differences between different packing types of the same op-amp, so IMHO the question is still valid - is it worth the extra effort?


/U.
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post #8 of 28
2/22/10 at 9:28am
Dunno... depends on what "better sound" is worth to you. I've switched to using two singles for critical applications.

Another option is to carefully bend the legs to fit into a dual DIP adapter.
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post #9 of 28
2/22/10 at 9:29am
much better stereo separation and wider center channel for 2*singles over 1*dual IME.
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post #10 of 28
2/22/10 at 1:10pm
Thread Starter 
Thanks for all the replies,

Basically what Im trying to find is something that sounds like LT1364 with a better sound stage, I really liked the opa627's sound stage but its a bit dark for me and in some songs the vocals get lost in the base...

Leeperry, what do you think of the burson hdam?
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post #11 of 28
2/22/10 at 1:58pm
well, you want two LT1363 on a browndog basically...same sound, but much clearer SS, wider center channel and less colored/distorted.

even browndog say that their adapters offer the highest separation between the 2 channels...and it's dead obvious anyway, I would never use dual opamps ever again tbh...whatever as final buffer or DAC LPF(even for the two polarities of the same channel), dual opamps are completely worthless IME...I'm entirely willing to believe that 2*49710HA sound much better than 1*49720HA(which I found boring after a little while)...I basically see it as balanced/unbalanced.

Burson sounds good, hah

their v2 is basically an improved OPA-Earth, wider and more natural SS and much less distorted sound...I like them as much as I like AD797B or LT1028A, these are 3 excellent opamps IMHO.

I often prefer AD797B as DAC LPF, but LT1028A or the Burson v2 are a tough call...depending on the surrounding design, one might win...but why choosing when you can roll then every weeks for a change?

LT1028A is killer, but Burson gives a more colored "tubey" sound...but in a good way, like very thick bass, creamy mids, holographic SS and non shrill trebles

you can read about the 797/1028 here:
http://www.head-fi.org/forums/6402627-post77.html
http://www.head-fi.org/forums/f6/aud...-v-2-a-397691/

they all kill the 1363/1364 w/o the shadow of a doubt IMHO.
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post #12 of 28
2/22/10 at 2:52pm
Thread Starter 
Great, thanks for the reply! Well Im gonna try the dual LME49710, the LT1028 and LT1363. The 797 might not work in my dac so Im gonna steer clear of them. Can the bursons be mounted on sockets? Their website says no...
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post #13 of 28
2/22/10 at 4:04pm
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post #14 of 28
2/22/10 at 5:03pm
Quote:
Originally Posted by FallenAngel View Post
:deadhorse
hehe yes, even majkel has always said that two singles on an adapter were giving a much better stereo imaging...and many other ppl too like 12Bass, Andrea...and to me on my cd1k(same drivers as the cd3k) the diff is dead obvious, a clear night & day

Single-to-dual Op-Amp Adapter (p/n 020302)
Quote:
Superior electrical and thermal isolation between channels vs. integrated dual op-amp
if you can't hear a diff between 2*LT1363 Vs 1*LT1364, or 2*OPA211 Vs 1*OPA2211, or 2*OPA1611 Vs 1*OPA1612(and the list goes on)..I can't really tell why, but there appears to be something wrong on your end...maybe you'd need to try it on headphones w/ a HUGE SS?...I truly don't mean no disrespect.
Quote:
Originally Posted by muad View Post
Great, thanks for the reply! Well Im gonna try the dual LME49710, the LT1028 and LT1363. The 797 might not work in my dac so Im gonna steer clear of them. Can the bursons be mounted on sockets? Their website says no...
np! 1028 is pesky and only stable for <1 gain..yes, solder them w/ cardas solder on gold plated machined sockets and you're good to go.
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post #15 of 28
2/22/10 at 5:56pm
Quote:
Originally Posted by leeperry View Post
hehe yes, even majkel has always said that two singles on an adapter were giving a much better stereo imaging...and many other ppl too like 12Bass, Andrea...and to me on my cd1k(same drivers as the cd3k) the diff is dead obvious, a clear night & day

Single-to-dual Op-Amp Adapter (p/n 020302)

Quote:
Superior electrical and thermal isolation between channels vs. integrated dual op-amp
Probably better to quote some measurements from an opamp datasheet rather than marketing fluff from a company trying to sell adapters to audiophiles.
After comparing the measurements between single and dual packages then we could muse as to whether it's likely any human could hear a difference under normal operating conditions.
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