Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => The Newcomer's Forum => Topic started by: saturated on September 03, 2026, 11:39:05 AM

Title: Dual Operational Amplifier
Post by: saturated on September 03, 2026, 11:39:05 AM
An upcoming project is to construct a simple amplifier

Some older notes and post said I had some LM385 but I looked high and low through my stash and can't find em

Note to self: maybe indicate a quantity next time  :grr

Anyhow I did find a couple "dual" ones

IMG_20260902_214835009 (1).jpg

IMG_20260902_220117615 (1).jpg

Kinda intimidated by this wondering if this is for two channels like stereo or something and maybe I can just use one

 xP
Title: Re: Dual Operational Amplifier
Post by: J M Fahey on September 05, 2026, 04:06:48 AM
Where did you find THESE?

I used both A LOT back in the day, also single 741 and LF351, but that was in the early 80s.
Then TL072 became the Industry standard.
Notice 1975  1.68 USD price for ONE is officially about 11 bucks today and in real life about $20

Notice they were individually packaged.

In 1969 I bought just arrived LM741 single Op Amps each in its own cardboard box, as if it were a 12AX7 or something, go figure.

Current TL072 price is about 50 cents each. on a VERY devalued USD.

Title: Re: Dual Operational Amplifier
Post by: saturated on September 06, 2026, 07:17:33 PM
Yes sir thanks I have a big box of old radio shack stuff I don't think there is much of anything special but if you are looking for something in particular lmk I'll pack it up and get it headed south  :dbtu:

Also about a dozen large diodes  xP  xP