I need an Owner's Manual for a Phase Linear PLA-234 car audio amplifier. Any idea where I can get one???

Wow you have a hard to find manual. i did a little research and found out that pioneer bought Phase Linear in 79. Recoton bought Phase Linear from Pioneer. I found a phone number to call and get a hold of a person to obtain a manual for your model
If you have Recoton product questions, please contact us at 1-800-732-6866
Monday through Friday
(8:30AM to 5:30PM EST)

i just cut and pasted the number for you. i hope this helps you out.

Hey,

try contacting the guys at this website, they got some of the phase linear manuals listed on their page, those are mainly old models though.
http://www.stereomanuals.com/man/rep/phase-linear/index.htm

Also as far as I know Phase linear was bought by pioneer electronics and later sold to recoton.
You might find something from pioneer but your best bet is to contact recoton.
http://www.recoton.com/

hopefully you will get that manual.

Let me know if you need anything else.
Thanks,
Ekse