$400ea
60's guitar sound or fat, and bottom end for days, then these things are a secret weapon.
Awesome on drums!
Pre API 5250 op amp design.
Very Very RARE and don't come up often, well, they never come up.
They have 2 huge UTC Ouncer transformers and where THE recording preamp for RCA recording desks from 1960.
"The BA-31A replaced the legendary RCA BC-2B tube pre in the early 1960-61. For the most part these were in every major recording & broadcasting studio in America until the 1970's."
The pic is an example of how they could be racked up.
This is not the unit for sale.
Cheers
Phil
- It is currently Thu Jul 30, 2026 8:08 am • All times are UTC + 10 hours [ DST ]
FS RCA BA 31B Pre-amp modules PRICE DROP
Moderators: rick, Mark Bassett
5 posts
• Page 1 of 1
FS RCA BA 31B Pre-amp modules PRICE DROP
You do not have the required permissions to view the files attached to this post.
Last edited by Phil Snow on Mon Nov 24, 2014 3:01 pm, edited 4 times in total.
- Phil Snow
- Registered User

- Posts: 105
- Joined: Sun Mar 30, 2014 4:33 pm
Re: FS RCA BA 31 Pre-amp modules
Have some BA34's, would be keen to look at the 31's. Can you PM a price?
Alistair McLean
- Alistair
- Frequent Contributor

- Posts: 634
- Joined: Fri Jul 16, 2010 11:35 am
- Location: Melbourne
Re: FS RCA BA 31B Pre-amp modules
Hi Alistair
Now you've got me thinking.
They've been in storage for 2 years.
They maybe BA 34 B/C.
They have the metal tray.
There's one version had an integrated 110V PSU.
These do not have that.
I'll have to check
Cheers
Phil
Now you've got me thinking.
They've been in storage for 2 years.
They maybe BA 34 B/C.
They have the metal tray.
There's one version had an integrated 110V PSU.
These do not have that.
I'll have to check
Cheers
Phil
- Phil Snow
- Registered User

- Posts: 105
- Joined: Sun Mar 30, 2014 4:33 pm
Re: FS RCA BA 31B Pre-amp modules
The 34's are double the width of the 31's and have a power supply built in, so if they look anything like that image, they should be 31's!
Alistair McLean
- Alistair
- Frequent Contributor

- Posts: 634
- Joined: Fri Jul 16, 2010 11:35 am
- Location: Melbourne
5 posts
• Page 1 of 1
Return to For Sale / For Hire / Gear Wanted
Who is online
Users browsing this forum: No registered users and 11 guests