Will this output transformer fit my Amplified Nation chassis?

[surge98]

Hello,

First post here, I'm in the early stages of building the 50 watt 3rd Gen circuit using a PCB and layout from AA Electronics and a chassis from Amplified Nation. I know the chassis is punched to accommodate a number of different power and output transformers, but it's not clear to me if this Heyboer output transformer will fit without adding new holes. The dimensions listed are 2 1/16" x 3 1/2", but it doesn't say if that's the hole spacing or the overall transformer footprint dimensions.

The Heyboer part number is HTS-14092 and the Amp Parts Direct part number is APD-8009H. Can anyone confirm whether or not this part will be a drop-in fit without drilling additional holes? Or is there a better choice of output transformer available from Heyboer? This one has a primary impedance of 4.2k with 4/8/16 ohm taps, and is designed as a 50 watt replacement for Bassman and Super Reverb amps. I'm pretty sure it's what I need.

https://shop.amppartsdirect.com/collect ... 18009-copy

Thanks.

[amplifiednation]

Here's a screenshot...sorry I know there is a lot of dimensions to look at!

Screenshot 2026-09-10 214222.png

[Raoul Duke]

Surge98,
I’ve used APD8009H with Taylor’s chassis with no modifications needed; dropped right in with absolutely no problems.
Enjoy the build!

[surge98]

Thank you both, this is exactly what I was looking for.