Opamp Upgrades for Mixing Board

[Edu Silva]

WeAreAs1 at aol.com wrote:
> 
> Here are some that I'm considering:
> 
> OP275

Specs are good, but I don't like it's sound.

> TLO72  (the old standby..)

Cheap, but there are lots of better IC's today, at very good prices.

> NE5532  (very popular in the 80's... now??)

You'll need another power supply...

> TLE2072  (ti's "Excalibur" series)

Never listened do them.

> NJM4560  (used in all Mackie products)

My choice! Mouser sells them at $0.33, or even less, if you buy 100.
Very low noise and distortion. Sounds OK to my ears.

> I would consider buying more expensive parts, if they
> can show considerable sonic improvement (for instance, if even my girlfriend
> can hear the difference...)

Try the OPA2604 in one channel. Even your dog will hear the
difference...

> I'd also consider mixing types - for example,
> using one type for the mic pre section and another type for the EQ stages,
> etc.

I'd use the OPA2604 for the mic pre and the NJM4560 for the other
stages.

Edu