INA217 vs SSM2017 vs SSM 2019

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Hi. I'm going on a preamp mod rampage, and was wondering if anyone knew
if it made any sense to swap out the 2017s from an aphex 107 for either
of the alternatives? Thanks for the help!

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Just do it. Install a 8 pin machine socket and plug away. I found that
either the BB or 2019 parts are vastly improved over the 2017. I sort
of liked the 2019 over the 217, report back which you prefer.

Jim Williams
Audio Upgrades

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In article <1108691308.691306.211700@o13g2000cwo.googlegroups.com> amzavareei@hotmail.com writes:

> I don't know, I wasn't planning on getting both, you know and choosing
> one and wasting like 8 or ten dollars. I was hoping someone would know
> for sure.

We do, but it'll cost you 20 dollars for the information.

Of course nobody knows for sure. How do we know what you'll like?


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As far as putting a socket in there, that would raise the resistance a
bit in the circuit, no? Anyway I just got it yesterday, and it doesn't
even have a 2017! This is revision F, maybe a redesign after the 2017s
went out of production? It's got 2 each of KA324 405B, PMI SSM221OP
S9505 N32750 C, and K347 448 chips. Anyone know which one might be the
audio opamps, and if there are any upgrades for them? Thanks again for
the help!

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OK, I figured out a little more.

The SSM221 is a DIP-8 dual transistor array made by PMI. There's also a
version made by Analog Deviices.

KA324 is a DIP-14 quad opamp made by Samsung. Also has versions made by
Fairchild.

M35an LF a DIP-8 Wide Bandwidth Dual JFET Input opamp made by, I don't
know, it's got a logo of two parralel lightning bolts. I know fairchild
ST, NJR and national makes versions. And here's a page that talks of
some better versions, but I don't think they will work since the input
output types are different

The KF347 448 is a DIP 14 high speed quad JFET input opamp made by
samsung. Also has versions made by Fairchild.

Most of the caps are nichicon, but I don't know if they're the best low
resistance kinds, so I might replace these too.

Any advice on any upgrades would be much appreciated, thanks a bunch!

Archived from groups: rec.audio.pro (More info?)

In article <1108863786.216454.240430@f14g2000cwb.googlegroups.com> amzavareei@hotmail.com writes:

> As far as putting a socket in there, that would raise the resistance a
> bit in the circuit, no?

Yes.

Would it matter in this instance? No.

Why not?

You really don't need to know.

> Anyway I just got it yesterday, and it doesn't
> even have a 2017!

So you wanted to modify something you didn't even have? How silly! Why
do you think you want to modify this unit? I'll bet you haven't even
listened to it yet.


--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo